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Can I use lots of disks?

Question asked by communityadmin on Jun 22, 2011
Latest reply on Jun 23, 2011 by Ted Dunning
Some folks are recommending a balanced server configuration such as the following:

 - 2 x 4 Core CPU
 - 24G RAM
 - 4 1TB SATA Disks

We normally have machines with 24 x 1T SATA and would like to move to 24 x 2T SATA drives.

Will Hadoop be able to drive these disks?  In our tests, we see lots of CPU being used, but are not seeing very high bandwidth.  Does this mean our programs are CPU bounded?

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