What is the underlying disk structure (Raid, # spindles, type of disk) of the lun that holds the Exchange databases? What is the disk latency before, during, and after the backup? If your latency is high before the backup starts, then it’s going to be terrible during the backup and lead to poor performance.
-Jonathan
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Brian Marsee
Sent: Sunday, October 23, 2011 4:54 PM
To: 'Len.Boyle AT sas DOT com'; 'veritas-bu AT mailman.eng.auburn DOT edu'
Subject: Re: [Veritas-bu] BackupExec 2010 R2 Job Rate Very Slow
Hi Len,
Using exchange 2010 on windows 2008 R2 with 1 active dag and 1 passive dag. Currently backing up the active dag to a CIFS share on the Backupexec server which is mounted from an EMC Data Domain appliance (Deduplicated disk array). Exchange servers are virtualized with VMware vsphere 4.1. Performance is dog slow for these backups.
Thank You,
Brian Marsee
Relational Technology Solutions
(734)748-4499 - Mobile
From: Len Boyle
To: Brian Marsee; veritas-bu AT mailman.eng.auburn DOT edu
Sent: Sun Oct 23 15:26:58 2011
Subject: RE: BackupExec 2010 R2 Job Rate Very Slow
Hello Brian,
It depends. Which exchange server are you using.
Are you writing to a backup folder or to a virtual tape drive
This may not be the only or the best method.
If to a backup to disk folder and you have multiple daq’s or storage groups then you can put them in different jobs.
If you allow multiple jobs to write to the backup to disk folder then you can have multiple jobs running at the same time.
len
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Brian Marsee
Sent: Sunday, October 23, 2011 4:22 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] BackupExec 2010 R2 Job Rate Very Slow
Hello All,
Currently running backexec 2010 R2 and the backups are writing to Data Domain. The job rate and performance is extremely slow and backups for a 1TB exchange server are running extremely long (20+ hours)! I can see from the data domain auto support that backupexec is only pushing a single backup stream. Is there a way to increase the number of backup streams in backupexec to get better performance? I have ensured that the speed and duplex settings on all servers, switches, and data domain are hard coded to 1gb full duplex. Is there something else that could be related to the very slow performance?
Thank You,
Brian
