My answer would be, it depends.   Depends on how much preparation you do ahead 
of time.  Depends on if you are staying on the same box or moving to a new box. 
 Depends on the size of the box.  A couple different variables could change the 
total time. 

I just upgraded a 5.5 TSM server on AIX 5.3 running on an LPAR on a p670.  The 
LPAR had 16 GB RAM and 4 CPUs and 1 GigE NIC.
I upgraded to TSM 6.2 --AIX 6.1 TL4 on a p6 520 with 4 CPU & 16 GB RAM  & 3 
GigE NICs.

My TSM 5.5 database was 276 GB (allocated), 167GB (used).  The new AC & TIP 
were installed on a separate RH Linux box.  My p6 520 was preconfigured and TSM 
6.2 installed and ready to accept the TSM 5.5 data.

Everything was prepped the week before.  The TSM upgrade method was chosen was 
the network method to a new server.  The total time to upgrade TSM 5.5 server 
once it was halted, and once we could bring up the new TSM 6.2 server on the 
new host was 8 hours.



-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
TSM
Sent: Wednesday, May 19, 2010 2:29 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] time needed to upgrade to tsm 6.x?

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