HPStorageGuy tweeted a very interesting reference to an article by Mike Moroze from HP LeftHand about tighter integration with VSS.
A new option in HP LeftHand P4000 iSCSI storage systems, which we use a lot at Nobel in Hyper-V R2 clusters, now fully embraces the Volume Shadowcopy Services framework.
Currently the preferred method for backup up fair quantities of Hyper-V virtual machines is using the VDS hardware provider of the SAN vendor. This would in turn trigger the storage regular hardware snapshot method. Being a 100% VSS solution, I expect DPM2010 to benefit a great deal from this new LeftHand option to off VSS for creating hardware based snapshots. It would alleviate the Hyper-V host to a great extent because IO Redirection can be kept very short for the CSV LUNs on which the VM’s reside which are being snapshotted.
Because there is no similar VMware integration (yet, if at all via VSS), the VSS option for LeftHand is not yet the default. It will be default for most of our customers (grin).
For a single snapshot:
For a schedule to snapshot a volume: