The Evolution of Private Clouds

8/3/2019 The Evolution of Private Clouds

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Co-Presented by:

The Evolution of the PrivateCloud

By George Gilbert


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Evolution of the Private Clouds - 2 - 2010 Giga Omni Media | May 2010

Table of Contents

Table of Contents 2INTRODUCTION 4Roadmap to the Private Cloud 5

Hardware 5Software 6

The Battle for the Private Cloud 7Economic Benefits 8DEFINITIONS 9FROM DEDICATED TO SHARED INFRASTRUCTURE 12The Evolution of Enterprise Management Software 14Extending Virtualization to Storage and Networks 16THE EMERGENCE OF PRIVATE CLOUDS 17Enabling Self-Service 18Extending Private Clouds with Public-Cloud Resources 20

Software Appliances 21Distributing Software Appliances 22

From Application-Aware Management . . . 23. . . to Management-Aware Applications 25

Prepared for George Gilbert ([email protected]


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VENDOR IMPLICATIONS 27An Important Role for the Big Four 27

Integrating infrastructure layers 28Integrating intergenerational products 28Tying together multiple applications in an end-to-end service 29

VMware vs. Microsoft 30The Battle for the Data Center Operating System 32The Battle to Manage Packaged Applications 34

The Wild Card: Oracle 36CUSTOMER IMPLICATIONS 37ABOUT TECHALPHA 40ABOUT GIGAOM PRO 40



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Introduction

Every 15 years or so, the IT world undergoes a tectonic shift. Technological forces

collide and grind against one another, creating an upheaval that leaves the landscape

irrevocably changed. The latest such shift is currently underway: the transition to

computing as a service, also known as cloud computing. This change promises to make

computing more like a utility such as electricity or telephony users plug in and get

the resources they need without much manual effort on the part of service providers.

Cloud computing has brought these benefits to Internet titans like Google,

Salesforce.com and Amazon, and to their customers. Traditional enterprise IT has long

aspired to the same advantages, but with a crucial distinction. Businesses want the

option of greater control over governance, security and management that comes with

using their own infrastructure.

For the better part of the last decade, cloud computing within the enterprise appeared

elusive, short of totally replacing the hardware and software infrastructure to resemble

large public web sites. Then came server virtualization, pioneered by VMware in the

early part of the decade. At first, virtualizations ability to tie disparate servers into a

unified pool was used only for software development and testing. But gradually, it has

become apparent that the technology was mature enough to deploy more widely.

Suddenly, private clouds began to appear realistic.

This report is neither a comprehensive recipe for building a private cloud nor a

complete review of all the products and vendors involved. Rather, it is a roadmap

outlining the technologys likely evolution, starting with the bottom layer in Figure 1.

Readers familiar with cloud computing concepts at the infrastructure level will find theparts of the report that review lower layers of the IT stack somewhat remedial. They

are there to set the context for the more forward-looking sections that describe how

higher-level layers are likely to evolve.



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Figure 1: IT is built in layers, each of which is evolving as cloud computing matures.

Virtualization

MgtHardware

ISV App

Operating Systems

Application ServersOracle Weblogic, Windows, IBM

Websphere, Tomcat, also SQL DBMS

Application FrameworksJEE, .NET, LAMP, Spring

Custom

AppSAP

Manager

Of

ManagersTypically HP,

BMC, IBM, CA

MoM

S

ecurity

Mgt

Mgt

Mgt

Mgt

Mgt

Source: TechAlpha

Roadmap to the Private Cloud

Although server virtualization works with existing infrastructure, new products

tailored specifically for virtual environments can make it even more powerful. These

products include both hardware and software.

Hardware

On the hardware side, Cisco and HP are pioneering a new class of integrated hardwarethat offers three novel capabilities:

Each chassis contains a mix of all infrastructure components with built-in

management software that allows administrators to manage a single unit rather

than individual servers, storage and networking gear.



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Because virtual machines (VMs), not servers, are the fundamental element of

management, the infrastructure is VM-aware. It can reconfigure itself to follow

VMs around the resource pool, something that was never necessary with

physical servers.

The hardware is configurable on demand. This allows applications to operate as

though they were running on dedicated infrastructure tuned to their individual

service level requirements.

Software

Ultimately, though, the special sauce for cloud computing in the enterprise will be

management software. Application and infrastructure administrators will be able to

agree on an applications required service level and then let the software configure and

operate itself with minimal intervention.

This evolution is likely to occur in several distinct steps. Today, for the most part,

systems management software has only limited control over applications running in

VMs. Administrators setting up applications to meet their service levels can only tune

the underlying infrastructure. But VMs are evolving to carry around the deployment

and operational requirements of the applications they contain, and management

software is evolving to read them. Once that change is complete, management software

will need to be able to look inside the VM, take the pulse of the application itself and

respond appropriately. At that point, the management software can be said to be

application-aware.

Ultimately, applications must be able to understand, and to some extent control, their

own operational needs. That way, they could communicate interactively with

management systems to meet their service level objectives. Such applications can be

said to be management-aware. For this to happen, both ISVs such as IBM, Microsoft,



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Oracle and SAP and custom application developers using frameworks like JEE, LAMP,

.NET and Spring will need to build manageability into their applications.

With these capabilities in place, IT would be able to operate on a self-service model.

Administrators, developers and application owners would have access to resources and

applications on demand. Hardware infrastructure teams would define how developers

or application administrators could use their resources; developers would define how

application administrators could use solutions delivered on their platforms; and

application administrators would define how end-users could use their applications.

This would bring IT closer to the point where developers, infrastructure

administrators and application administrators could agree on each applications

necessary quality of service (QoS), and then set it and forget it.

The Battle for the Private Cloud

Two vendors, VMware and Microsoft, are actively working toward implementing these

software changes. Each is following a distinct strategy in what is shaping up to be a

David-and-Goliath battle to own the technology at the heart of the private cloud.

