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2011 VMware Inc. All rights reserved
VMware vCenter Site Recovery Manager v5.1 Technical Presentation Scott Calvet Systems Engineer
Twitter: @Gr8VirtualScott
Blog: http://greatvirtualscott.com
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A little about me.
Customer for over 13 years
Industries Financial Software Support Publishing Insurance (Fortune 500)
Past Roles Help Desk Systems Admin Systems Engineer Systems Architect Regional IT Manager
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My Industry Certifications
XenApp, XenDesktop, XenServer
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vSphere Provides The Best Foundation For Disaster Recovery
Encapsulation: Simple Application Protection Entire system including application, OS, and data is stored
as virtual machine files
Entire system can be protected with data protection tools
Hardware-Independence: Flexible Infrastructure Eliminate need for identical hardware across sites Enable waterfalling of equipment to recovery site
Consolidation: Cost-Efficient Infrastructure Reduced hardware requirements at recovery site Use recovery hardware to run low-priority apps
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vCenter Site Recovery Manager Ensures Simple, Reliable DR
Provide cost-efficient replication of applications to failover site
Built-in vSphere Replication Broad support for storage-based replication
Simplify management of recovery and migration plans
Replace manual runbooks with centralized recovery plans
From weeks to minutes to set up new plan Automate failover and migration processes for reliable recovery
Enable frequent non-disruptive testing Ensure fast, automated failover Automate failback processes
Site Recovery Manager Complements vSphere to provide the simplest and most reliable disaster protection and site migration for all applications
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Key Components Of SRM 5
Storage
Servers
VMware vSphere
vCenter Server Site
Recovery Manager
Virtual Machines
Site Recovery Manager Manages recovery plans
Automates failovers and failbacks Tightly integrated with vCenter and replication
Storage-Based Replication (3rd party) Provided by replication vendor Integrated via replication adapters created,
certified and supported by replication vendor
vSphere Replication Part of vSphere platform
Replicates virtual machines between vSphere clusters
Choice of replication options
Required at both protected and recovery sites
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vSphere
SRM Architecture with vSphere Replication
Protected Site Recovery Site
SRM Plug-In SRM Plug-In
Storage
SRM Server SRM Server
Storage
(VR Appliance)
vSphere Client vSphere Client
vSphere
vRA vRA
VMFS VMFS
Storage VMFS VMFS
vCenter Server vCenter Server
vSphere
vRA
vSphere
NFC
vSphere
NFC
VR Appliance
VR Appliance
Replication
SRA SRA
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Storage Replication Adapters (SRAs): Discover arrays Determine which LUNs are replicated Assist in initiating tests, recovery Other SRA capabilities
Reprotect Synchronization Planned Migration
64 bit SRM 5.1 will require new SRAs
SRM Compatibility Matrix:http://www.vmware.com/pdf/srm_storage_partners.pdf
SRM Server
SRA
Vendor Management
Interface
Array Manager
Array Manager
Replication Manager
SRA
Vendor Management
Interface
Array Array Array
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Storage Array Integration
SRAs show detailed storage specific data in the SRM GUI
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vSphere Replication part of the platform
Virtual machines can be replicated
irrespective of underlying storage
type
Enables replication between
heterogeneous datastores
Replication is managed as a
property of a virtual machine
Efficient replication minimizes impact on VM workloads
SRM can use either the integrated software replication or storage based
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vSphere Replication UI
Select VMs to replicate from
within the vSphere client by right-click
options
Can configure for an individual VM, or
multiple VMs simultaneously!
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vSphere Replication Traffic
Deltas (TCP 44046) Normal mode of operation sends only changed blocks to the replica site Changed blocks accumulate in a redo log
Full Sync (TCP 31031) Read disks, exchange checksums Used to establish the initial state Also used for recovery from errors or if an unusual state is detected Ensures traffic isolation Ensures data synchronization checks do not impact replication
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Quiescent Applications with vSphere Replication
Integrates with VSS and application writers for consistent applications!
VSS writer integration
Improved since 1st VR with SRM
Works via VMware Tools
]
Create quiescent copies of virtual machines including apps!
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Architecture Storage Impact Protection Groups
Datastore Group 1
LUN 1
PG 1 - EMail
PG 2 - SQL
.vmdk files in
separate
datastores PG3 - SharePoint
LUN 4
LUN 5 VMFS D
Datastore Group 3
PG 1 EMail PG 2 SQL
PG3 SharePoint
Recovery Plan 2 (Entire Site)
Protected Site Recovery Site
Datastore VMFS A
LUN 2
LUN 3
Datastore Group 2
Datastore
VMFS B Datastore
VMFS C Datastore
PG 1 - EMail
Recovery Plan 1 (Email)
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Storage Impact Granular DR Testing and Failover
Recovery Plan 3 (Entire Site)
Recovery Plan 2 (SQL)
Recovery Plan 1 (EMail) Group VMs on disk by application, service, business unit, etc. - create a recovery plan for each group.
Test or fail over only what is necessary i.e. Not all or nothing
SRM provides granular testing of disaster recovery plans
Intelligent organization of your
storage will enable this!
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Workflows
Planned Migration
Allows for a data synchronization as part of the process
Will stop on errors and allow you to resolve them before continuing
DR Event Allows for a data synchronization as part of the process
Will not stop on errors
Test Recovery
Allows for a data synchronization as part of the process
Supports a recovery that uses a different network
Uses a clone or snapshot for the test
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Workflows continued
Reprotect Can be run following a successful recovery
Reverses the direction of replication, and protects virtual machines back to the original site.
This enables a failback to recover the environment back to the primary site.
Cleanup This is done following a test recovery
Removes the snapshot or clone created during the test
Powers off and deletes test VMs
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Use Cases
Recover from unexpected
site failure
Full or partial site failure
The most critical but least frequent use-case
Unexpected site failures do not happen often
When they do, fast recovery is critical to the business
Anticipate potential datacenter outages
For example: in case of planned hurricane, floods,
forced evacuation, etc.
Initiate preventive failover for smooth migration
Graceful shutdown of VMs at protected site
Leverage SRM planned migration capability to
ensure no data-loss
Most frequent SRM use case
Planned datacenter maintenance
Global load balancing
Ensure smooth site migrations
Test to minimize risk
Execute partial failovers Use SRM planned migration
to minimize data-loss
Automated Failback enables bi-directional migrations
Unplanned Failover Preventive Failover Planned Migration
3 typical
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Additional Use Cases Upgrade, Patch Testing
Storage Array Replication
Protected Site Recovery Site Test
Replication not impacted
Isolated Test
Network
Copy of production
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Risk With Infrequent DR Plan Testing
Parallel and cutover tests provide the best verification, but very resource intensive and time consuming.
Cutover tests are disruptive, may take days to complete and leaves the business at risk
Unproven Recoverability
Time DR Test DR Test
Changes to A
pplications &
Infrastructu
re Configur
ation
TESTING GAP
Recovery Risk
IT Environment without Virtualization & DR Automation
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Frequent DR Testing Reduces Risk
Increased confidence that the plan will work Recovery can be tested at anytime without impact to production
SRM provides frequent testing of recovery plans
Virtualization & DR Automation Greatly Reduce Recovery Risk
Recovery Risk
DR Test DR Test
Frequent DR Testing
Time
Virtualization + DR Automation
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Testing a Recovery Plan storage layer
Storage Array Replication
Protected Site Recovery Site
Replication not impacted Isolated
Test Network
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Testing a Recovery Plan
VMs are ready to be used now
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Planned Migration
Will shutdown protected VMs, and
than synchronize them!
Will stop on errors and