Did you restart the netbackup daemons/services
after making the change?
Do you still have the copy mounted?
If so it may also be worth running a test
using only 1 LTO-4 drive and see if the performance increases.
From:
hemant.kalekar AT wipro DOT com [mailto:hemant.kalekar AT wipro DOT com]
Sent: 11 May 2010 06:10
To: Shekel Tal;
veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Slow
backup speed
Had done the same but
still the issue persists
Thanks
and Regards
Hemant
S Kalekar
09819949422
From:
Shekel Tal [mailto:Tal.Shekel AT uk.fujitsu DOT com]
Sent: Monday, May 10, 2010 6:04 PM
To: Hemant Kalekar (WI01 - Manage IT);
veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Slow
backup speed
You should check the bptm and bpbkar logs
to see what the system is waiting for.
Without looking at any of the data I would
increase the number data buffers
Try doubling it to 64 and see if you
backup times improve
From:
hemant.kalekar AT wipro DOT com [mailto:hemant.kalekar AT wipro DOT com]
Sent: 10 May 2010 13:24
To: Shekel Tal;
veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Slow
backup speed
# more NUMBER_DATA_BUFFERS
32
# more SIZE_DATA_BUFFERS
262144
The server hosting the disk system resource utilisation is normal.
From: Shekel
Tal [mailto:Tal.Shekel AT uk.fujitsu DOT com]
Sent: Mon 5/10/2010 4:37 PM
To: Hemant Kalekar (WI01 - Manage
IT); veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Slow
backup speed
What size data buffers did you use and how
many?
If you are running a cold flat file backup
you would think the jobs would be flying.
Have you asked your storage admin to check
what your storage array is doing?
Perhaps there are hot spots?
What size raid groups are you using to
host the copy?
Have you checked the server hosting the
disks system resource utilisation?
From:
hemant.kalekar AT wipro DOT com [mailto:hemant.kalekar AT wipro DOT com]
Sent: 10 May 2010 11:49
To: Shekel Tal;
veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Slow
backup speed
Yes the netbackup is
tuned.
Agents are installed and
cold flat file backup is done.
Thanks
and Regards
Hemant
S Kalekar
09819949422
From:
Shekel Tal [mailto:Tal.Shekel AT uk.fujitsu DOT com]
Sent: Monday, May 10, 2010 3:06 PM
To: Hemant Kalekar (WI01 - Manage
IT); veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Slow
backup speed
Have you tuned you NetBackup buffers?
Have a look at the following technote and
setup the size and number data buffers - http://support.veritas.com/docs/183702
Are you using agents and mounting the
image up after the split or just performing a cold flat file backup after the
split?
Regards,
Tal
From:
veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of hemant.kalekar AT wipro DOT com
Sent: 10 May 2010 09:07
To:
veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Slow backup
speed
HI
I am facing problems in backup speed for backing up
SAP databases.
My setup is as follows
I am using shadow image ie split sync for backing up
my SAP databases.The datasize is approximately 13TB.
My PVols are mounted from Hitachi 9990V storage and are attached to Sun
M9000 server.
My Svols are mounted from Sun storage 6140 and are
attached to Sun T5220 which is configured as media server in veritas
netbackup6.0.
I have L1400 Tape Library from which 4 LTO4 drives
are presented to secondary server from which backup is taken,
Average speed per stream is 30MBPS which makes
overall throughput of 4*30=120MBPS.backup time is around 36 hours.
Thanks
and Regards
Hemant
S Kalekar
09819949422
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