HP Storage Mirroring Software - Manual (Page 331)

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10. Review the protection options, then click Finish to initiate the protection process.
After you click Finish, Storage Mirroring Console creates the job. The Monitor
Connections page will appear.
Next step: Monitor your protection job
Reusing virtual hard disks
Virtual hard disks (VHDs) created by a virtual recovery protection job can be re-used.
This can be useful for pre-staging data on the target over a LAN connection, and then
moving your target Hyper-V server to your remote disaster recovery site after the initial
synchronization. When you re-use an existing VHD file, Storage Mirroring Console
performs a difference mirror instead of a full mirror.
To reuse a VHD:
1. Create a protection job over the LAN connection.
2. Allow the job to complete the initial synchronization.
3. Delete the protection job. When prompted, choose the option to Keep and register
the replica virtual machine.
4. From the Hyper-V manager, delete the replica virtual machine. Doing this will
delete the virtual machine configuration but will keep the associated VHD files.
5. Shut down and move the Hyper-V target server to your remote disaster recovery
site.
6. After the target server is online, create a new protection job for the same source
server used in the original job.