Archive for the ‘Deduplication’ Category
Wednesday, March 3rd, 2010
TSM presents unique deduplication challenges due to its progressive incremental backup strategy and architectural design. This contrasts with the traditional full/incremental model used by competing backup software vendors. The result is that TSM users will see smaller deduplication ratios than their counterparts using NetBackup, NetWorker or Data Protector. This post ...
Posted in Deduplication | 2 Comments »
Wednesday, February 3rd, 2010
Rumors have been circulating for months about the demise of NetApp's VTL offering. Today, Beth Pariseau from SearchDataBackup published the first public confirmation that development on the product has ceased. It is not a surprise, but makes for an interesting case study.
NetApp acquired VTL technology with their purchase of Alacritus for ...
Posted in Deduplication, Virtual Tape | No Comments »
Tuesday, December 22nd, 2009
When backing up data to a deduplication system, two types of data are generated. The first comprises objects being protected such as the Word documents, databases or Exchange message stores. These files will be deduplicated and for simplicity I will call this “object storage”. The second type of data generated ...
Posted in Deduplication | No Comments »
Thursday, November 12th, 2009
The email below appeared in my inbox yesterday. The EDL/DL3D 1500/3000 has officially been discontinued. It was obvious from the moment EMC purchased Data Domain that the Quantum stuff was dead, but it took time for EMC to finally admit this. The strongest statement came in Frank Slootman's TechTarget interview. Clearly ...
Posted in Deduplication | No Comments »
Tuesday, October 20th, 2009
I attended multiple keynote and breakout sessions at SNW last week, but my busy meeting schedule conflicted with many of the morning sessions. I was able to attend to Data Domain’s talk given by Frank Slootman and wanted to provide some commentary.
The bulk of the session was boring and included ...
Posted in Deduplication, Marketing | No Comments »
Friday, October 16th, 2009
I returned from SNW in Phoenix last night and wanted to recap the event. I had 10+ meetings at the show and there were multiple sessions and so am providing my perspectives on the event in general and the sessions I did attend.
Deduplication remains hot and still confuses many
I attended ...
Posted in Deduplication, Marketing | No Comments »
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 ...
Posted in Deduplication | No Comments »
Thursday, August 27th, 2009
The folks over at the Online Storage Optimization blog recently wrote a post entitled Get Ready for Dedupe 2.0 where they outline their vision for the future of deduplication. I read the post and was amazed at the similarity between their views and SEPATON’s core VTL architecture. I thought that ...
Posted in Deduplication | 2 Comments »
Friday, August 14th, 2009
Chris Mellor (twitter:@Chris_Mellor) recently posted an article over at The Register about LTO-5 entitled Is LTO-5 the last harrah for tape?. He makes an interesting point about the future of LTO and whether LTO-5 will be the last generation of the technology. Most of the comments on the article disagree ...
Posted in Backup, D2D, Deduplication, Restore, Virtual Tape | 2 Comments »
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 ...
Posted in Deduplication, Restore | No Comments »