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:[email protected]] On Behalf Of Xav Paice Sent: Wednesday, May 19, 2010 6:21 PM To: [email protected] Subject: Re: [ADSM-L] time needed to upgrade to tsm 6.x? ----- "TSM" <[email protected]> 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).
