Global Deduplication Explained

Wednesday, September 9th, 2009

W. Curtis Preston recently authored an article on Searchstorage.com.au explaining global deduplication.  This is an important topic which frequently causes confusion.  Curtis does a good job explaining the technology and what it means to end users and  I recommend the article. A quick summary is that global deduplication means that a ...

CommVault and Forward Referencing

Thursday, August 6th, 2009

I was recently reading this document from CommVault that highlights their deduplication technology and was surprised by their use of the term “forward referencing”. Forward referencing is a common term in deduplication with a generally agreed upon definition. CommVault appears to have redefined the word and promoted their version as ...

Defragmentation, rehydration and deduplication

Wednesday, June 24th, 2009

W. Curtis Preston recently blogged about The Rehydration Myth. In his post he discusses how restore performance on deduplicated data declines because of the method used to reassemble the fragmented deduplicated data on disk. He also addresses the ways various technologies attempt to overcome these issues, including disk ...

W. Curtis Preston on physical tape

Thursday, April 9th, 2009

W. Curtis Preston recently wrote an article on the state of physical tape for SearchDataBackup. He talks about the technologies that backup software vendors have created technology to more effectively stream tape drives. As I posted before, if you cannot stream your tape drives, their performance will decline ...

Restore Performance

Wednesday, March 4th, 2009

Scott from EMC posted about the EMC DL3D 4000 today. He was responding to some questions by W. Curtis Preston regarding the product and GA. I am not going to go into detail about the post, but wanted to clarify one point. He says: Restores from this [undeduplicated ...

W. Curtis Preston Now with TechTarget

Thursday, February 19th, 2009

About a week ago, Curtis posted on his blog that he is joining TechTarget as an Executive Editor which essentially means that he will continue to present at various events. He is still an independent consultant and can keep working on his other projects including his Mr. Backup Blog and ...

AboutRestore.com recognition

Wednesday, October 1st, 2008

W. Curtis Preston the author of the Mr. Backup Blog recently posted an article about the blogs that he frequents. I was honored that he recognized AboutRestore.com along with blogs from other major vendors. Curtis mentioned his frustration with the comment filtering policies on some blogs and I wanted to ...