Re: high throughput storage server?

Keld Jørn Simonsen put forth on 2/16/2011 6:00 PM:

On Wed, Feb 16, 2011 at 05:32:58PM -0600, Stan Hoeppner wrote:

quoted

David Brown put forth on 2/15/2011 7:39 AM:

RAID level space/cost efficiency from a TCO standpoint is largely irrelevant
today due to the low price of mech drives.  Using the SATABeast as an example,
the cost per TB of a 20TB RAID 10 is roughly $1600/TB and a 20TB RAID 6 is about
$1200/TB.  Given all the advantages of RAID 10 over RAID 6 the 33% premium is
more than worth it.

I assume that you with 20 TB mean the payload space in both places, that
is for the Linux MD RAID10 you actually have 40 TB of raw disk space.
With the Linux MD raid10 solution you furthermore can enjoy an almost
double up of the IO reading speed, involving 20 * 2 TB spindles compared
to 12 * 2 TB spindles.

Enterprise solutions don't use Linux mdraid.  The RAID function is built into
the SAN controller.  My TCO figures were based on a single controller SATABeast,
42x1TB drives in the RAID 10, and 24x1TB drives in the RAID 6, each
configuration including two spares.

-- 
Stan
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