Do files live forever?  Or migrate to other storage after a year or two, or by 
some other (least-recently-touched) algorithm?
I assume the files are functionally read-only.
Are the path names date dependent?
Is there an external list of newly added filenames? (This would be a psuedo 
journaled approach.)
Does the PACS offer a way to emulate HSM?
Can you store the original files on a special document server 
(content-addressable-storage, ala EMC Centerra?)
Some have (or will have) TSM API's....
 
Is there any other regularity that can help without risking a "miss" ?

________________________________

From: ADSM: Dist Stor Manager on behalf of Joel Fuhrman
Sent: Wed 6/23/2004 1:54 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: journaling on SUN



Does the TSM client for SUN support journaling?  If not, are there any rumors
that its being developed?

The system administrator for a medical imaging system (GE-PACS) whats to use TSM
for backup.  The system has millions of small files which are never changed.
Only new files are added to the system.  So this seem ideal for journaling.

If journaling is not an option, I would welcome suggestions on methods which
would guarantee that all files are backed up without having to suffer the
overhead of the standard backup process.