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 »
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 »
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 ...
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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 »
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 ...
Posted in Deduplication, Restore | 3 Comments »
Friday, May 8th, 2009
CA recently announced the addition of deduplication to ARCserve. Every time an ISV releases deduplication technology, I get inundated with questions about hardware (e.g. appliance-based) vs software (e.g. software-only where separate hardware is required) deduplication. In this post, I will discuss the difference between these two models when ...
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Friday, May 1st, 2009
As I have posted before, IBM/Diligent requires Fibre Channel drives due to the highly I/O intensive nature of their deduplication algorithm. I recently came across a situation that provides an interesting lesson and an important data point for anyone considering IBM/Diligent technology.
A customer was backing up about 25 TB ...
Posted in Backup, Deduplication, Virtual Tape | No Comments »
Friday, April 17th, 2009
One of the questions I often get asked is “how do your products compare to Data Domain’s?” In my opinion, we really don’t compare because we play in different market segments. Data Domain’s strength is in the low-end of the market, think SMB/SME while SEPATON plays in the ...
Posted in Backup, Deduplication, Restore | 4 Comments »
Wednesday, January 14th, 2009
SEPATON issued a press release on Monday that is worth mentioning here on the blog. SearchStorage also published a related article here. The release highlights MultiCare a SEPATON customer that uses DeltaStor deduplication software in a two-node VTL.
In the release, the customer characterizes their testing of solutions from ...
Posted in Deduplication, Virtual Tape | No Comments »