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1© Copyright 2011 EMC Corporation. All rights reserved.
VMware Site Recovery Manager
SRM5 Update
Ed WalshvSpecialist E-mail: [email protected]: 518-928-0694Twitter: @vEddieW
2© Copyright 2011 EMC Corporation. All rights reserved.
What is Site Recovery Manager?Site Recovery Manager Complements vSphere:
simplest disaster protection with auto vCenter discovery and embedded array based replication management
enable frequent non-disruptive testing ensure fast, automated failover
Simplify management of recovery and migration plans
Replace manual runbooks with centralized recovery plans From weeks to minutes to set up new plan
SRM Momentum: Introduced in Q2’ 2008 125,000+ units sold 5,000+ customers 50% annual growth in 2010
Demo
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SRM High-Level Architecture
Storage
Servers
VMware vSphere
vCenter ServerSite
Recovery Manager
Storage
Servers
VMware vSphere
Virtual Machines
vCenter ServerSite
Recovery Manager
Virtual Machines
Storage Replication
Network
Production Site
Recovery Site
Fibre Channel, iSCSI, NFS
Server hardware can be different makes and
models
Windows and Linux VMs
Demo
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SRM5 EnhancementsTechnology
• vSphere Replication
Workflow• Planned
Migration/reprotect/failback
• DR event
User Interface• Completely new UI
Miscellaneous• IPV6• Miscellaneous • API – Protected Side• Dependencies• Resolved Issues
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Technology – vSphere Replication
• Virtual machines replicated without advanced array functionality
• Enables replication between heterogeneous datastores
• Replication is managed as a property of a virtual machine
• Efficient replication minimizes impact on VM workloads
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vSphere Replication Details
Replication Granularity per Virtual Machine• Can opt to replicate all or a subset of the VM’s disks• You can create the initial copy in any way you want -
even via sneaker net!• You have the option to place the replicated disks where
you want• Disks are replicated in group consistent manner
Simplified Replication Management• User selects destination location for target disks• User selects Recovery Point Objective (RPO)• User can supply initial copy to save on bandwidth
Replication Specifics• Changes on the source disks are tracked by ESX• Deltas are sent to the remote site• Does not use VMware snapshots
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Replication UI
Select VMs to replicate from vSphere client by right click optionsCan do this on one VM, or multiple VMs simultaneously
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vSphere Replication 1.0 Limitations Focus on virtual disks of powered-on VMs
• ISOs and floppy images are not replicated• Powered-off/suspended VMs not replicated• Non-critical files not replicated (e.g. logs, stats, swap,
dumps) vSR works at the virtual device layer
• Independent of disk format specifics• Independent of primary-side snapshots• VM is recovered with collapse snapshots• Physical RDMs are not supported
Storage DRS , FT, linked clones, VM templates not supported
Automated failback of vSR-protected VMs not supported yet
Virtual Hardware 7, or later, in the VM is required
Minimum RPO of 15 minutes
9 Confidential
SRM Architecture with vSphere Replication
“Protected” Site “Recovery” Site
vRMS vRMS
SRM Plug-In SRM Plug-In
Storage
SRM ServerSRM Server
Storage
vRS
vSphere Client vSphere Client
ESX ESX ESX
vRAvRAvRA
ESX ESX
VMFS VMFS
StorageVMFS VMFS
vCenter Server vCenter Server
10 Confidential
SRM Scalability
Maximum Enforced
Protected virtual machines total 1000 No
Protected virtual machines in a single protection group
500 No
Protection groups 250 No
Simultaneous running recovery plans 30 No
vSphere Replicated virtual machines 500 No
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Planned Migrations For App Consistency & No Data Loss
Overview
Benefits
Two workflows can be applied to recovery plans: DR failover Planned migration
Planned migration ensures application consistency and no data-loss during migration Graceful shutdown of production VMs in
application consistent state Data sync to complete replication of VMs Recover fully replicated VMs
Better support for planned migrations
No loss of data during migration process
Recover ‘application-consistent’ VMs at recovery site
Planned Migration
Site BSite A
Replication
1 Shut down production VMs
2 Sync data, stop replication and present LUNs to vSphere
3 Recover app-consistent VMs
vSphere vSphere
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Will shutdown protected VM’s, and
then synchronize
them!
Planned MigrationNew is Planned Migration.
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Simplify failback process Automate replication management Eliminate need to set up new recovery
plan
Streamline frequent bi-directional migrations
Automated Failback To Streamline Bi-Directional Migrations
Re-protect VMs from Site B to Site A Reverse replication Apply reverse resource mapping
Automate failover from Site B to Site A Reverse original recovery plan
Restrictions Does not apply if Site A has undergone
major changes / been rebuilt Not available with vSphere Replication
Overview
Benefits
Automated Failback
Site BSite A
Reverse Replication
Reverse original recovery plan
vSphere vSphere
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ReprotectAfter you use planned migration (or DR Event) to migrate to your recovery site, you must reprotect to enable the failback.
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FailbackDescription Benefits
• Facilitates DR operations for enterprises that are mandated to perform a true failover as part of DR testing
• Simplifies recovery process after disaster
• “Single button” to failback all recovered VMs
• Interfaces with storage to automatically reverse replication
• Replays existing recovery plans – so new virtual machines are not part of failback
Reverse Replication
Site A (Primary) Site B (Recovery)
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FailbackTo failback, you need first to do a migration (DR or Planned), followed by a reprotect. To do an actual failback, the recovery plan is now run againThe recovery plan will now failback the VMs to the original site.
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Failback (continued)Reprotect is now almost complete . . .
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User Interface EnhancementsThanks to some great UI researchers, designers, and some wonderful customers!
Both sides visible without Linked
Mode!
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User Interface (continued)
New icons for shadow VMs
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MiscellaneousIPv6
• SRM will support IPv6 for all network links• vSphere Replication will support
communication over IPv6 if underlying ESXi servers support IPv6
IP Customization performance increaseIn guest callouts:
• Since 1.0 you can execute a script that was held on the SRM server, now you can do it inside the guest
• Great for application customization
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Miscellaneous – In Guest Callouts/Scripts
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APIExisting API on recovery site preservedNew API on both protected and recovery sidesProtected Site API set includes:
List replicated datastores / protection groups / resources / VM
Query the status of protection for a VM or VMs Protect or unprotect one or more VM Status of protection group
Recovery Side API includes: Recovery Plan info Start / cancel, list / answer prompts Get XML representation of historical run of plan Get basic result information of a plan (name, start,
stop, etc.)
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DependenciesFunctionality to help manage multitier applications
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Dependencies (continued)
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Group 5Group 4Group 3Group 2Group 1
Dependencies (continued) – VM Startup Order
DatabaseApache
Desktop
Desktop
Desktop
Desktop
Apache
Apache
Mail SyncExchange
App Server
Master Database
App Server
Database
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SRM5 – New & Improved! New user interface Planned migration – with replication update Failback vSphere Replication Faster IP customization Shadow VM icons In guest scripts VM dependency
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