>From a recent case with Symantec support:
... in the NB_6.5.6 readme, might be something to consider. =================== NetBackup 6.5.6 automatically installs the Veritas volume snapshot Provider (VSP) method for Open File Backups. VSP is the default Open File Backup method in this release. NetBackup 6.5.6 includes the VSP disable tool (bpvspdisable.exe) for administrators to use to disable VSP on clients if it is not needed. The tool deletes the VSP cache files from the disk of the client system. All future VSP requests on those clients are redirected to use Microsoft native Volume Shadow Copy Service (VSS). The VSP method for Open File Backups is not supported in NetBackup 7.0. Having run the VSP disable tool does not affect upgrading to NetBackup 7.0. The VSP disable tool can be used on the following operating systems: ■ Windows Server 2000 ■ Windows Server 2003 with Service Pack 2 (x86 and IA64) ■ Windows XP 32-bit and 64-bit (x86 and IA64) ======================== George Herbert Basline Storage Engineer - Backup SunTrust Banks, Inc. From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Spencer O'Donnell Sent: Tuesday, June 01, 2010 1:14 PM To: Ed Wilts; pranav batra Cc: Veritas Subject: Re: [Veritas-bu] VSP versus VSS May as well convert to VSS now. It is no longer there in 7.0. I swapped all my 2003 and 2008 clients and things have never work3ed better, no more status code 156 errors. There is a good vss enabler script on the Symantec Forums. From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Ed Wilts Sent: Tuesday, June 01, 2010 11:49 AM To: pranav batra Cc: Veritas Subject: Re: [Veritas-bu] VSP versus VSS On Tue, Jun 1, 2010 at 10:12 AM, pranav batra <pranav_vent...@hotmail.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. .../Ed Ed Wilts, RHCE, BCFP, BCSD, SCSP, SCSE ewi...@ewilts.org Linkedin <http://www.linkedin.com/in/ewilts> LEGAL DISCLAIMER The information transmitted is intended solely for the individual or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you have received this email in error please contact the sender and delete the material from any computer. SunTrust is a federally registered service mark of SunTrust Banks, Inc. Live Solid. Bank Solid. is a service mark of SunTrust Banks, Inc. [ST:XCL]
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