Hello.  We are having a problem in doing incrementals backups on our TDP 
Exchange server.
The TSM schedule kicks off the backup fine, but it fails with a snapshot 
operation error.
We are using TDP v 6.3.0
And this is the command we are using in the excincr.cmd file:
tdpexcc backup * incr /EXCLUDEDAGACTIVE /tsmoptfile=dsm.opt /logfile=excsch.log


output:
02/25/2013 15:01:26 ============== Log file pruned using log retention period 
of 60 day(s)
02/25/2013 15:01:26 ============== No log entries pruned
02/25/2013 15:01:32 ACN5917I The mailbox history has been successfully updated 
on the TSM Server.
02/25/2013 15:05:02 
=========================================================================
02/25/2013 15:05:02 Request                       : QUERY EXCHANGE
02/25/2013 15:05:02 Exchange Server               : (default)
02/25/2013 15:05:02 
-------------------------------------------------------------------------
02/25/2013 15:05:05 ACN6031I Excluding <Active> database <DB1> from backup list 
-- skipping.
02/25/2013 15:05:05 ============================================================
02/25/2013 15:05:05 Request                           : VSS BACKUP
02/25/2013 15:05:05 Component List                    : 'DB2', 'DB3'
02/25/2013 15:05:05 Backup Type                       : incr
02/25/2013 15:05:05 Backup Destination                : TSM
02/25/2013 15:05:05 Local DSMAGENT Node               : Exchange_BA1
02/25/2013 15:05:05 Offload to Remote DSMAGENT Node   :
02/25/2013 15:05:05 Mount Wait                        : Yes
02/25/2013 15:05:05 ------------------------------------------------------------
02/25/2013 15:06:13 Server                            : TSMPOK
02/25/2013 15:06:13 ------------------------------------------------------------
02/25/2013 15:08:52 ANS1327W The snapshot operation for 'EXCHANGE1\Microsoft 
Exchange 
Writer\{76fe1ac4-15f7-4bcd-987e-8e1acb462fb7}\DB3\596ceca2-f9f1-463f-babb-3a76eb4f2011'
 failed with error code: -1.
02/25/2013 15:09:01 ANS1235E (RC-1)   An unknown system error has occurred from 
which TSM cannot recover.
02/25/2013 15:09:01 ACN5060E A Tivoli Storage Manager API error has occurred.

____________________
Jeannie Bruno
Senior Systems Analyst
jbruno AT cenhud DOT com<mailto:jbruno AT cenhud DOT com>
Central Hudson Gas & Electric
(845) 486-5780