I'd say it would be a good idea to mirror your dbvols & logvols anyway,
even if to the same disks, it could save your TSM server down time. I
don't mirror the diskpool, didn't know you could, but I do backup the
diskpool and would suggest doing that as well.
Iain



-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Jones, Eric J
Sent: 06 April 2005 21:56
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] Question on SETUP

Good Afternoon.
I was asked to setup a new TSM server 5.2.2 on a AIX 5.2 server.
My question has to do with setting up the DB, LOG and DISKPOOL.
On our current servers which run the same O/S and TSM version the DB,
LOG and DISKPOOL are mirrored.
On the new system I'm setting up these are all going to reside on a IBM
SAN(SHARK) which is all RAID.
Is there any reason to mirror them since the mirror would be on the same
set of drives(space was already allocated on a LUN)?
I understand it's always good to mirror(protect DB, LOG, DISKPOOL) but
in this case I'd have to mirror to the same set of disk since I was only
allocated a set of space to work.  In the TSM class it also recommended
that you mirror for protection.
I'm in the middle of reading the "Quick Start" for the second time and I
see they recommend "Mirror your Database and recovery log for "Server
and storage pool protection".  I wanted to make sure there was not a
performance issue or anything else.

Have a Great Day,
Eric Jones
> *  eric.j.jones AT lmco DOT com
> *:   607-751-4133
Cell : 607-972-7621