Dirk

I also tried Data Domain and was not impressed. I now use Diligent's
Protectier and its far more impressive. Its scalable, reasonably priced,
achieves throughput of 200mb per second and better and factoring ratio's
of 
Over 10 to 1

Regards

Jon 

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Dirk Kastens
Sent: 27 August 2007 08:31
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] Data Deduplication

Hi,

> Writing a de-dupe backup product isn't easy.  EMC bought Avamar and
> Symantec bought Data Center Technologies to get their respective
> products. I don't know of any other de-dupe companies for IBM to
> acquire, so they'll have to write their own.  That may take them a bit
> longer.

We're just testing a deduplication disk array from DataDomain with TSM.
The compression ratio is much less than promised by the sales people.
During the last 10 days of incremental backups we only achieved a ratio
of 2.6:1. The disk array is very expensive and for the money you can buy
more disks than you need without compression.

--
Regards,

Dirk Kastens
Universitaet Osnabrueck, Rechenzentrum (Computer Center)
Albrechtstr. 28, 49069 Osnabrueck, Germany
Tel.: +49-541-969-2347, FAX: -2470
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