Veritas-bu

Re: [Veritas-bu] Slow backup speed

2010-05-10 08:32:07
Subject: Re: [Veritas-bu] Slow backup speed
From: <hemant.kalekar AT wipro DOT com>
To: <Tal.Shekel AT uk.fujitsu DOT com>, <veritas-bu AT mailman.eng.auburn DOT edu>
Date: Mon, 10 May 2010 17:53:52 +0530
hi
 
pls find the output
 # 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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