ADSM-L

Re: [ADSM-L] NBU guy in TSM shop and I need help

2010-08-10 18:34:05
Subject: Re: [ADSM-L] NBU guy in TSM shop and I need help
From: "Huebner,Andy,FORT WORTH,IT" <Andy.Huebner AT ALCONLABS DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Tue, 10 Aug 2010 17:33:19 -0500
TSM does not use the traditional rotation of tapes as you have discovered.  TSM 
is about retaining the objects as the admin sees fit.  Tapes are merely 
storage.  This approach has its ups and downs.  I keep 60 days and 15 versions 
and only use 3 times the storage as I am protecting.  When we were running 
BackupExec we were 9:1. I have 16 tape drives and 3TB of disks servicing 300 
backup streams.
The flip side as you have found is many tapes are needed for restores.  I 
typically allocate 4 or 5 drives if the restore is big and important.  NBU 
would do nicely with 1.

If you want you can drop me a note off-line and I will help if I can.

By the way, the manuals really are fantasic...

Andy Huebner


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
ego3456
Sent: Tuesday, August 10, 2010 1:28 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] NBU guy in TSM shop and I need help

thanks to all that responded, I'm aware this is a technical forum, and I'm also 
aware it is populated by mostly TSM admins with a bent toward fighting for its 
continued use.  to the point of the post however, we have more than one 
management class, and more than one policy, I'm just trying to discern what 
most of this all means and how one tweak effects another.

I guess the question is more of a governance question than a strategy question 
as once i understand the governance i can implement the strategy.

Please know that I'm not new to backup, I've been doing them on an enterprise 
level for over 10 years.  I'm only new to TSM and while the responses here have 
been very helpful in guiding me to see what each field does, the question has 
now been some what mutated to more about how much of a rework is it going to be 
to set the course straight, and is it possible at all with the existing 
hardware.  if it is a lot of work, then I'm going to rip it out and do what I'm 
most familiar with, if it is going to take a significant economic investment, 
then I'm going to rip it out and do what I'm familiar with.  if it is a matter 
of click here and go, then I'll keep what we have.  My guess is that I'm 
ripping it out.  for me, personally i know NBU backwards and forwards, have 
several custom scripts, and don't have any issues with backup windows or 
network throughput that can see benefit from TSM.

in short, there doesn't seem to be a quick fix for this, and if I'm going to 
swim in a murky pool, I'll choose the pool in my back yard over the one down 
the street.

Thanks all for your help,

-eric

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