Jon Toigo writes a blog call Drunken Data. He recently put out a call for dedupe vendors to answer a few questions. You can read some of the unedited vendor submissions, including one for our own product NetBackup PureDisk. I am happy to post it here if anyone finds it too difficult to read through the blog.
The response are different then what you might read in standard datasheet / collateral material. Indeed, it's the contrast of response where you'll find the silver lining.
Finally, a blurb posted from SearchDataBackup.com, by Dave Rafino "Storage Decisions: Users list must-have data dedupe options" where users sounded off on data dedupe. If you're feeling lazy, I'll net it out for you.
1) Dedupe savings are real...