Kumar,

You can create 2 additional copies of TSM DB with command "define dbcopy".
Creating database copy in AIX rootvg will degrade performance of database
and you will not able to take mksysb/sysback unless database is stopped. So
one copy is best solution. If you have problems with one VG you can remove
dbcopy, reduce vg and recreate dbcopy on separate VG.

Thank you,
Bandu Vibhute,
Bestfoods Baking Company,
55 Paradise Lane, Bay Shore, NY, 11706
Voice: 631-951-5212, Cell: 516-702-0323