I sent in a support request but i havent heard anything back on this, so im going to check it in with the forums.
Currently we are testing out a procedure where we backup a system using the r-drive image software with no compression set. We then backup the .arc files using netbackup puredisk which segments files into 128kb segments, compares them to what is currently stored, and then only stores unique 128kb segments (deduplication). While I assume there wouldn't be perfect deduplication on these, i am very surprised that there is a 0% deduplication rate on a full backup taken at 12pm, and another full backup taken at 1pm from the same system. Why would the backups appear completely different from each other if no data has really changed on the system in 128kb segments? Even if i have 3-4 of these full backups from the same system, nothing appears similar between them.
Im trying to validate this as a concept to buy a heck of alot of licenses of the product, so please let me know when you can.