Trouble shoot tips for Error code 156(Snapshot error)

General Steps :

1) vssadmin list writers : Ensure all ur writes are stable

2) Make sure u have good snap size configured for given drive i.e.10% of utilization.

3) Always use bpfis logs for troubleshooting.

4) Application logs in windows log viewer are helpful.

5) Many times in 156 ; System state backups fails ; make sure any dll is not crashing and not faulting bpbkar ; this can be seen in apllication viewer ; many times i see 6.5 on 2008 windows machines which is not supported.....so on and so forth.....................................................

Help your self :)

Thanks to all for prompt replies.

Thanks for this, from me also it helps. Those 156 snapshot errors can be caused by different reasons as someone pointed out and I am constantly finding out.

Also just to throw it out there, here is what the NetBackup Enterprise Server Knowledge Base Search returned. Pretty much what google returns, but in a more concentrated form.