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RE: Solid State Disks for Databases

From: Goulet, Dick <>
Date: Tue, 27 Sep 2005 15:35:08 -0400
Message-ID: <>

Ugh Apple. The dinosaur that died, but forgot to fall. Steve Jobs & Apple was a nice company, until they got greedy with the Mac's. Seems Steve took lessons from Uncle Billy.

From: Kennedy, Jim [] Sent: Tuesday, September 27, 2005 3:27 PM To:; Goulet, Dick Cc:; Oracle-L
Subject: RE: Solid State Disks for Databases


At Open World I attended a fasinating presentation on running 10G on an Apple Cluster. (I call it an Orchard, since it is a server farm.... I can hear the groans from here.) Very reliable, very fast, and inexpensive.(and unix underneath) It seems that Apple has engineered this thing to do high volume IO for video editing. Hmm, that actually might be effective for datawarehousing. Might be something to look into. (no I don't sell Apple equipment.) Jim

[] On Behalf Of Niall Litchfield Sent: Tuesday, September 27, 2005 11:53 AM To:
Cc:; Oracle-L
Subject: Re: Solid State Disks for Databases

On 9/27/05, Goulet, Dick <> wrote:


                Yes they appear to be much faster than normal disks, but they

        are also substantially, like a factor of 3 or 4 times, more expensive as

        well. We use EMC Symetrix systems and right now we can get 72GB mirrored

        for about $5,000. Soliddata's E75 is roughly the same price and only

        has 2GB of space.         

See Cary's excellent, as usual, post on not spending money where it makes almost no difference.

Where I suspect a number of systems may benefit is in alleviating the redo bottleneck. (This is of course detectable by looking in the right place). redo is often a bottleneck on heavy transactional systems (especially those that have more transactions than they should, and ssd for redo and maybe archives *might* help.

ps. $5000 for 72gb seems to come from a vendor that sells Redundant Arrays of Inordinately expensive Disks. Is the performance and reliability really better than say ?

Niall Litchfield
Oracle DBA 

Received on Tue Sep 27 2005 - 14:37:17 CDT

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