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February 28, 2007


Anil Gupta


Well written post on VMware. It is great that EMC recognizes the greater value Avamar offers to VMware unlike popular media who thought Legato will be major beneficiary.

IMO, Avamar de-dupe will take VMware to next level in deployment - Eliminating duplicate data from VMs on same PM, reducing data transfer inter-VM, inter-PM, between VMs and storage, memory capacity increase to VMs, VM memory load balancing.

I am sure both EMC and VMware are looking at numerous other ways to incorporate de-dupe. What about other EMC units? How do you see Avamar technology showing up in other products?

Just wonder, how Avamar transaction will play out after VMware spin-off financially?


Chuck Hollis

Hi Anil

I'm glad you see the connection between client-side de-dupe and server virtualized environments. It kind of hit us over the head like a ton of bricks.

Over time, I think you'll see dedupe concepts just about everywhere in the storage stack. It's kind of like security -- it belongs everywhere.

Now, I can't say specifically what capabilities you'll see where and when, but you're a smart guy, and I bet you can spot a few neat combinations that aren't that hard to do.

The bigger challenge is that any dedupe technology presents a different storage service level; specifically, writing into a dedupe space can be s-l-o-w if not handled appropriately.

Also, underlying data protection becomes an issue. Lose a block that's part of a dedupe set, and you'll find a neat hole in your data in all sorts of places.

I personally think the VMware spin-out is a unique situation. I'm no expert, but I don't think you'll see us (or anyone else) doing this sort of thing too often.

Look forward to more discussion on this -- and other -- topics!


Hi Chuck,

Thanks for your insightful blog on how things related to storage networking, DR solutions etc. need to adapt for virtualized environments which are spawning quite faster world over.I kinda get a sense that it's VMware who's changing the dynamics in the storage market.From the shelf of this server virtualization leader, the industry is awaiting for thier new Site Recovery Manager software which automates and does a checklist of all the criterias before a site-site fail over happens and ensure that failures during this process is reduced or bought to nil. Is EMC planning something similar for non-virtualized as well as virtualized environments? Isn't a site-site failover automation software like VMware SRM , a "must-have" in the product portfolio of a company(EMC) which is well-known in the industry for thier array based replication products?

Chuck Hollis

Hi Sundar -- yes and yes.

We're investing heavily in upcoming support for VMware's SRM -- we see it as a really big deal for our customers.

But, at the same time, there's certain aspects that VMware brings to the table in DR scenarios which just can't easily be done in the physical world -- for example, creating a "virtual failover environment" where you can test failover logic in a containerized environment, without impacting production.

Simply put, I don't think we'll ever make physical failover as elegant as what's possible in the virtual world -- although we'll certainly try!

The comments to this entry are closed.

Chuck Hollis

  • Chuck Hollis
    SVP, Oracle Converged Infrastructure Systems

    Chuck now works for Oracle, and is now deeply embroiled in IT infrastructure.

    Previously, he was with VMware for 2 years, and EMC for 18 years before that, most of them great.

    He enjoys speaking to customer and industry audiences about a variety of technology topics, and -- of course -- enjoys blogging.

    Chuck lives in Vero Beach, FL with his wife and four dogs when he's not traveling. In his spare time, Chuck is working on his second career as an aging rock musician.

    Warning: do not ever buy him a drink when there is a piano nearby.

    Note: these are my personal views, and aren't reviewed or approved by my employer.
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