ADSM-L

Re: [ADSM-L] Using system z as a TSM server/

2010-01-08 07:50:40
Subject: Re: [ADSM-L] Using system z as a TSM server/
From: Nick Laflamme <dplaflamme AT GMAIL DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 8 Jan 2010 06:48:36 -0600
On Jan 8, 2010, at 3:05 AM, bob molerio wrote:

> Anyone using TSM for zOS?
> I would like to know what the pros/cons/experiences are.

My current employer does in one data center; my immediately previous work 
experience was to move another customer from z/OS to AIX for TSM.

I'm not a MVS guy, so my list of "pros" for this is short: 

a) a shop already has z/OS
b) z/OS is where they have tape drives and where they already know how to 
handle tapes. 

The list of cons is barely longer:

a) There is no TSM version 6 for z/OS, so clearly that's not a good long-term 
direction. This is probably a response to lack of customer demand.
b) Lots of z/OS software is (used to be?) priced by total CPU power in use by 
z/OS. Running TSM on z/OS means you require more z/OS capacity, driving up 
those your software costs. 
c) If you're used to running TSM on other platforms, having something else act 
as your library manager may feel abnormal. 

Apart from those pros and cons, the experiences are probably a result of 
whether you've got z/OS guys who are also trying to run TSM, if if you have TSM 
administrators who are trying to run TSM like they would on any other platform. 
Issues like "what automates responses?" will depend on whether you try to use 
z/OS native facilities or the same tools an AIX TSM site would use. 

Oddly enough, when I saw the subject line, I figured it'd be a question about 
running TSM on Linux on z/Series. That can run on IFLs, and that doesn't factor 
into your z/OS software costs, because that's not z/OS capacity. 

What are the contending platforms? How disciplined and experienced are you on 
those platforms? Many of us love AIX as a host platform for TSM, but if you 
don't have any AIX experience, the learning curve there may deter you. Others 
run TSM on Windows, although there are those who cringe at putting major 
services on a Windows server, perhaps related to bad experiences with Windows 
as a workstation, or bad experiences with Windows administrators who don't 
understand why servers are different from workstations. 
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