Re: [Veritas-bu] Quantum's DXi Series of Dedupe Appliances

Our understanding is that the initial image goes to cache (ssd) then is compressed to permanent storage (RAID6). Subsequent backups are block deduped from that original compressed copy. This is similar to the way it worked with Data Domain except they do it inline on the fly. That is to say it seems you’re thinking that DXi always has a full size copy of your original image but I don’t believe that to be the case any more than it is with Data Domain.

From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Robin Small
Sent: Monday, February 14, 2011 11:06 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Quantum's DXi Series of Dedupe Appliances

On the Quantum,

When we were looking at it a while back, I understood that for each client you threw at it, it would store a non-deduped initial “base” image of that client and dedupe around it, as opposed to deduping everything including base images and incrementals.

Is that still the case?

~ Robin

From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Lightner, Jeff
Sent: Monday, February 14, 2011 6:03 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Quantum's DXi Series of Dedupe Appliances

We have run the DD460 and DD690 (and continue to run the latter). Back in November we got the DXi 6500 to replace our two DD460s.

Performance wise I really like the Data Domain products – they do the compression they promise. So far I’ve seen nothing with the DXi 6500 that leads me to believe it isn’t just as good. We use it for our main Production (4 TB) DB and other large backups. The PROD backup is finishing in a window shorter than it did on the DD690. We went to the Quantum stuff as part of a big data center move that gave us better pricing for the DXi than we would have gotten on a DD not for any technical issues with the DD itself.

Proud partner. Susan G. Komen for the Cure.

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