However, if you have high-capacity tape, you don't have to spend a whole
tape for each node. You can control the tape use by setting a MAXSCRATCH
value for the tape pool. For example, if you have 200 clients to back up
and you set MAXSCRATCH to 100, TSM will put two clients on each tape. You
get all the benefits of colocation, without having to spend too much extra
tape.
Regarding your configuration: we back up every form Windows, plus AIX, SUN,
IRIX, Mac, OS/2 - all into the same 60 GB disk pool and same tape pools.
OVer 500 clients, and there has NEVER been any type of problem from mixing
this data in the pools or on the tapes.
If you give up your disk pool and go direct to tape, you will lose a lot of
the flexibility that TSM provides and have to do a lot of extra scheduling
for your client backups that TSM would normally handle automatically for
you.
If you split your clients into separate disk and tape pools, you will also
be losing a lot of flexibility and creating yourself a lot of extra
management work, all for no real benefits.
Don't try to make TSM work like another product. It was designed this way
for a reason.
My opinion, take it or leave it...
************************************************************************
Wanda Prather
The Johns Hopkins Applied Physics Lab
443-778-8769
[EMAIL PROTECTED]
"Intelligence has much less practical application than you'd think" -
Scott Adams/Dilbert
************************************************************************
-----Original Message-----
From: Alan Davenport [mailto:[EMAIL PROTECTED]]
Sent: Friday, May 25, 2001 8:10 AM
To: [EMAIL PROTECTED]
Subject: Re: TSM configuration questions
You need to do colocation. Colocation will place files from each client on a
tape by itself providing the client segregation you desire. You can even
break this down even further and colocate by filespace. The downside is that
you will significantly increase the amount of tapes you use. For further
information look in your TSM documentation for "UPDATE STGPOOL".
Al
-=>-----Original Message-----
-=>From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
-=>Sent: Friday, May 25, 2001 5:21 AM
-=>To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
-=>Subject: TSM configuration questions
-=>
-=>
-=>From: [EMAIL PROTECTED]
-=>To: [EMAIL PROTECTED]
-=>Date: Fri, 25 May 2001 02:21:23 -0700
-=>Subject: TSM configuration questions
-=>
-=>I am setting up TSM in our shop and I am learning TSM
-=>as I go. Right now, I have set up a 100GB Disk Pool
-=>and one Tape Pool and one Tapecopy pool for making
-=>offsite storage copies. My questions are:
-=>
-=>If I am doing backups using this configuration, my
-=>daily backups on NT, Netware, and Unix will all first
-=>go to the disk pool and then migrate to the tape pool.
-=> Data on the tapes will consist of information from
-=>all platforms, mixing together, right? I was
-=>uncomfortable
-=>with this data mixing idea. I called TSM support and
-=>they assured me everything would be alright. However,
-=>If I still want to have tapes consisting of only one
-=>platform only, are there ways to configure the system
-=>to do that? My purpose of doing this is to have NT,
-=>Novell, and Unix System Administrators to handle their
-=>own tapes.
-=>
-=>Any ideas or suggestions would be greatly appreciated.
-=>
-=>
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-=>
