I'm currently backing up two MS-Exchange servers, both 5.5 and (I think)
SP4.    Back when I was running DLT-7000 drives I maxed out at 32GB per
tape. Our info stores are compressed; I don't know if that is the default
with Exchange or not (I think it is). The only other compression we're
running is at the tape drive level. The same drives would let me put up to
105 GB of SAP/Oracle database on a tape.

Tom Kauffman
NIBCO, Inc

> -----Original Message-----
> From: Ward, Stuart [mailto:Wards AT BMCMASK DOT COM]
> Sent: Tuesday, October 09, 2001 10:01 AM
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Compression and Exchange
>
>
> I have recently taken over an ADSM installation and have need
> to add an
> Exchange server to the list of servers we backup using ADSM.
> Could I get
> some feedback on the best performance settings through
> real-world experience
> to enable me to get the most use out of my tapes.  I have
> available a Dell
> Powervault 130T (4 DLT 7000's) and the following software:
>
> All servers NT4 w/latest SP
> Exchange Version 5.5 SP4
> ADSM - Version 3, Release 1, Level 2.90
> Exchange Connect Agent Version 1.1.1.01 (TDP)
> Client Version 3 Release 1 Level 0.8
>
> I understand from reading the list that in some circumstances
> that the tapes
> have been marked "full" but only contain up to half their compressed
> capacity.  I would like to avoid this if possible to fully
> utilise the tape
> capacity as I have limited resources available to me.  I
> would imagine this
> has something to do with the compression settings on either
> the exchange
> server or ADSM server, so any configuration help would be great.
>
> Any help would be greatly appreciated.
>
> Stu Ward
>