Veritas-bu

Re: [Veritas-bu] VSP making server hung.

2010-05-21 05:33:07
Subject: Re: [Veritas-bu] VSP making server hung.
From: "WEAVER, Simon \(external\)" <simon.weaver AT astrium.eads DOT net>
To: "pranav batra" <pranav_venture AT hotmail DOT com>, "Veritas" <veritas-bu AT mailman.eng.auburn DOT edu>
Date: Fri, 21 May 2010 10:32:43 +0100
VSP is not good. I would turn it off.
For older legacy systems, it was fine, but it can cause a server to have as it tries to take a snapshot of a drive. And it can sit there for ages!
 
Personally, Win2k3 should be using VSS - Same as Win2k8
 
Might well be wrong here, but by default, the VSP option is enabled, but I think in 6.5.6, it is no longer enabled by default.
 
Generally I have found VSP does not play when you limit the size its cache files can grow too. 
 
As you said, best to make sure you have a ton of disk space on the drive it is placing them on, and try not to run too many jobs at once as it will kill your throughput and put a load on the machine. And even make it non responsive !
 
you can also research tuning VSP, but for Win2k3 clients and higher, why bother?? When VSS is much, much better. NBU Admin Guide Vol 1 is a friend to talk to :-)
 
Greetings from Simon :-)


From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of pranav batra
Sent: Thursday, May 20, 2010 5:16 PM
To: Veritas
Subject: [Veritas-bu] VSP making server hung.

Hello,

There is one windows 2003 server and we are taking it's backup via VSP .
What we have found that in last couple of weeks that when ever tha backup starts the server gets hung.

PS:-We have adequate free space in all of the drives.
When i changed snapshot from VSP to VSS:-It started working fine.

Though i know that VSS is recommended for 2003 servers but we were using VSP since long and thuis server hang issue is very new.

Please explain as i am a bit confused between VSP and VSS.

Does VSP play any part in making the server hung?
Does VSP deletes the nbu_vsp_cache after the reboot of the server ?
Or it's something else that ia making the server hung ?

Please clear me on this.




Thanks and Regards
Pranav Batra

 




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