I have expirience in both AIX and Windows and I would recomend to you to
have Your TSM Server in the environment you are confortable with, But.
AIX works and performs better than Windows but that´s mainly because the
Backup system was written for the AIX environment and then compiled over to
Windows.
The Windows server needs more maintenance, but the AIX Server need
maintenance too, so unless you have good experience in the OS or have good
support on it close by, don´t go to AIX.
The worst thing about TSM on Windows is that you need a more CPU power than
you need on the AIX, and the TSM Server seems to hang from time to time when
you are working on it. Exaple, last week i was extending the database and
the TSM Server froze, that would never had happend if it where AIX.
I have been supporting TSM in all kind of OS for a long time and my opinion
is this.

On the scale from 1 to 10
                                   AIX   WINDOWS
Performance                10          6
Maintenance                  5         4
Up-Time                       10          6
User-Friendly               3            10
Hi-End-Enviroment        9            2
Low-End-Enviroment      9            9

So the bottom line is if you are going to need Cluster, HACP (The AIX
Cluster), and you think you are going to support a Large Network where the
Load and Perfomance on youre TSM Server is 24/7, Don´t go to Windows, you
will have to mutch trouble maintaning the Windows version of TSM.
But if youre TSM Server isn´t going to bee that big than chose Windows, it´s
mutch simpler in maintenance and easy to use.

Where i mean big networks i am meaning an enviorment where you are going to
have more then 2 TSM Server´s with Server to Server and or in a Cluster env,
more than 4 LTO or 6 DLT or  8 Magstar drives, a library that holdes more
than 10 Ters of data and finaly a Server that has more than 50 gigs of
database.
If youre network sounds something like this i recomend AIX. this senario is
complex and it is alsow complex in maintenance so then youre TCO "Total Cost
of Ownership" will benefit to hire a AIX expirienced Unix Specialist rather
than take on a journey with Windows where youre budged goes down the drain
in maintenance cost.



Kvedja/Regards
Petur Eythorsson
Taeknimadur/Technician
IBM Certified Specialist - AIX
Tivoli Storage Manager Certified Professional
Microsoft Certified System Engineer

peddi AT itn DOT is

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