No you don't !
Many ways around this...
For each drive that isn't currently active (and one at a time) simply either
make it unavailable at the library manager OR delete it from TSM... then
perform the firmware upgrade to the drive, then bring it back (either make
it available again at the library manager or define it back to TSM)

Say you make it unavailable at the library manager and TSM needs a tape and
happens to try to select that drive...
No biggie, it simply jumps on down to the next drive and starts polling the
one drive that was unavail...
but I personally like to just delete a drive from tsm, do the code upgrade,
then define it back.

not required (that I've ever run into) but if you have any concerns you are
free to remove the device at the aix level & let cfgmgr find it again.

Now you are talking about the code loaded on the actual drives, correct !?!
        Device Specific.(FW)........A558
for example...if so, you should be good to go....

Dwight E. Cook
Software Application Engineer III
Science Applications International Corporation
509 S. Boston Ave.  Suite 220
Tulsa, Oklahoma 74103-4606
Office (918) 732-7109



-----Original Message-----
From: Villegas, Beatrice [mailto:bvillegas AT ADT DOT COM]
Sent: Tuesday, September 17, 2002 12:10 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: 3494 Pause Mode and TSM


Hi TSM'ers,

I have a quick and perhaps simple question. We have to upgrade the firmware
on all our 10 3590 drives and for this we need to put the Library in Pause
mode.

My question is: Should I stop TSM during this time? Or should I just put all
the drives offline?
Is there anything else I should do on TSM?


Thanks in advance,

Beatriz