Varian,

Adaptive differencing is targeted for remote clients where network bandwidth
is in Kbytes and everyday backup is approximately 100 MB's. TSM client has
extensions which first time sends whole file and it uses few metrics and
stores them at client side. Second day backup of file is differentiated at
send to server. Server consolidates files in delta form and it stores base
file plus delta. When you do restore client pulls both files into staging
area and assembles into one file. If you have 10/100/1000 Ethernet, don't
consider using this technology. It's disadvantages are: More processing
power is required. Staging area needs to designated atleast of 10% of file
system size.

Thank you,
Bandu Vibhute,
George Weston Bakeries Inc.
Voice: 631-951-5212,
Cell: 516-702-0323