As some of the listers have already mentioned...

Data Protection for Exchange tells the Exchange Server that the
full (or incremental) backup was successful and that it is now safe
to truncate the logs. The actual log files get physically deleted by the
Exchange Server, not Data Protection for Exchange. There are a few things
that can sometimes "delay" this truncation. One such thing is
LCR or CCR replication on Exchange Server 2007.

If you are worried that Data Protection for Exchange is not doing
something correctly... you can certainly open a call with IBM support.
They will most likely have you turn on tracing... and look for this in the
trace:

=====================================================================
backupsg.cpp        (1764): Enter CBackupSg::truncateExchangeLogs()
backupsg.cpp        (1775): Calling HRESEBACKUPTRUNCATELOGS( 0x1d0cfa00
)...
e2kapidl.cpp        (1102): Enter CE2kApiDL::hrEseBackupTruncateLogs
baseapi.cpp         ( 183): Enter DBaseApi::StartApiCall()
baseapi.cpp         ( 188): Exit DBaseApi::StartApiCall()
baseapi.cpp         ( 242): Enter DBaseApi::EndApiCall()( Exchange )
baseapi.cpp         ( 263): Exit DBaseApi::EndApiCall(), elapsed seconds
0, total time 0 for Exchange Apis
e2kapidl.cpp        (1110): Exit CE2kApiDL::hrEseBackupTruncateLogs
backupsg.cpp        (1790): HRESEBACKUPTRUNCATELOGS() was successful.
=====================================================================

The HrESEBackupTruncateLogs() function notifies ESE (Exchange database
engine)
that the database (full) and logs (full, incr) have been backed up
successfully,
so it can delete the logs when it is ready.

Thanks,

Del

----------------------------------------------------

"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 07/28/2008
05:38:10 PM:

> [image removed]
>
> Exchange 2007
>
> Ochs, Duane
>
> to:
>
> ADSM-L
>
> 07/28/2008 05:38 PM
>
> Sent by:
>
> "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
>
> Please respond to "ADSM: Dist Stor Manager"
>
> I'm running backups using TDP for MAIL - Exchange 5.5.1
> Running fulls daily. And the trans logs are not being deleted.
>
> No errors. No failures. The documentations indicates that Exchange is
> supposed to perform this maintenance upon completion of a full backup.
>
> A premiere call was placed with Microsoft. They state that the backup
> software is supposed to perform the deletion.
>
> Any ideas ?