[Veritas-bu] Enterprise Vault backup - increase throughput ....
Cameron.Kennedy at bovislendlease.com
Wed Jul 11 13:45:13 CDT 2007
OK, seems we have come to a solution that I thought I would share.
According to our Messaging admin, there are several EV partitions that
he has "closed", which is to say will no longer be accepting new writes
and only reads. So I am effectvley backing up the same unchanged data
over and over.
Thus, I have been able to exclude about 5 partitions from that server
and simply bpexpdate the tapes with the last full backup of those
partitions for 7 years (our retention). This means I am backing up only
changing partitions, hence smaller amounts of data and henceshould bring
our backup window to within a 20hr period.
From: WEAVER, Simon (external) [mailto:simon.weaver at astrium.eads.net]
Sent: Wednesday, July 11, 2007 2:07 AM
To: Kennedy, Cameron; veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Enterprise Vault backup - increase throughput
I am in a similar boat, and although the backups go on for a while, I am
going to implement a SAN Media Server to help with this.
As a rule I turn off any AV, disk i/O software on this box during the
backup and ensure tracker.exe is not tunning.
HTH a bit....
3rd Line Technical Support
Windows Domain Administrator
EADS Astrium Limited, B23AA IM (DCS)
Anchorage Road, Portsmouth, PO3 5PU
Email: Simon.Weaver at Astrium.eads.net
<mailto:Simon.Weaver at Astrium.eads.net>
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Kennedy,
Sent: Tuesday, July 10, 2007 1:27 PM
To: veritas-bu at mailman.eng.auburn.edu
Subject: [Veritas-bu] Enterprise Vault backup - increase
Anyone have some experiences to share about getting maximum
throughput from their EV backups?
We have Netbackup 5.3mp4 running on AIX with 1 AIX media server,
We have Enterprise Vault (Windows 2003 NTFS) with a GB backup
I am struggling to get greater than 2500KB/sec backup speed from
our vault stores partition.
I know that the greatest issue is that this partition has many
tiny files and that this adds overhead in backing up them up.
Example: We have right now 606GB consisting of ~983000 files on
this partition alone.
I get a throughput of ~2500KB/s according to the Netbackup
console but I would say it is a little lower based on my math.
I have turned off VSP caching, which did help by ~1500KB/s.
We have turned on the EV collector which should go about
collecting the small files into larger CAB files, however, I am still
seeing long delays in the time it takes for backups.
During testing, I have found that I can kick off a new stream
and backup another partition on the same server and get a throughput of
10,000KB/s which leads me to believe it is not a network related setup
Is there anything else that someone has done to increase
throughput, or can anyone share what type of performance they are
I am considering a flashcopy scenario of the SAN disk associated
with this server which won't fix the issue, but atleast move it from the
production server to an offline situation.
I am also considering, doing a raw partition backup (haven't
used this method before but read about it in the admin guide), knowing
that only a restore of the entire partition would be an option in a DR
thanks for any advice.
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