VMware is trying to make the traditional server OS irrelevant by redefining the layers

of the IT stack and sandwiching the OS between the virtualization layer and the

application platform. (It acquired SpringSource last August for this purpose.) This

would let VMware put a cut-down Linux OS kernel between the virtualized hardware

and the applications, making Windows irrelevant as a server OS.

Meanwhile, Microsoft aims to keep the virtualization and application layers firmly

fused to Windows. It brings significant advantages to this effort especially a decade-

long head start in application-aware systems management through its Systems Center

technology and .NET application framework.



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But there is a dark horse in the race. Oracle is attempting to control the entire IT stack,

squeezing total cost of operations to a bare minimum. A single-vendor approach all the

way down from application to chips and spinning disk drives will allow the

company to make favorable trade-offs not open to other vendors.

Economic Benefits

The prospect of private clouds comes along at an opportune moment. In the first great

era of computing, roughly from the 1960s through the 1980s, enterprises relied on

mainframes for all their computing needs. This changed dramatically as a second era

dawned in the 1990s, when ever-increasing numbers of individual servers took over

tasks once performed by highly integrated mainframes. Initially, this change brought

tremendous savings in capital expenses, as businesses no longer needed to invest in

big iron, but instead could buy much more cost-effective small servers, dedicating

them to individual applications. However, as the numbers of servers grew, the task of

managing the landscape of dedicated but heterogeneous infrastructure became an

overwhelming expense. Figure 2 illustrates how overwhelming the cost of

infrastructure maintenance has become relative to investment in new applications.

Figure 2: Infrastructure maintenance cost crowds out other investments, particularly inapplications.

Source: VMware



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Private clouds promise to liberate businesses from this upward cost spiral. In its

ultimate implementation, a private cloud would deliver the efficiency of cloud

computing combined with the control and security of internal infrastructure. Users

would gain access to infrastructure, platforms or complete applications simply by

plugging into IT. The armies of administrators once necessary to manage numerous

distributed silos of specialized hardware and software would be replaced by automated

processes running on a single pool of resources. Applications and infrastructure would

largely run themselves, fulfilling most computing needs with the "lights out.

Streamlining infrastructure operations and management costs would boost ITs ability

to build, buy, and absorb new applications. The vision of private cloud computing

would become a very productive, cost-effective reality.

Definitions

The term cloud computing has come to encompass much of the new activity in the IT

industry, giving it different meanings depending on context. Borrowing heavily from

the definition supplied by the National Institute of Standards, this report defines cloud

computing as having several distinguishing characteristics, three service models, and

two deployment models.

Distinguishing characteristics:

Resource pooling allows compute, storage and network infrastructure to be

shared and dynamically assigned among users and their applications.

On-demand self-service allows a consumer, whether an IT administrator,

developer, or application user, to provision services without requiring

interaction with the provider.

Elasticity allows services to be rapidly provisioned and scaled up or down as

needed.

http://csrc.nist.gov/groups/SNS/cloud-computing/index.htmlhttp://csrc.nist.gov/groups/SNS/cloud-computing/index.html


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Metering measures increments of time and capacity, allowing both service

providers and consumers to balance cost and QoS.

Service models:

Infrastructure as a Service (IaaS) provides IT administrators and

developers with self-service access to shared pools of compute,

storage and networking resources. The consumer, whether an

administrator or developer, can deploy any software, such as operating systems

and applications. Consumers can control the software they deploy but they

dont manage the underlying infrastructure.

Platform as a Service (PaaS) provides a programming platform and

tools for developers, who can build and deploy applications without

having to worry about managing the infrastructure. Quoting an

excellent definition by Billy Marshall, founder of rPath, PaaS allows

application developers to build applications in the cloud without ever having to

worry about hardware acquisition and configuration, software installation,

configuration, maintenance, scalability, backups, and so on. They just sign up

and start building, deploy with the push of a button, and pay for their usage as

they go.

Software as a Service (SaaS) gives consumers access to applications.

Consumers may have some ability to configure applications to fit their

requirements, but they dont control the operation of the application or bear

the associated IT overhead. Most SaaS vendors run a single, shared instance,

which is also called multi-tenancy. However, vendors can opt to manage and

deliver one instance per customer, as Oracle does with its On Demand

applications. In this case, the vendor must take care to ensure that the cost to

serve each customer remains competitive.

Deployment Models:

Private cloud is a term thats often used interchangeably with IaaS. However,

its worthwhile to draw a distinction. IaaS refers to the hardware infrastructure.



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A private cloud extends IaaS with software that manages performance,

availability and security via automated provisioning, deployment and

management. A private cloud is operated for the use of a single organization,

but it is not limited to the physical boundaries of an enterprises data center.

Rather, it operates within the security boundaries of a single enterprise,

allowing workloads to both move and grow on demand (Figure 3).

Public cloud refers to the same arrangement when its owned by a service

provider and available to the broader public.

Figure 3: A private cloud runs on infrastructure enclosed within a firewall or VPN, not

necessarily within the physical boundaries of an enterprise.

Source: TechAlpha



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From Dedicated to Shared Infrastructure

Although existing applications are designed to work on either shared or dedicated

infrastructure, traditionally they have run on dedicated infrastructure. IT managers

freeze-dry each application vertically on top of its own infrastructure; i.e., they install it

on a specific set of specially configured servers, making sure they have the right data

and storage connectivity and often devoting dedicated network storage even though

the storage unit was designed to be shared.

The reason comes down to management. Freeze-drying offers the best way to ensure

that applications live up to guaranteed QoS levels. The trade-off is that dedicatedinfrastructure is extremely labor-intensive to maintain. This is because the many

application silos become many management silos (Figure 4). Moreover, dedicated

infrastructure often becomes highly fragmented as many different vendors products

congeal into the supporting infrastructure.

Figure 4: Dedicating infrastructure to each application helps to guarantee quality of servicebut results in a fragmented landscape that is very costly to manage.

