A couple of months ago I posted about backups not crossing mount points to get data and now I can shed a bit more information on the troubleshooting but I am still a bit stumped and would appreciate your advice.
We are migrating a bunch of our VM's over to a 3PAR 7400 which also includes VM's that have RDM's attached. Since the migration, what we have noticed is that the data inside the RDM does not get backed up by Netbackup when using Snapshots. The backup completes with a 0, so I always assume the data is sitting in my tapes or Datadomains...until I try to restore. As soon as I turn Snapshot off, and use Cross Mount Points, the data gets backed up with a problem, however it seems to run 2-3 times slower than a snapshot backup. SInce we are talking 10-15 Tb of data, I need a quicker solution.
I have talked with Symantec about this and they suggested just turning off the Snapshot, however my backups for 7 servers takes approximately 6 days to complete when I do that. Symantec's other suggestion is the 3PAR VSS writer, however that requires a license we don't have on the 3PAR.
I'm open to any suggestions as the one's i've received from my VAR when we set this up 3 years ago, appear to not be the greatest set of best practices.
Master : 7.6.0.1
Client: 7.6.0.1