An Overview of Cloud Offering

Aswath Rao

Agenda

• Background

• Cloud Types

• Market Trend

• OpenStack

• Network Services

Background

Traditional Data Centers

• Capital intensive

• Require long lead times

• Difficult to scale up/down capacity– Especially scaling down

• No opportunity to share resources between organizations of a single company

What is a Cloud

• Cloud is a collection of virtualized computing and storage resources

• Applications that can in real time scale up/down these virtual resources that they will need

• Business relationship between Cloud providers and consumers that allow for real time scaling

Cloud Types

• Infrastructure (IaaS): Raw comute and storage resources. Eg. Amazon Web Services

• Platform (Paas): Provides some incremental functions like Persistence management, scaling and the like. Eg. Heroku, Google App Engine

• Software (SaaS): Specializes on a specific user application like CRM eg. Salesforce

Cloud Architectures

• Private: Usually operated by a single commercial entity with individual departments acting as users

• Public: Operated by a 3rd party where individuals, business units or enterprises are users, usually under a multitenancy arrangement

• Hybrid: Usually a Private cloud that can use a Public cloud to handle temporary excess demand, temporary fault and the like

Cloud Benefits

• Advantages– High availability– Instant up/down scaling– Pay per sip

• Downside– Privacy and Compliance regulations

• Operator challenges– Capital intensive– High volume– Commodity business

Market Trend

• Worldwide Telcos are entering the market– Verizon/Terremark– AT&T Synaptic– Tata Communications– Airtel

• Market Size– Currently $20B– $45-50B by 2013 (25% CAGR)– Telcos growing from $1B to $9B

Customers’ Pain Point

• Prefer supplier diversity– Provider– Geographical

• But interfaces are custom and proprietary

• Iffy portability across providers

• Require access to Network services

OpenStack

• Open source effort spearheaded by– Rackspace and NASA– More than 80 participating companies– L&T Infotech is the sole(?) India based company– OpenStack Foundation is being formed

• Three services are defined– Nova for compute– Swift for storage– Glance for management and tracking

• Early deployments have been announced– Rackspace– Ubuntu

Quantum for Network Services

• Recently added to OpenStack• Focused on Network connectivity• Building block for sophisticated cloud

network services• Abstracted view with actual NW

implementation is hidden• API extensions for complex functionalities

like QoS• Active participation by Cisco

Evolution of Quantum: A Personal View

• Application will require certain Network characteristics– VPN, Layer 2 parameters– QoS, delay characteristics– Universal or end-point specific

• Application will use Quantum to specify the parameters

• Cloud provider will facilitate– Locally– End-to-end with the cooperation of other providers– Verizon Wireless Turbo Boost as an example