Here's an idea:

Create a second node name to do Exchange backups on a different schedule
with a different file retention on a non-default management class.

--
Mark Stapleton 

From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On 
Behalf Of Dean Edmonds
>To enable me to get a month end backup I have scheduled a 
>"copy" to run on
>the 1st day of the month
>I use a "copy" so as not to affect the full & incremental 
>daily backups I
>run
>
>Full runs on Wednesday Incr (log backup) runs every day
>
>Either copy * or dbcopy * work as expected but any subsequent 
>log backup
>the application event log indicates log files are missing or corrupt
>
>"tdpexcc.exe backup * copy /tsmoptfile=%exc_dir%\monthly_dsm.opt
>/logfile=%exc_dir%\excschmth.log >> %exc_dir%\\excmth.log" or
>or "tdpexcc.exe backup * DBcopy* /tsmoptfile=%exc_dir%\monthly_dsm.opt
>/logfile=%exc_dir%\excschmth.log >> %exc_dir%\\excmth.log" or
>
>Has anyone seen this before on all of these versions of client
>I know there is a new command for exchange 2000 called DBCopy 
>and I have
>only attempted using this on one server through the GUI but 
>then I tried an
>Incremental and the same old message appears
>All Exchange servers are Windows 2000 SP3 Exchange 2000 SP3 
>(including the
>post SP3 sept update)
>
>Does anyone else do 1 off backups of their exchange servers 
>(month ends or
>year ends)
>
>Thanks
>Dean
>
>