My testing with FlashBackup here has generally resulted in faster
volume restores than volume backups. This is dependent on many factors,
including the activity of the disk / raid group during backup / restore. Generally
speaking, my raid-5 arrays write data much faster than they read it. Assuming
your disk reads and writes at the same speed (unlikely) restores will take just
as long as backups, because you are writing out the bits in the same order you
backed them up. You may want to review the documentation on FlashBackup, as
restoring the entire volume is not the same as restoring “all the files.”
-Jonathan
From:
veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of WEAVER,
Simon (external)
Sent: Monday, October 10, 2011 2:55 PM
To: smpt; veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] FlashBacup - Restore Question
Hi Stefanos
Thanks .... but in a DR scenario... where you would have to restore
all the Data, would FlashBackup-Windows be quick?
Simon
From: smpt [mailto:smpt1 AT peppas DOT gr]
Sent: Monday, October 03, 2011 5:07 PM
To: WEAVER, Simon (external); veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] FlashBacup - Restore Question
Hello Simon.
I can answer you only to the first question.
Unfortunately the file restore of a single file can take as long
as a full restore, as netbackup has to read the backup to find the file. If the
file is in the beginning of the backup, then it is fast, else….
For the 3ed, you can always create multiple policies.
stefanos
From:
veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of WEAVER,
Simon (external)
Sent: Monday, October 03, 2011 5:35 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] FlashBacup - Restore Question
Hi,
I am evaluating FlashBackup-Windows. I am backing up a 1.8TB
Volume, with millions of 1kb files and via SAN, its taking 3 days.
During a quck FB-Windows Test Policy, I got this down to 7 hours.
However, 2 questions:-
1) Not been able to test, but is there a downside to restore times
for this type of volume
2) I read a Technote, that when restoring FB-Windows, certain files
dont get restored, like Outlook .pst files. Now, I cannot find the Technote,
but I wondered if that was fixed in 7.0.1
3) The Server has 5 volumes, but it does not look like you can
"stream" jobs. Does anyone have a policy where it contains multiple
volumes for a single client. And can you improve the performance? I could
Multiplex I guess.
Thanks
Regards
Simon