Source: TechAlpha



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Shared infrastructure clearly streamlines management and reduces fragmentation,

and server virtualization has gone a long way toward hosting and isolating software on

what appears, to the software, to be dedicated and specially configured CPUs and

memory. VMware is working closely with partners such as Cisco, EMC and NetApp to

extend this functionality to storage and connectivity. As that work progresses, the

shared pool of infrastructure beneath virtualization software will continue to grow.

The transition will accelerate as the hardware infrastructure itself becomes more

homogeneous, more easily configurable and more aware of VMs.

Until that process is further along, however, many business and mission-critical

applications will remain on fragmented infrastructure in legacy silos, with traditional

management focused individually on servers, storage and networks, as shown below.

Figure 5: Pools of virtual infrastructure will grow, but some infrastructure will continue to bededicated to legacy applications.

Source: TechAlpha



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The Evolution of Enterprise Management Software

Managing enterprise systems has always been a challenge. The sheer complexity of the

task dealing with endless variation of product categories, vendors within categories,

current and legacy versions of installed products, specific configurations, and

roadblocks thrown up by vendorswho dontwant their products to disappear behind

someone elses management console has made management software the IT

equivalent of the La Brea Tar Pit. Vendors roaming that space become trapped and

sink into the morass of legacy implementations.

Moreover, management software has tended to be as fragmented as the hardware itcontrols. IT administrators in large enterprises have generally organized themselves

into tribes that attended to individual parts of the landscape such as servers, storage,

networks, security, and databases and applications. Consequently, they tend to buy

management software dedicated to their specialty. It takes a heavy mix of professional

services to patch everything together and many administrators to keep it running.

Figure 6: Managing servers, storage, networks, security, and applications separately

fragments infrastructure further, adding to complexity and maintenance costs.

Network

Apps

Storage

Servers

Legacy Silos

Source: TechAlpha



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Cisco and HP are tackling the problem by building servers, storage and networks that

work together as a single unit. This makes managing infrastructure much easier.

However, it does not obviate the need for systems management. Rather, it implies that

the role of management will become broader.

A critical management issue for cloud computing has been that shared infrastructure

makes it difficult to trace a software problem to a specific piece of hardware. This issue

has held back deployment of IaaS for mission-critical applications. Better

virtualization management tools from VMware, Microsoft and Citrix havent yet fixed

the problem entirely. An Oracle database management system installed on a VM can

still thinkits running on hardware that supports the QoS it requires when, in fact, its

running on systems that arent configured to support that QoS level.

Some of the newest systems address this issue by making it possible to reconfigure the

hardware underlying the VMs on demand. As a result, application owners can have

greater assurance that virtualized applications are running on hardware that appears

configured and dedicated just for them. Loudcloud, renamed Opsware and later

bought by HP, actually had this ability 9 years ago. The profile for running a given

application could trigger provisioning and configuration changes across servers,

databases, load balancers, firewalls and storage. However, it stopped short of

addressing the bare metal.

When Cisco introduced its Unified Computing System (UCS), it included this

capability via a technology called Service Profiles. As part of a deepening alliance with

Cisco, EMC introduced IONIX Unified Infrastructure Manager (UIM). IONIX

manages Vblocks, which integrate Ciscos UCS with EMCs storage arrays. The first

release of IONIX UIM managed only UCS, but it will be able to configure and manage

EMC storage as well sometime in mid 2010.

Ciscos UCS Manager configures all the minute details of the hardware infrastructure

one layer beneath the hypervisor (see Figure 7). UCS Manager permits an

administrator or an automated policy to change an extraordinarily broad array of



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settings including the identity, I/O configuration, MAC addresses for LAN

connectivity, WWNs for SAN connectivity, firmware versions, BIOS boot order, and

network attributes such as QoS settings, access control lists, pin groups and threshold

policies. This lets infrastructure administrators show application administrators

exactly the same settings as if the setup were freeze-dried the traditional way. Just as

important, they can do it very rapidly. The integrated hardware that was developed in

response to server virtualization now can help the virtualization layer extend more

effectively to storage and networks.

Figure 7: The management console in Ciscos UCS Managerpermits an administrator orautomated policy to adjust all the parameters normally associated with an applicationrunning on freeze-dried infrastructure. Each unique collection of settings can represent adistinct Service Profile to be applied to a pool of infrastructure on demand.

Source: Cisco

Extending Virtualization to Storage and Networks

Layering a hypervisor on a pool of infrastructure configured with a specific Service

Profile on Ciscos UCS, or doing the equivalent on HPs BladeSystem Matrix, doesnt

fully deliver all the benefits of dedicated infrastructure. Server virtualization

technology doesnt do as good ajob with networking and storage as it does with CPUs

and memory. For example, a hypervisor cantyet reserve and isolate bandwidth on a

LAN for multiple data and management traffic streams or for storage traffic on a SAN.

UCS has this capability. It can carry data, clustering, management, VM migration and

SAN traffic, and isolate and manage them separately without having to install separate

network cards and cables. As other vendors add this capability, it will be much easier



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for VMware and Microsoft to make various implementations look identical to software

running on their systems. VMware has said that this functionality is on its roadmap.

Having a single vendor build the servers, storage and networks as part of a single

system isnt the only way to build the foundation for IaaS, but it can greatly simplify

matters. Infrastructure thats designed as a single system takes less work to operate

seamlessly. On that foundation, virtualization vendors can provide the fluidity that

enables IaaS and guarantees the QoS. And administrators no longer need to tend to

isolated islands of infrastructure supporting each application. Instead, they can control

the entire system from a single management interface.

With an infrastructure that has the integration of a mainframe but the malleability of

software, customers can build the foundation for a series of huge operational

improvements.Now that the infrastructure is easily configurable, it opens up the

opportunity for IT infrastructure administrators to set policies in the systems

management software for how the infrastructure can be used. Then they can hand the

reins to application developers and application administrators, who can agree on the

required performance, availability and security for each application; dial-in those

settings; and let the system run.

This is the theory, at least. A great deal of development remains to be done before it

becomes practical. The magic will be in management software designed specifically for

private clouds; that is, IaaS deployments with an additional management layer.

