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
