The one 5.5 to 6.1 upgrade I performed involved a 100GB DB of which ~70GB was 
used.  It took ~24 hrs to complete using the network method (Which wasn't the 
bottleneck - Over a 1GB network - the new TSM server had 16GB RAM and something 
like a sick 8 CPU dual core count).  I could see that it wasn't the network 
transfer that was the bottleneck from the monitor.  The worst part was that we 
were left in the dark as to when the estimated completion time was.  

The most time consuming part of the upgrade was the DB2 insertion process.  I 
even opened up a call with IBM to see what the estimated time would be but they 
couldn't offer any estimates and couldn't provide the most efficient method for 
the upgrade.  Very painful outage (with the network method) and if that's the 
migration choice, it's a possibility, I would recommend backing up the clients 
to a new, beefier TSM server as the resource requirements have drastically 
increased with 6.x and DB2 (shudder when mentioning db2..).  Yeah, we also had 
to go through the situation where DB2 ate itself out of log space due to its 
damn reorg, but we fixed that.  Wanda's recommendation about the 2GB dummy file 
is very wise.  Luckily it was all on expandable SAN storage.

But on a positive note, the new TSM server did provide some increased 
performance with 6.1 and the client was happy.  I still had to implement the 
change to disable the DB reorganization because it was eating up 500MB of log 
space every 10 minutes.  

I'm glad that I'm getting out of the TSM business (if they let me!).  I hear 
CommVault is making positive moves...  

Well, off from my rant.  Just wanted to share my experience.  I'm sure others 
have had more positive experiences and if they're joyous, they'll point out my 
fallacies.

Sorry for all the tangents...


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Xav Paice
Sent: Wednesday, May 19, 2010 6:21 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] time needed to upgrade to tsm 6.x?

----- "TSM" <tsm AT PROFI-AG DOT DE> wrote:
> hello,
>
> a question to all of you, who had upgraded tsm 5.5 to tsm 6.x so far.
> in relation to your tsm 5.5 database size i am interested in your
> experience.
>
> anyone seeing chance to upgrade to tsm 6 in 4 hours with a 70 GB
> database?
>
>
> with best regards
> stefan savoric

Our testing, using Windows and a recent CPU etc, showed an average of about 
5GB/hour using disk or tape devices as the media.  The other way to do it is to 
go to a new server and use full backups to the new server, combined with 
exports for historical data if you can't just let it expire.  70GB in 4 hours 
is not going to happen (unless only 20GB of that 70 is occupied).