Steve,

All of the logs must be present. You can not have any missing logs.
When the Exchange server runs recovery, if it discovers that
any of the logs are missing, it will stop replaying the logs
at the point of the first missing log.
For example, let's say you have logs 100 - 845. Now, let's
assume that something happens to log 476... and it is lost.
When the Exchange Server gets to log 475... it will then
look for log 476. Since it is not there, the Exchange Server
will stop recovering at that point. All of the log updates in
logs 476 - 845 will NOT be replayed.

Thanks,

Del

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


"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 10/10/2007
06:42:33 AM:

> TSM server 5.2.7.1
>
> Exchange 2003
>
> TSM 5.3.4.0
>
> TDP for Exchange 5.2.1.0
>
>
>
> We currently use a daily-full, hourly-log backup strategy with our
> Exchange stores.
>
> Our Exchange servers have grown to the point that we aren't meeting the
> full backup window.
>
> While we research long-term solutions, one short-term option we are
> kicking around is moving from a daily full to a weekly full, but we have
> some questions about relying so heavily on the logs.
>
> If we have a problem with a set of logs (bad tape, corrupted log, etc),
> how will that affect recovery?  Will those particular logs just be
> skipped, or would we only be able to recover up to the last good
> incremental log?