VMware has been talking about the software mainframe since the introduction of

vSphere last summer. Microsoft has been talking more broadly about dynamic IT for a

decade. Both these initiatives anticipate a full realization of the private cloud.

The Emergence of Private Clouds

It used to take a fair amount of iteration and even guesswork to deliver just the right

amount of infrastructure to support an application. To borrow a phrase from EMCs



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VP of marketing, Chuck Hollis, admins used tohave a hunch, provision a bunch.As a

result, most applications were greatly over-provisioned.

Private clouds offer the potential to automate provisioning, making for much more

efficient resource allocation. They also offer the potential to automate operations.

Today private clouds offer modest automation. In provisioning, this amounts to the

beginnings of self-service. In operations, its the ability to take corrective action when

something goes wrong, mostly by adjusting the infrastructure, but increasingly by

addressing applications. In the future, management software will ask the applications

what they need and parcel out the necessary resources according to the required

service level, and the applications will reconfigure themselves in response.

Infrastructure and applications will work hand-in-hand with management to deliver

the right service levels.

Enabling Self-Service

A key goal for private clouds is to enable IT to set up a self-service catalog, a

standardized list of available infrastructure, platform, and application services. (Figure

7 illustrates a mockup of a service catalog portal.) Admins, developers and application

owners would select from the list the services they want to use. For example, an

administrator would define the QoS characteristics of a mission-critical application

and the management software would configure the infrastructure to deliver it. The

service level might allocate servers, storage and networking for 100 percent uptime

using high-availability clustering, tier-one storage for highest throughput and

resilience, mirroring to a remote site for disaster recovery and a maximum 300

millisecond response time for end users.

An application owner could choose a service level for, say, an SAP application that

included metering to measure the cost of delivering a particular QoS for departmental

chargeback. With the SAP application deployed, the application owner and IT manager

could fine-tune the management policy for performance, availability and security

http://chucksblog.emc.com/chucks_blog/2009/12/the-private-cloud-vce-presentation.htmlhttp://chucksblog.emc.com/chucks_blog/2009/12/the-private-cloud-vce-presentation.htmlhttp://chucksblog.emc.com/chucks_blog/2009/12/the-private-cloud-vce-presentation.htmlhttp://chucksblog.emc.com/chucks_blog/2009/12/the-private-cloud-vce-presentation.htmlhttp://chucksblog.emc.com/chucks_blog/2009/12/the-private-cloud-vce-presentation.htmlhttp://chucksblog.emc.com/chucks_blog/2009/12/the-private-cloud-vce-presentation.html


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relative to the cost of the resources required. From that point, the automated policy

engine would adjust the infrastructure allocation dynamically to maintain the agreed

QoS.

This sort of operation would be a major step forward from todays islands of

automation. However, administrators would lack visibility into and direct control over

the applications themselves. The management software wouldnt be able to

communicate directly and automatically with the applications. The management

software would still be mostly constrained to managing applications by measuring and

metering their use of infrastructure and relying on administrator intervention for fine-

tuning.

Figure 8: Mock-up of a portal that delivers a self-service catalog of IT services.

Source: VMware

Vendors are getting closer to delivering this capability. In the coming year, private

cloud management software from VMware and others will let administrators define

the service level requirements of some applications.



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Extending Private Clouds with Public-CloudResources

The services listed in a self-service catalog could come from anywhere internal

resources or an external provider. Once a private cloud incorporates external

resources, two issues become critical, namely cost transparency and governance.

Cost transparency is an issue whenever shared infrastructure is institutionalized. With

dedicated infrastructure, its easy to account for the cost to support any given

application; with shared infrastructure, resource allocations are inherently ambiguous.

But the need for cost transparency becomes especially acute when part of the shared

infrastructure is housed externally. Some line-of-business managers wonder why the

estimated storage costs internally are 10 times the figure at Amazon. The IT managers

who serve them increasingly worry that internal IT must compete on price with public-

cloud service providers. Many are beginning to wonder how they will compete against

the scale and process discipline of a service provider with tens or even hundreds of

thousands of servers.

ITs advantage is its knowledge of business requirements. Yes, CIOs will have to adjusttheir tools and processes so they can provide full transparency for cost relative to QoS

just like any service provider. But one of their critical contributions will be governance.

They know best which workloads to support internally and which can migrate to a

public cloud.

Applications that are not mission-critical are prime targets to migrate, at least in part,

to external infrastructure. Mission-critical applications, especially those that need the

greatest resilience or require the finest degree of management control, such as Oracleor SAP, will be bound to their dedicated infrastructure for the foreseeable future.

(There are exceptions for instance, the service provider T-Systems maintains

500,000 SAP users running on virtualized infrastructure but such operations are

not for the faint of heart.) Unless these applications are upgraded to make them more



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manageable on newer, shared infrastructure, they may become this generations

mainframe equivalents: They may never move.

Similarly, sensitive data tends to be stored internally, where access can be tightly

controlled. An HR program that stores social security numbers may be kept in-house

despite having less critical management requirements. Merely authenticating users

and systems and authorizing access to data isnt enough when a private cloud extends

to public infrastructure. Typically, in public clouds, the customer can create some level

of isolation. But thats not the same as having complete physical control of the data,

where its placed, and even how its erased in one location when moved to another.

For the time being, CIOs are justified in lacking confidence that shared infrastructure,

especially in public clouds, is as secure or resilient as dedicated, internal

infrastructure. But private-cloud security will mature. As service providers improve

their security processes, physically isolating sensitive data and giving enterprises

greater physical control over it, CIOs are likely to feel more comfortable managing data

externally. Emerging management standards eventually will make it easier to balance

cost and control.

Software Appliances

Software appliances start to address such issues by incorporating governance,

management requirements and cost instructions within a virtual container. The term

software appliance refers to a standardized software container in the form of a file that

contains the entire bag of bits to be deployed, including the operating system,

application, middleware and all the information required to recreate the VMs running

in concert for a given application. The current standard, Open Virtualization Format

(OVF), is backed by VMware, Citrix and Microsoft, among others.

