Re: Exadata high capacity vs high prformance drives

From: David Fitzjarrell <>
Date: Fri, 22 Feb 2013 13:03:22 -0800 (PST)
Message-ID: <>

The client I support who just implemented Exadata went for the High Capacity drives.  Outside of the ERP app code (which isn't really written for RAC) the speed of those disks isn't a problem -- we get pretty speedy query times.  Given tha this customer has several multi-TB databases on each server I can't see how they could have gone with High Performance drives without having to add Expansion Cabinets. 

David Fitzjarrell

From: "Stephens, Chris" <> To: "''" <> Sent: Friday, February 22, 2013 1:47 PM
Subject: Exadata high capacity vs high prformance drives

After reading through a decent amount of information on Kevin Closson's site, it seems pretty convincing that there is a mismatch between the ability of Exadata's compute nodes to process data at the same rate that the storage nodes can serve up.  Obviously that is somewhat dependent on individual workloads. Given that, are sites tending to go with the high capacity drives in the storage nodes?

I know that is a very general question that might get a lot of 'it depends' answers but I'm trying to figure out how to decide between the two without actually knowing what the workload is going to be.  I'm just being asked to make a best guess at this point.

Thanks for any comments.


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-- Received on Fri Feb 22 2013 - 22:03:22 CET

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