Matt - the upgrade takes just a minute or two.  It just marks the db with
a software hi-water mark so that you can't start the instance with downlevel 
code.
You need to do a full db backup just before the upgrade so you can restore the 
db if
you need to go back to 4.1.4

Bill Colwell

At 10:38 AM 1/23/2002 -0500, you wrote:
>Hello all,
>        I am running TSM 4.1.4 on ZOS 1.1.   I am planning on upgrading to
>TSM 4.2.1.9.  I was wonder if anyone could ballpark the amount of time it
>will take to do the Data Base upgrade.   My TSM DB is assigned 25GB and 73%
>Utilized.  The machine I am running on, 9672-x57, will be running only about
>60% in the time frame I plan on doing this.
>
>Matt