OVF contains information that makes VMs portable across different vendors virtual-

machine implementations. It would be more useful if it were to include service-level



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requirements for deployment, security and operations. Deployment information might

include how to set up Web, application and database servers and how they

communicate; what type of network topology the application needs; and what storage

resources are needed, both locally and remotely. Security information might include

what VLANs are needed and where the firewalls should be. Operational information

might include a detailed format for describing how the infrastructure should grab and

release resources to maintain the applications QoS relative to the budgeted cost.

VMware is trying to extend OVF in this direction with its own standard, called vApp.

Distributing Software Appliances

With all that information about management requirements standardized and attached,

it would be easier to move software appliances from internal to external infrastructure

and between one cloud and another. Standards are evolving to facilitate these tasks as

well. VMwares vCloud API goes a long way toward standardizing how to move a

software appliancebetween internal and external infrastructure.

However, an API alone wont be enough to make the process seamless. There are non -

obvious strings that tie down virtual appliances to their original data centers. First,

management technology must catch up with the web services architecture that enables

customers to choose which services to manage internally and which to federate

externally. Todays technology can map out the application topology and show

dependencies and response times, but it cant yet manage everything as a single end-

to-end service. Traditional management technologyisnt yet able to monitor and

enforce QoS across the organizational boundary. For example, even if a service

provider were able to assure the performance of a workload delivered in a software

appliance, the workload may still require connectivity to internal facilities such as

mainframes and on-site customer information systems. Todays management

technology isnt good at making sure the two sides can communicate reliably and

securely.



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Ultimately, the solution is to rewrite applications to understand how to run on

distributed infrastructure. There are two possibilities. They could be partitioned so the

more portable components could be sent to external service providers for capacity on

demand. Alternatively, certain components could be designed to run permanently in

external clouds. Regardless, legacy applications that are too long in the tooth to rewrite

will probably continue to be tethered to internal data centers.

From Application-Aware Management . . .

Today, management tools can look at the QoS information tied to a software appliance

and tune the infrastructure to make the associated application run at the required

service levels. But the management software cant look inside the application, make a

determination of what has gone wrong, and then fine-tune it to run better. The next

step is to extend automated management control to applications.

Symantec has traditionally distinguished itself with backup, availability and disaster

recovery software featuring agents that control not just infrastructure but applications

as well. However, these agents have only limited control. If an SAP application server

fails but the underlying software remains in operation, a Symantec management

application can see the failure and restart SAP on the same or a different system. HP

and BMC have more advanced management tools that can see deeply into SAP

environments. They can see where bottlenecks are forming and thresholds are being

reached, but they, too, have only a limited repertoire of responses. No current

management product has enough knowledge of the context be trusted to adjust

application health and performance parameters automatically.



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Figure 9: Application-aware management systems would have visibility into and automated

control over the health and performance of applications themselves, not just the supportinginfrastructure.

Custom App

Application Platform

Management

Virtualized Infrastructure

Oracle

Administrator

Source: TechAlpha

A fully application-aware management system, by contrast, would know right out of

the box about the performance of all application components. It wouldnt need custom

agents that work only with the most popular applications. It would be aware of all the

distinct services in a Microsoft Exchange 2007 deployment including the mailbox,

client access, hub transport, unified messaging, edge transport and Blackberryconnectivity. It would know that end-to-end email service was slowing down because

the mailbox server couldnt keep up with the client access, hub transport and

Blackberry services feeding it. The management software would either hot-add

resources to the mailbox server or fire up a new one and let the other services know it s



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there, all without administrator intervention. This level of automation requires more

sophisticated applications.

. . . to Management-Aware Applications

Despite help from application-aware management, both packaged applications and

custom applications built on private clouds would still require some involvement from

administrators to manage their deployment, capacity, performance and security.

Private clouds will make it easier for administrators to deploy and dial-in the right

QoS, but maintaining an applications operation still wont be completely automatic.

Only when applications are designed from the ground up to interact with their

environment will mainstream IT achieve productivity comparable to that of large

public-cloud services such as Amazon, eBay and Google. First, deployment and

operations teams must be able to make all but the most strategic management policies

accessible to developers in a standardized format. While that day may seem far off,

thought leaders at Microsoft, T-Systems and VMware are already assessing the

requirements.

In such an environment, any application whether SAP, a next-generation SaaS

application built by a startup, or a corporate application built on a PaaS service such as

Microsoft Azure would need to be able to monitor itself and communicate its needs

to the outside world. It would need to be able to predict its resource requirements and

communicate them to an external management system, which would provision the

appropriate resources based on the priority of its service level agreement and confirm

what it has provisioned with the application. The application, in turn, would be able to

adjust to the new conditions.



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Figure 10: A management-aware application would be aware of its own health andperformance. It would interact with a management system to get the resources necessary tomeet its required service level.

Custom App


Management

Virtualized Infrastructure

Oracle

Administrator

Source: TechAlpha

This sort of interaction between applications and infrastructure implies some degree of

standardization. For instance, an application might need to report its existing and

required number of threads or work processes, physical or virtual memory

requirements, and some standard way of measuring and accelerating critical

transactions. The external management system likely would remain the repository for

the policy engine that tells the infrastructure what resources to provide to maintain the

applications QoS. The key change is that the application itself would be the primary

control and management node, while the external management system existed to serve

it, not run it.



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Vendor Implications

The evolution of private clouds implies the technical milestones described above. But

how theyre defined, who controls them, and the resulting industry structure are open

issues. Each vendor is using its market strengths to tilt the playing field in its direction.

The dominant providers of system management services, CA, BMC, HP and IBM, may

not seem well positioned for an emerging environment in which traditional technology

will become obsolete. However, these vendors have unique strengths that translate

handily into the era of hybrid virtual/physical and internal/external infrastructure.

