ADSM-L

Re: Question on the preschedulecmd

2005-02-17 11:14:47
Subject: Re: Question on the preschedulecmd
From: Steve Schaub <Steve.Schaub AT HAWORTH DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 17 Feb 2005 11:14:32 -0500
All,
Maybe I missed the beginning of this thread, but I'm curious as to the
advantage of scripting the ntbackup over using the built-in tsm client
backup of systemobject/systemstate/systemservice?  Does this help DR in
some way?
-steve

-----Original Message-----
From: Stapleton, Mark [mailto:mark.stapleton AT BERBEE DOT COM] 
Sent: Wednesday, February 16, 2005 4:46 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Question on the preschedulecmd


From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On 
Behalf Of Jones, Eric J
>I'm at the point where I've tested backing up the SYSTEM STATE
>with NTBACKUP, having TSM backup the drives and exclude the 
>SYSTEM OBJECT, then rebuild the system, restore with TSM and 
>use NTBACKUP to restore the SYSTEM STATE.   I have a batch 
>file to kick off NTBACKUP for the SYSTEM STATE backup and want 
>to use the "preschedulecmd" to run this before TSM scans for 
>changed files and does the scheduled backup.  I need to make 
>sure the batch file completes before TSM does the backup.  
>Would there be any situation that TSM might start backing up 
>before the prescheduledcmd completes?

A PRESCHEDCMD batch file must complete successfully (with RC=0) before
the backup will happen; if a non-zero return code comes up, or the batch
file hangs for any reason, the backup will not happen.

What some have had better luck with is running the NTBACKUP batch file
as a POSTSCHEDCMD. If the NTBACKUP hangs or fails (which happens once in
a while), using POSTSCHEDCMD will not prevent the backup from
completing. Yeah, the NTBACKUP results are 24 hours old when they get
backed up, but does your system state change that frequently?

--
Mark Stapleton (stapleton AT berbee DOT com)
Berbee Information Networks
Office 262.521.5627

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