Mainly we do backup UNIX machines with scientific data, UNIX
     machines with commercial databases and NetWare LAN Servers which
     hold only one copy of a file for many PCs.

     (For your further information: In our company ADSM handles about
     30 GB at every night. In total we have about 2.5 million files
     with a volume of about 600 GB in our DB/Storage Pools. We have
     only about 50 nodes defined.)

     Currently we are not interested in any (more) overhead done for
     adding a feature to detect duplicate files. If you plan to add
     that, please make it optional, so we can switch it off.

     Christian Moser,           Internet: christian.moser AT schering DOT de
     SCHERING AG, 13342 Berlin, Tel.: (030)4681356 Fax: (030)46916719


     ____________________________ Antwort-Abtrennung
     ________________________________
     Betreff: Duplicate Files
     Autor:  ADSML (INTERNET.ADSML1) bei SNAPI
Datum:    04.01.1996 21:23


     FROM   :   Paul L. Bradshaw
                INTERNET.ADSML1
                ADSM-L AT VM.MARIST DOT EDU

     DATE   :   01/04/96
     SUBJECT:   Duplicate Files

The subject of detecting duplicate files, etc., has been discussed in ADSM
many times.

     ...

So, IBM is listening.  Those are our thoughts on this so far.  On the
surface it looks like a valuable, cost savings function.  But once you dig
into it the cost savings become very minimal if any at all.

Let me know if you agree or not.  We don't have all the answers to this,
so your input is valuable in setting our future directions.

Paul Bradshaw