Meanwhile, VMware and Microsoft will have the biggest impact on the evolution of

private clouds. They are the vendors best positioned to influence how manageability is

built into software and how it is integrated into hardware infrastructure. Oracle is

trying to sidestep the market battles at all levels by selling a complete integrated

solution.

An Important Role for the Big FourUpon a cursory look, it appears that private clouds would diminish opportunities for

the Big Four incumbent management vendors. After all, homogeneous internal

infrastructure is easier to manage. Entirely new technology is required to manage

workloads that have been delegated to external service providers. However, no other

existing candidates can play the role described by BMCs CTO, Kia Behnia, as a single

point of aggregation and control.

The Big Four have taken the initiative in bridging physical and virtual infrastructure.

But they also have skills and experience to offer in three crucial areas:



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Integrating infrastructure layers

These vendors have lots of experience tying together distinct infrastructure layers to

form a vertically integrated stack. The operating system, database, middleware and

other components might come from different vendors and have their own

management capabilities built-in. Theres a need for software that manages the whole

collection. If a component fails, for instance, this software can restart the relevant

piece or the whole stack.

Integrating intergenerational products

When the entire stack of software comes from one vendor and one generation, that

vendors management software clearly has the advantage. But stacks from different

vendors and generations often grow up next to each other and require broader end-to-

end management. Today, no one does a better job of bridging these gaps than the Big

Four. For example, Computer Associates and BMC are expert at bridging mainframe

and server-based applications and infrastructure. HPs Business Availability Center

excels at integrating the management of Web-based applications and earlier-

generation systems.

The technology that would manage QoS dynamically fits right into this scheme: Its a

composite of traditional tools that control physical infrastructure, tools from server

virtualization vendors and an emerging generation of tools from the traditional

vendors that control the emerging integrated infrastructure. The first inklings of the

power of this new regime are starting to appear. BMC and HP have made strategic

acquisitions, BladeLogic and Opsware respectively, that accelerate their ability to

manage hybrid environments that include both physical and virtual infrastructure. The

resulting products address labor-intensive and error-prone IT tasks of server

provisioning, configuration and compliance. They ensure that servers receive the right

software, get patched and updated properly, and remain within guidelines for security,

regulatory and operational policies.



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Figure 11: The emerging virtual infrastructure stack will need to be integrated with previous-generation stacks into a single management framework a specialty of the Big Four.

Virtualization

MgtServers, Storage, Networks

ISV App

Operating Systems

Application ServersOracle Weblogic, Windows, IBM

Websphere, Tomcat, also SQL DBMS

Application FrameworksJEE, .NET, LAMP, Spring

CustomApp

SAP

MoM

Security

Mgt

Mgt

Mgt

Mgt

Mgt

Operating System,

Virtualization

MgtMainframe

ISV App

Application ServerCustomer Information Control System

(CICS), DB2

Custom Sales Order App

MoM

Security

Mgt

Mgt

Manager of Managers: single point of aggregation and control

Mgt

Source: TechAlpha

Tying together multiple applications in an end-to-end service

For instance, HP has extended its expertise to helping customers source, integrate and

manage systems no matter where those systems originated; they could be a

combination of packaged legacy systems, in-house development and SaaS

applications. The technical objective is to manage end-to-end services with one all-encompassing SLA that flowsto the constituent applications. An enterprise should be

able to create a B2B commerce site comprising, say, a custom Websphere application,

an SAP sales and distribution application, and an SaaS component that would let a

multi-tier supply chain collaborate on replenishment plans that runs on Amazon.



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Figure 12: Private cloud management systems will need to control end-to-end services thatmight include components running at external service providers.

Legacy Silos

Network

Apps

Storage

Servers

Virtualized InfrastructureService Provider

ServiceProvide

rmanagement

Privatecloudmanagement

End-to-End Service Management

Source: TechAlpha

The Big Four wont develop the ability to manage an end-to-end service across

organizational boundaries overnight. Its not yet possible for a management system to

provide visibility into and control over QoS for each component and meter everything

all the way out to those running at Amazon or another service provider.And its not

clear how long it will take for internal management systems to extend their reach fully

to the public cloud. Until they do, there will be a need for internal infrastructure

VMware vs. Microsoft

Despite critical contributions from hardware infrastructure vendors and incumbent

management vendors, VMware and Microsoft are driving the biggest parts of the



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upheaval. They are defining the software layer that works most directly with the

hardware. They are also driving the technology for management-aware applications.

To understand their strategies and handicap their odds, it helps to understand where

they are applying leverage and how strong that leverage is (Figure X). Windows runs

on about 75 percent of servers. Forty percent run packaged applications from SAP and

Oracle at the high end, down to ubiquitous applications such as M icrosofts Exchange,

SQL Server and Sharepoint and IBMs Lotus Domino. Another 40 percent serve

custom applications built by developers using frameworks such as .NET, LAMP, JEE

and SpringSource. Among this group, the market can be further divided between the

development frameworks used to build applications and the application servers used

to run them. Enterprise developers are split fairly evenly between .NET-based

frameworks (which run only on Windows) and Java-based frameworks. Within the

Java market, developers are split between SpringSource, which VMware bought last

summer, and JEE, owned by Oracle. The last 20 percent of servers run IT

infrastructure tasks such as file sharing. These rough figures indicate where each

companys assets will prove most valuable.

Figure 13: Server deployments by percentage. (20 percent is devoted to IT infrastructure

services such as directories and file sharing.)

Source: TechAlpha

VMware and Microsoft would probably find little to differ over in the layers called outin Figure 1. However, what each layer does, how the layers work together, how they are

priced, and how the vendors take them to market are likely to differ substantially.

http://pro.gigaom.com/2009/08/what-vmwares-springsource-acquisition-means-for-microsoft/http://pro.gigaom.com/2009/08/what-vmwares-springsource-acquisition-means-for-microsoft/http://pro.gigaom.com/2009/08/what-vmwares-springsource-acquisition-means-for-microsoft/http://pro.gigaom.com/2009/08/what-vmwares-springsource-acquisition-means-for-microsoft/


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The Battle for the Data Center Operating System

While VMware uses the phrase data center operating system, it has a very different

vision of the operating system from Microsoft. VMware wants to make the operating

system a vestigial appendage of a bygone era. It aims to reduce the OS to a simple

appliance tucked between the application and management layers.

