We're getting ready to roll out Data Domain NAS devices, which utilize 
de-duplication. During our proof of concept evaluation, we saw 
compression ratios as high as 80:1 after one week of Oracle database 
backups, average was around 40:1.


briandiven at northwesternmutual.com wrote:
> I am doing some VTL sizing analysis and have a question regarding the 
> common deduplication processes offered by various vendors.  The 
> vendors quote a 20:1 type compression rate due to 
> single-instance-store.  This makes sense for OS backups, but does this 
> apply to databases?
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-- 
===================================

   Steven L. Sesar
   Lead Operating Systems Programmer/Analyst
   UNIX Application Services R101
   The MITRE Corporation
   202 Burlington Road - MS K101
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   email: ssesar at mitre.org

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