11-25-2010 02:21 PM
Netbackup 7.0 Windows 2008 x64 system (C: drive and System State) backup is very slow and always partially completed.
After upgrading from 6.5 all my Windows 2008 x64 SP2 (some of them are R2) servers are being backed up extremely slow (< 100 KB/s).
All these servers are actually cluster nodes and, in contrast to this, their clustered services' drives are backed up normal at good speeds (> 50,000 KB/s).
Additionally, these system drive backups always get completed partially successful with many warnings like:
25/11/2010 18:34:54 - Warning bpbrm(pid=6856) from client xxxxx: WRN - can't open directory: C:\Documents and Settings\xxxx\Documents\My Pictures (WIN32 87: Unknown error)
Any ideas or known workarounds?
Thanks
Z
11-25-2010 04:11 PM
check in your master server host properties for those clients, to confirm what snapshot method is specified
do you see VSS is used?
and you upgraded both NBU master and NBU client from 6.5 to 7.0 ... right?
11-25-2010 05:22 PM
VSS is being used.
And yes, all NBU peers are Version 7.0.
11-25-2010 05:31 PM
And, for test, I have downgraded some of these clients back to 6.5 and the backups speed up to normal rates. Partial success remained though.
Then I moved them back to 7.0 and the backups slowed down again.
It is obviously something in the 7.0.
11-25-2010 08:09 PM
You can consolidate the data from the path you are getting the warnings and exclude them from backup after confirming with user.
In my environment we faced similar issue with log files and excluded them to get backups successfull.
11-25-2010 11:17 PM
Warning bpbrm(pid=6856) from client xxxxx: WRN - can't open directory:
The below may help you may be some access/permission issue
What i feel that just for checking at Netbackup Client site add the domain administrator account under the Netbackup Client Service -> logon account -> Logon as session.
(see the snap below for your reference)
Try this
11-26-2010 08:13 AM
do you check the HCL for NBU 7 for your servers cauing this problem?
11-27-2010 02:30 AM
enable the bpbrm logs for more details
11-27-2010 07:05 PM
The servers are supported Dell rack-servers, HBAa are qlogic, NICs Intel, disk EMC CX4, and tapes STK SL500.
So all should be perfectly certified.
11-27-2010 07:06 PM
have tried this and got the same result as when LocalSystem was used.
so it didn't help.
11-27-2010 09:16 PM
could you please attache your windows logs (system - Application) and the logs of the NBU jobs
11-27-2010 11:25 PM
any update ?
11-28-2010 01:55 AM
EEB available from Symantec Support:
http://www.symantec.com/docs/TECH140077
"If this issue is experienced while running NetBackup 7.0 or 7.0.1, please contact Symantec technical support, referencing this document ID and Etrack 2085561 to obtain an EEB replacement bundle for affected clients."
11-28-2010 10:08 AM
Hope this may help you:
https://www-secure.symantec.com/connect/articles/tuning-windows-2003-and-2008-symantec-netbackup
12-01-2010 08:29 AM
Hello Marianne,
Thanks for your inputs. I will do as you suggest here and come back to the thread with updates on how it went.
Regards,
Zvonimir
12-01-2010 08:33 AM
Thanks Zahid,
I was on other projects and could't handle this for a while.
I should be in position to enable logging and get the logs early next week and will share them here.
Rgds
Zvonimir
12-12-2010 11:54 PM
Zvonimir,
I am having a similar issue with my backup speeds for some Win2008 x64 clients with the backups for C and System State running extremely slow.
Were you able to resolve your backup speeds issue yet? If so, please let me know how you did it.
Thanks,
David Dampf
01-15-2011 10:30 AM
Possible reasons for slow backups:
http://www.symantec.com/docs/TECH145791
The first is related to the Windows 2008 R2 kernel. Under heavy I/O the kernel may not perform as expected. The cause of this issue is documented in Microsoft KB article 982383.....
A second known cause of Netbackup 7 performance problems is related to the Power Options settings in Windows....
A third known cause of Netbackup 7 performance problems is related to the TCP Chimney Offload and Receive Side Scaling (RSS) settings of the network interface....