Primary/Remote Volume & Failover - Clarification?

[Paul Hutchings]

Can I just confirm that my understanding from the manuals is correct please?

If I'm replicating from Site A to Site B using Remote Snapshots:

• The volume at Site A is Primary 
• The volume at Site B is Remote
• Any volumes assigned to servers at Site B cannot be accessed/mounted so long as the volume is a Remote volume.

In the event that Site A fails/disappears:

• The volume at Site B is changed to Primary (manually or scripted)
• Any servers assigned to this volume can now do an iSCSI rescan and mount/access the volume

When Site A is back:

• Change the volume at Site A to remote or create a new remote volume
• Do a remote snapshot from Site B to Site A to copy the volume back
• Change the volume at Site B to remote, and change Site A back to Primary.

Is that a reasonable understanding?  I know there are failover/failback wizards in the CMC but I want to be sure my understanding of things is correct first.

Thanks,

Paul