The IBM Redbook - TSM 3.7.3 & 4.1 Technical guide - states "delta file backup can occur up to 20 times before a new base file backup occurs again."
Can anyone confirm if this is still true? I'm running 4.2.1.20 client on W2K, 4.2.0.0 Server on W2K. I've setup a separate schedule to backup my outlook pst file using sub-file backup. I'm tracking the amount of data sent every day. I'm up to what appears to be delta version 26. Each delta version gets a little bigger (My PST is 200 MB, first subfile was 7 MB, I'm now at 40 MB). The base file in my client cache directory has a modified date of April 24, 2002 - the first day I started this. My PST file was backed up 4 times outside of this special schedule so I cannot confirm how much data was sent those 4 times (Outlook was left open, PST was modified and backed up as part of regular schedule). But if a new base file backup had occurred then I'm assuming the modified date of the base file in my client cache directory should have changed. Also the delta files after a new base backup should have reverted back to a smaller amount of changed data - all of mine show a minor growth each day. On another note, is there anyway to determine the space savings using subfile backup? Thanks, Tim Rushforth City of Winnipeg
