ADSM-L

Re: TDP, Exchange 2003, and SANs

2004-06-24 14:03:19
Subject: Re: TDP, Exchange 2003, and SANs
From: Del Hoobler <hoobler AT US.IBM DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 24 Jun 2004 12:34:29 -0400
Todd,

Again, you don't need to worry about it. When Data Protection
for Exchange signals that it will start a backup,
the Exchange Server starts a new "set of logs".
That is, the current transaction logs are no longer written to
and are marked "full" and backed up (even though
there may be some unused portions of the file.)
Exchange handles all of this for you.

Obviously, in the case of a complete disaster,
you can only restore what has been backed up.
If you aren't doing a "constant" incremental backup,
you will also be missing the the full logs that have
been generated since the last incremental. You will want
to base the frequency of your incremental backups on
how much data you are willing to lose in case of
a complete disaster... in most cases a rare occurance.

Thanks,

Del

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

"ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> wrote on 06/24/2004
11:59:45 AM:

> Thanks, Del.
>
> My comment  regarding living with an incomplete/incorrect point of
> recovery was solely meant to represent that in a complete data center
> wipe-out, the existing full and incrementals that we have offsite would
> not accurately represent what was in a particular mailbox at the time of
> the backup.  Since TDP doesn't backup a log file unless it is filled
(and
> I assume that means if a log file is open, the TDP doesn't backup that
> information in those logs).  If somehow, TDP is able to get this
> information from the currently open log files (four per storage group,
or
> is it four per mail store), then we will be OK.
>
> Thanks again.. I will be testing how all this works as soon as we can.
> Todd
>

<Prev in Thread] Current Thread [Next in Thread>