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Who's Afraid of Next Generation Deduplication Architectures?

Posted by Marc Crespi on Tue, Jun 02, 2009 @ 10:37 AM
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One of the things that continues to trouble me about how vendors use their blogs is that they often degrade into nothing more than competitive mud-slinging.  Don't get me wrong, vendor blogs are perfectly good vehicles to put factual information about your product out there and to compare and contrast it to other approaches.  However, it seems that the factual product content continues to decline while the rumor, innuendo, and FUD continues to rise.  I cite Rich Colbert's recent blog entry over at Data Domain's Dedupe Matters as a prime example.  Given ExaGrid's message to the market of having a next generation architecture for disk-based backup with data deduplication, I do not think it is a stretch to assume he was referring to ExaGrid in his tantrum.

While I plan to briefly respond to some of his points, I will quickly get back to information regarding the ExaGrid product as I think that is the source of the clear frustration Rich is feeling about the challenge by a vendor he will not name.

Rich's first premise is that if you were not first to market, you are "late" or "disorganized" and can never hope to rival the first market mover's technology or adoption.  Thankfully, there are many examples of why this assertion is inaccurate.  Just ask some of the other late and disorganized companies such as DELL, Microsoft, or even Sun Microsystems, none of who were the first entrants into the markets they ultimately dominated.  And while not all of their current fortunes are bright, there is no question they entered markets with already coronated leaders and figured out what they missed and exploited it to great success.  And there have been first entrants that have withered as times change.  Anyone remember Novell?

On another point, contrary to Rich's implication that only Data Domain is established in this market, ExaGrid now has close to 400 customers in its portfolio with over 2,000 installed systems across a wide variety of verticals. We continue to have record quarter after record quarter, even in this tough climate. 

And, our customers love us.  In fact, more than 110 of our customers demonstrated their satisfaction by having their deduplication success with ExaGrid documented with their names and titles. This is more customer success stories than all other vendors in our space combined, including Data Domain.

While Rich's current employer can cite more customers than ExaGrid due to being the first entrant, there certainly is no question that ExaGrid's technology has been validated by the market and is responsible for our rapid growth and greater than 70% competitive win rate.

But with all of that said, IT buyers need information about products not random musings by vendors.   We as vendors need to simply put our products forward so that customers can decide which one better meets their requirements.  On the product front, ExaGrid brings the following unique things to this market that were not present in first generation approaches:

  • Scalability - our GRID based architecture maintains a customer's backup window and restore performance as their data grows and avoids fork lift upgrades when you reach a system's capacity.
  • Backup/Restore performance - our post-process architecture provides for faster backups (maximum of 5 TB/hour) and optimized restores and tape copies of most recent data by eliminating deduplication overhead.
    • Contrary to assertions by exclusively in-line vendors, it is meaningless to compare restore rates for deduplicated data.  If 95% of the time restores will come from the most recent backup which is in non-deduplicated form with ExaGrid , then what is the point?
    • Suggesting that it is important to compare restores from deduplicated data is like saying an airline with a 5% on-time arrival record is equal to one with a 95% on-time record because the better airline is also late 5% of the time.
  • Unified management - ExaGrid's management interface places an entire multi-site installation in a single web interface for all configuration and management reducing management time and complexity.
  • Backup job aware reporting - ExaGrid uniquely can provide deduplication ratios and replication status by backup job so that users can really maximize their space savings and understand exactly which backup jobs are ready for restore at a DR location.

I wonder if it is the above differences that made Rich afraid to "help our organic search results" by mentioning us by name?  If a company is as invincible as he made Data Domain sound, why be afraid your prospective customers will find a later to market company making wild claims such as a markedly better approach?

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How fast can a disk-backup system go?

Posted by Bill Andrews on Tue, Nov 11, 2008 @ 12:55 PM
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How fast can a disk-backup system go?

Surprisingly enough this is the wrong question.

The real question is how fast can your backup environment go?

Well over 90% of the time the backup environment is sending data slower than the disk-based backup product is designed to perfom. The bottleneck is more often your environment.

So you buy a disk-based backup system rated at 100meg and you implement it and get 50meg.

That is almost always because the backup server or environment is the bottleneck.

So how do you tell if your environment is the bottleneck or the disk-based backup product is the bottleneck?

The trick is to take your existing backup environment and write directly to good old-fashioned straight disk. Measure the performance. That performance is the benchmark. If the disk-based backup products perform faster, when it comes time to implement, you will not see the rated speed of the disk-based backup product because it can only run at the speed at which your backup environment is feeding it.

What could be slowing the backup environment down?

  • Configuration of agents
  • Configuration of backup servers and media servers
  • Bandwidth
  • NIC cards
  • The server that the backup application is running on

All of these slow down the backups.

Run the test to straight disk to know the performance of your environment and then you can see if the disk-based backup system slows that down or not.

In short...know the performance of your environment before you throw the baby out with the bath water.

Bill Andrews is President and CEO of ExaGrid Systems a company that provides fast, low cost and scalable disk-based backup with data de-duplication solutions.

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