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Re: [Veritas-bu] VSP versus VSS
2010-06-01 11:49:03
On Tue, Jun 1, 2010 at 10:12 AM, pranav batra <pranav_venture AT hotmail DOT com> wrote:
I have a small question on VSP/VSS.
As symantec recommends VSS for 2003 clients over VSP then why it is the defauly snap-shot provider option ?
It's historical and is no longer the default in NetBackup 7.0.
Any specific reason for this recommendation as i can't find any tech note specifying why VSS:
They all just explain that VSS is for 2003 and VSP for 2000. I agree but why?
Windows 2000 did not have a snapshot service provided by the operating system so Veritas had to write their own. Microsoft added it in Windows 2003.
VSS has a HUGE advantage for the backup administrator because snapshots are now the responsibility of the server administrator, not the backup administrator. If snapshots fail, it's usually because the server administrator doesn't have something configured correctly or the admins have neglected to install patches to VSS (there are some but some Windows admins seem to install ONLY security patches and ignore all reliability/functionality fixes).
What happened two weeks ago:-There are our two cluster server and both got hung while getting backed up.
We are still looking for the root cause but couldn't find yet...The thing we suspect is that they were using VSP and when we changed snapshot provider to VSS( As they are 2003) ,backups and server both running fine from 2 weeks and didn't hung once.
Does VSP plays some part in making the server hung? What could be the possible reasons? Does VSP plays some part in making the CPU utilisation high?
VSP is evil. Don't try and debug it - just quit using it.
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