It depends upon how you configure things.  For dynamic allocation of
volumes, then yes you are limited to the size of the file system that
you mount on that mount point.  However if you define the stgpool
volumes explicitly using the DEFINE VOLUME command, you can place the
volumes across as many file systems as you want.  I will email you a PDF
presentation IBM has on Disk Only backups. 


H. Milton Johnson
 
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Eliza Lau
Sent: Monday, September 20, 2004 12:11 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: D2D on AIX

Our 3494 with 3590K tapes in 3 frames is getting full.  Instead of
adding another frame or upgrading to 3590H or 3592 tapes we are looking
into setting up a bunch of cheap ATA disks as primary storage.

The FILE devclass defines a directory as its destination and JFS2 has a
max file system size of 1TB.  Does it mean the largest stgpool I can
define is 1TB?

My Exchange stgpool alone has 8TB of data.  Do I have to split it up
into 8 pieces?

server: TSM 5.2.2.5 on AIX 5.2
database 90GB at 70%
Total backup data - 22TB

Eliza Lau
Virginia Tech Computing Center
lau AT vt DOT edu