ADSM-L

Re: Migration from AIX to Solaris

2002-11-22 11:47:45
Subject: Re: Migration from AIX to Solaris
From: Joshua Bassi <jbassi AT IHWY DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 22 Nov 2002 08:42:03 -0800
> Are you saying that the internal format of the db changes between
OS's?

Yes, the format is absolutely different.

> Install ITSM on Solaris
> Export filesystems on AIX containing db and log areas
> NFS mount those filesystems to Solaris
> Update dsmserv.dsk on Solaris to point to NFS db and log areas

Because of this, this option even though easily doable from the OS side,
would not work for the TSM application.


--
Joshua S. Bassi
IBM Certified - AIX 4/5L, SAN, Shark
Tivoli Certified Consultant -ADSM/TSM
eServer Systems Expert -pSeries HACMP

AIX, HACMP, Storage, TSM Consultant
Cell (831) 595-3962
jbassi AT ihwy DOT com

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Allen Barth
Sent: Friday, November 22, 2002 8:22 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Migration from AIX to Solaris


Are you saying that the internal format of the db changes between OS's?

If not, I wonder if this would work:

Install ITSM on Solaris
Export filesystems on AIX containing db and log areas
NFS mount those filesystems to Solaris
Update dsmserv.dsk on Solaris to point to NFS db and log areas

Insights, ideas, gotcha's  all welcome.

Al Barth




"Prather, Wanda" <Wanda.Prather AT JHUAPL DOT EDU>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU> 11/22/02 09:41
AM Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Subject:        Re: Migration from AIX to Solaris


The big obstacle here is no, you can't move a TSM DB across platforms.

You can EXPORT the definitions, like policies, mgmt classes, schedules,
admins, etc. and reimport them to the new server; you can EXPORT and
IMPORT the client data as well, but this is really rebuilding the DB on
the new server as the IMPORTS occur; and it's obviously time-consuming.

There are two ways to approach the move:  some people just start backups
on the new server, leave the old one around for a while until the data
ages
enough to be useless, then shut it down.   Other people try to do the
EXPORT/IMPORT thing.  Your decision will depend on your circumstances,
how much time you have, and how much backup & archive data.

To do the EXPORT/IMPORT, you either have to have compatible media, or
use server-to-server virtual volumes to transmit the data from one TSM
server to
the other.   (This requires a DRM license, I think for the target
server.)

As far as using the same library, the answer is "probably".    I don't
know
if you can share the 3583 with TSM library sharing, if so that would be
ideal as it would let you use the drives as needed.  The other
alternative is to physically share the library and dedicate some drives
to the new server and some to the old server until you get all the data
moved.  Don't know enough about the 3583 to get further than that.

That's hardly a complete answer, but maybe it will get you on the road
to the next set of questions....

************************************************************************
Wanda Prather
The Johns Hopkins Applied Physics Lab
443-778-8769
wanda_prather AT jhuapl DOT edu

"Intelligence has much less practical application than you'd think" -
Scott Adams/Dilbert
************************************************************************










-----Original Message-----
From: Doug Baker [mailto:dbaker AT WESLEYAN DOT EDU]
Sent: Friday, November 22, 2002 8:42 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Migration from AIX to Solaris


Hi everyone,

Currently we're running TSM 4.2.3.0 on AIX, attached to an IBM 3583
library. I'm curious about the prospects of migrating the TSM system
from AIX to Solaris.

1. Is it feasible to do this with the same library? (does the existing
data on the 3583 tapes need to be converted, or can a TSM database be
exported from AIX to Solaris, and the new server read from the existing
data?)

2. Is there a guide to doing this with the new versions of TSM? I recall
folks talking about an old ADSM Redbook, but I don't know if the same
rules apply to TSM.

I imagine this is a vast topic, so I'll start with these questions.
Thanks!

Doug
dbaker AT wesleyan DOT edu