Re: Tim Gorman's "...Cost-Based Optimizer.doc"

  • From: Wolfgang Breitling <breitliw@xxxxxxxxxxxxx>
  • To: mgogala@xxxxxxxxxxxxxxxxxxxx
  • Date: Thu, 16 Jun 2005 12:22:07 -0600

I was told IBM's ESS (Shark) is capable of that too. Not sure if it 
really does.
It doesn't actually  require much "intelligence" (I'd say even less than 
Geraldo) to pre-fetch the next stripe size whenever full stripe size 
chunk requests are received.
Whether that is "smart" is a different question.

Mladen Gogala wrote:

> Now, that would only be possible if your SAN apparatus is more 
> intelligent then Geraldo Rivera. Not that it's very hard,
> but the only type of SAN device that can recognize patterns is EMC 
> Symmetrix (the very top of the line) and they are
> prohibitively expensive.


Wolfgang Breitling
Centrex Consulting Corporation

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