Site Recovery Manager functions#
When running a recovery plan in test mode, a snapshot of all VMs associated
to the recovery plan is created and the VM is booted off that snapshot.
SRM imports the VMs and configures the networks based on the network mappings
and recovery plan settings. SRM powers on the VMs based on the configured boot
priority. After every recovery plan run in test mode, you must run a
Running the cleanup immediately powers off the recovered VMs and discards all changed data from the test.
In planned migration mode, SRM halts the recovery plan action if any of the steps fail. SRM attempts data replication to ensure the most recent data is available. SRM issues a shutdown command to all protected VMS in the recovery plan.
If any VMs are appliances or do not have VMware Tools, special care needs to be made.
Follow the steps in VM boot priority to configure the shutdown action for the VM. If this was a previously-run recovery where VMs at the current source site were configured to be suspended as part of the recovery, SRM attempts to resume those VMs. SRM attempts to power on or restore any ESXi hosts at both sites that might have been powered off by DPM (not supported). SRM reconfigures the protection group to prepare for migration to the target site. SRM initiates one more storage replication to ensure the target-side VMs are in a mirrored state. This insures the guest OS virtual disks are in a clean state from a graceful shutdown. SRM suspends any non-critical VMs that are preconfigured to be suspended during a recovery operation. SRM reconfigures the target-side storage as writeable. SRM imports and powers on the VMs based on their preconfigured boot priority.
When a recovery plan is run in disaster recovery mode, SRM follows the exact
steps as outlined above, but expects failure. After the source site is back
online, the recovery plan must be run again. SRM steps through any failed steps
and attempts to complete them successfully. You must rerun the recovery plan
until all steps have completed successfully. Once the recovery plan is successfully
Recovered, you MUST proceed to run a
You can only run a
Reprotect after a
Recover has been successfully completed. In
order to reconfigure the protection group and recovery plan to facilitate
failback, you MUST run a
Reprotect. SRM attempts to power on any ESXi hosts
that have been powered off by DPM (not supported at Rackspace), and resume any
suspended non-critical VMs. SRM reconfigures replication in the reverse
direction. SRM reconfigures the protection group in the reverse direction.
This is where the configuration of reverse mappings is required. See
Configuring Site Recovery Manager.
IP customization rules going back the other direction are also applied at this point. SRM begins replication and synchronize the storage.