Figure 14: By integrating a virtual infrastructure management layer and an applicationmanagement layer, VMware could make the traditional operating system irrelevant.

vSphere Virtualization

Servers, Storage, Networks

ISV App

Application PlatformTomcat now: force.com, Weblogic,

Websphere, SQL DBMS, etc., future

Application FrameworksJEE, .NET, LAMP, Spring, vmforce.com

Custom AppMicrosoft

Hyper-V Virtualization

Servers, Storage, Networks

ISV App

Windows Server OS /


Custom App

Application Frameworks.NET

VMware

Source: TechAlpha

A traditional operating system has two responsibilities, both of which VMware is

positioning itself to take on. First, it abstracts the hardware so all resource elements

look alike. To the software running on a data center OS as VMware defines it,

individual storage elements would melt into a uniform resource pool, leaving VMware

in control of the new generation of shared hardware infrastructure.



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This development would wipe out a large part of the value of Windows. Microsoft has

gone to Herculean effort and expense corralling hardware vendors to write and test

device drivers; this is a key part of the network effect that propelled its platform to

dominance. Where Windows traditionally has managed all the hardware by itself,

VMware is horning in on the territory. Thus, as Microsoft scrambles to catch up in

virtualization, its in the rare position of being behind in the hardware domain. And for

all the talk of tension between VMware and EMC, the storage company gave VMware

access to its multibillion-dollar test lab to make sure VMwares hypervisor could sit on

top of any vendors hardware a tremendous hidden asset.

The second responsibility of an operating system is to provide common services to

applications such as resource scheduling, memory management or file storage. But the

boundary between operating system and applications is evolving, and VMware is

attempting to accelerate the movement of corporate and ISV developers away from

traditional operating systems and towards application frameworks. Just about all

custom and many ISV applications today are built in JEE, .NET, LAMP, Ruby on Rails

or Spring. These frameworks make it easy to build applications that talk to databases

and have rich user interfaces. The next step is to make it easy to build applications that

monitor their own health and performance, availability and security levels and

communicate resource needs to the management system.

This was the motivation behind the VMwares acquisition of SpringSource. Nobody is

under the impression that all applications in the future will be built on the Spring

framework or deployed on the Tomcat application server. But now that VMware has all

the pieces, it can figure out how to put together a solution that lets any application

framework integrate deeply with the private-cloud management layer. At that point,

both corporate and ISV developers will be able to build management-aware

applications.

VMware just took another major step forward with its platform strategy to offer a

migration path beyond private clouds by teaming with Salesforce.com to create a joint

PaaS offering. The new product, vmforce.com, will combine the mainstream, popular



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Spring framework with all the application services and data already in the Force.com

PaaS offering. In other words, Java developers can deploy Spring-based applications

and take advantage of the built-in manageability, application functionality and

customer-related data that previously required Force.coms proprietary developer

tools. VMware's vCloud management services will be a key part of making applications

portable between vmforce.com, customers own premises and other service providers,

as long as the applications dont exploit features specific to any PaaS offering.

Where is Windows in all this? It doesnt matter. VMware can embed a tiny version of

Linux between the application frameworks runtime server and the hardware

management layer to provide the bare minimum of traditional OS services.

Today, Microsoft uses its overwhelming server OS market share to extract premium

pricing for the virtualization-enabled Windows Data Center Edition and an additional

premium for the Systems Center management platform. Virtualization is priced as a

feature. VMware, by contrast, wont require Windows. Thus it would be able to offer a

competitive price for its runtime platform, which will support all application

frameworks, plus its management layer.

The problem for VMware is that this strategy works best for custom applications,

which account for only 40 percent of servers. It needs to overcome Microsoft s

overwhelming advantage with the 40 percent of servers that run packaged

applications, dominated byMicrosofts SQL Server, Exchange, SharePoint, Office

Communication Server and others. Apparently, VMware has a strategy in place to do

so.

The Battle to Manage Packaged Applications

As long as Microsofts server applications dominate, it will be very difficult for VMware

to redefine the platform for packaged applications. VMwares best chance to seize that

ground may be where it appears weakest today: serving small to mid-size customers.



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Although this segment is ill-defined, it probably tops out with customers that have less

than 50 servers. These customers ability to absorb private cloud management

functionality is badly lagging VMwares ability to deliver it. Microsofts functionality,

still mostly focused on server consolidation, appears good enough. But as VMware

points out, Microsoft became dominant in servers when it overthrew Novell by offering

superior versions of the two highest-volume server applications: email and file and

printer sharing. It looks like VMware is planning to do the same thing, offering these

applications through its more than 1,500 service providers via SaaS.

On the email side, VMwares likely strategy is to deliver Exchange server functionality

through service providers. Many observers were perplexed when VMware bought

Zimbra, but theres no mystery. Zimbra is a substitute for Exchange, not figuratively

but literally. Companies can migrate their servers while end users continue to run

Outlook. Small IT shops can offload mail to someone else. Zimbras purported

attraction for service providers is that its designed for low-cost, cloud-scale operation.

VMwares strategy for file sharing is more speculative at this point. The company may

combine desktop virtualization delivered as a service with a new approach to file

sharing. This, too, could be managed by service providers. The best clue is that

VMware CEO Paul Maritz spent five years leading a startup called PI (pronounced

pie, but short for personal information) that attempted to redefine how users

access, store, organize and share information. Press reports at the time suggested that

it would be a more modern and sophisticated version of Sharepoint. In 2008, he sold

PI to EMC, which has continued to develop the software in stealth mode.

VMwares increasingly aggressive push into desktop virtualization might be related.

