Re: Migrating TSM (5.3.2.0) to new Windows box

        This methodology has me really interested.

I am about to try to move a 100GB AIX TSM database to another host. The
disks are totally incompatible, so my option is a db backup and restore.
I assumed I was going to have to disable all sessions, drain all the
disk pools to the tapes, run a db backup, restore the db to the new
host, recreate the diskpools and then let the customers in.
        
        On a 100 GB db on slow disks, I was thinking 6 hours or so of no
customer access.

        Your suggestion of doing a db restore and then an incremental
has me thinking.

        when you do the restore of the full DB backup to the new TSM
server, do you just leave off the "commit=yes" option? 

        Then, once I have all the disk pools drained, I could do an
incremental backup, run a DB restore of the incremental DBbackup on the
new host with the "commit=yes" option and then I could bring up the new
server?

        It should know that all the client data that is on the tapes,
and know that the disk pools are empty when it comes up, right? So I
should not need to audit any volumes.

Thanks,
Ben


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Remco Post
Sent: Wednesday, May 31, 2006 2:24 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Migrating TSM (5.3.2.0) to new Windows box

Dennis, Melburn W IT743 wrote:
> Our old TSM server is EOL and we are replacing it with a new one.  
> They are both W2K3.  What is the safest/best way to migrate?  I was 
> planning on installing TSM on the new box and then using a recent 
> database copy on tape to restore the db on the new box using a point 
> in time restore (since the log volumes will not be on the new box).  
> Is this a valid way to do this?  Am I missing something?
>

what I've done just yesterday is:

on the new box:
format log and db volumes
restore most recent full dbbackup
copy over start/stop scripts and dsmserv.opt

old server:
stop and start with 'DISABLESCHEDS YES' and 'NOMIGRRECL' in dsmserv.opt
disable sessions empty out all disk and file volumes delete them all
make incremental dbbackup halt old server

new server:
retore incermental on new box (commit=yes) start tsm on the new box
recreate disk and file volumes

We usually only do full dbbackups, so I had no intermediate
incrementals...

If you empty out all you disk/file volumes before you restart your
server, your downtime might be as short as one incremental backup and
one incremental resore, minutes....


>
> Mel Dennis
> Systems Engineer - IT743
> Siemens Power Generation
> 4400 Alafaya Trail
> Orlando, FL 32826
> MC Q1-108
> Tel:  (407) 736-2360
> Win:  439-2360
> Fax: (407) 243-0260
> Email:  melburn.dennis AT siemens DOT com


--
Met vriendelijke groeten,

Remco Post

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