Desktop virtualization is about enabling a users environment to follow him from

machine to machine rather than being tied to, say, a single laptop. PI is part of an

effort to make a users environment more task- and information-centric, rather than

the current application-centric approach typified by Microsoft Office.



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VMwares best hope may be that desktop virtualization and new ways of sharing

information can break apart the two core elements of Microsofts business model.

First, Offices tight and ever-expanding horizontal integration has enabled Redmond

to maintain its pricing despite selling hundreds of millions of units over 20 years. An

information- or task-centric computing experience could rupture the need for

traditional application integration. Second, every time a PC gets replaced, part of what

customers pay for is a new copy of Windows. Desktop and application virtualization

make it possible to keep using of the same copy of Windows as the environment

follows the user from machine to machine, breaking the Windows royalty pipeline.

Microsoft is in the process of loosening licensing restrictions for some of these

scenarios under customer pressure.

The Wild Card: Oracle

Microsoft and VMware are fighting to define the next-generation data center operating

system by developing the layers where theyre strongest and emphasizing the value

that would come from adopting their roadmap. Oracle is taking an entirely different

approach. It wants to redefine the scope of vertical integration. By building the deepest

integrated stack and best-of-breed management tools to bind it together, it hopes to go

further toward reducing total cost of operations and enabling "lights out" operation.

The cost of operating Oracles traditional applications is high.Analysts estimate Oracle

systems cost more than $1,000 per user per month including hardware depreciation,

implementation and operations. (To be fair, SAPs price is similar.) Bringing down that

cost will likely require many of the same technologies VMware and Microsoft are

trying to develop. But a single-vendor approach all the way down from the application

to the chips and spinning disk drives does allow Oracle to make favorable trade-offs

not open to other vendors. For instance, Oracles Exadata database machine is

optimized for Oracle database performance in a way no other server, storage or

database appliance can match. Only Oracle can break up the core of the database

engine to achieve new performance levels. For example, it has essentially transplanted



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parts of its database engine to the equivalent of the storage controller, so those parts

are much closer to where the data is physically stored on disk. This minimizes the need

to move data over the storage network, speeding up performance by orders of

magnitude.

Its worth noting that Oracle also plans to compete aggressively in the same software

layers as VMware and Microsoft. In collaboration with Sun, it controls the JEE

application framework, which has been adrift relative to Spring and .NET. And with

BEA, it controls one of the two leading production servers for Java applications (the

other being IBMs Websphere). And the Java applications it runs include those based

on Spring.

Technically, Oracles destination looks very similar to where VMware and Microsoft

are headed. However, Oracle is attempting to absorb most of the major surrounding

markets as well. It also appears to have ambitions for management software well

beyond its own virtualization platform. It lured Richard Sarwal back after his stint as

head of development VMware when VMware appeared to pivot away from trying to

replace the Big Fours management software. Such software is critical to Oracles go-

to-market strategy for its Fusion applications. It aims to deliver the applications from

its data centers via SaaS with management provided remotely by Oracle on the

customers premises, or under customers control on their premises, or a combination.

Customer Implications

The cloud computing market is still very young, but its not too early to handicap how

customer purchases and deployments are likely to unfold. In general, despite

widespread deployment of VMwares and Microsofts virtualization layers,

unified infrastructure vendors such as Cisco/EMC (Vblocks) and HP

(BladeSystem Matrix) are likely to find their first successes with large,

sophisticated shops that are building or buying applications designed



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around private cloud management and need growing pools of unified

infrastructure to support them.IT departments at large enterprises generally have the administrative scale to manage

infrastructure and applications from multiple vendors. Theyre likely to retain a

conventional architecture around established applications, adopting the new

integrated infrastructure only as they build out for new applications. Small to medium-

size businesses are rarely early adopters, but their greater cost sensitivity and lack of

specialized admins make them great prospects for this new infrastructure. As larger

customers become comfortable with unified infrastructure, smaller operations are

likely to embrace it for the portion of their infrastructure they dont outsource to

service providers.

Service providers are beginning to provide cloud services both public and private,

moving beyond traditional hosting and managed services. These operations, too, fall

into categories. The largest of them operate infrastructure that is highly tuned for

delivering standardized services such as Amazons virtual servers and storage and

Microsofts MSN and Hotmail services. They also recognize the value of standardizing

parts of their infrastructure. The new integrated infrastructure suits these operations

because it will more easily accommodate their custom management software. If they

buy it, theyll buy enormous quantities delivered in shipping-container size

increments.

More specialized service providers such as T-Systems and Sunguard typically require a

more heterogeneous hardware. In T-Systems case, that includes managing billing for

Deutsche-Telekom and on-demand SAP systems for other customers; Sunguard serves

as a failover site for disaster recovery. These providers operate highly specialized

infrastructure, which will tend to bias them against the new integrated designs. They

do need to standardize management across their organizations, but their standards are

idiosyncratic and dont necessarily bear any relationship to the standards evolving to

support private clouds.



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As for the private cloud management layer, the Big Four are destined to play a bigger

role managing end-to-end services for enterprises than in the small-to-medium size

segment or among service providers. But for application-aware private clouds and

future management-aware applications, VMware and Microsoft have the most control

over the key leverage points that integrate how the application and hardware layers

communicate. Microsofts dominance among small-to-medium size businesses gives it

a major advantage among customers of that size. VMware, meanwhile, has

confounded skeptics by maintaining its dominant position in the enterprise.

Finally, the growing share of customers that define themselves as Oracle shops will

resemble the IBM shops of the 1960s through the 1980s. Their IT landscape will be

vertically integrated across Oracle technology and other vendors will play at the

periphery. The only question is what share of all customers Oracle will claim.



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About TechAlpha

TechAlpha is a management consulting and research firm that advises clients in the

technology, media and telecommunications industries across the following functional

disciplines:

Corporate finance and strategy, corporate development

Business unit and product strategy

Technology evaluation

Product management

Marketing

Sales and sales operations

Business development

Information technology

Visit http://techalpha.com

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Documents

The Evolution of Private Clouds