Re: 3Ware 9500S-12 RAID controller -- poor performance

[Dr. David Alan Gilbert]

* subbie subbie (subbie_subbie@xxxxxxxxx) wrote:
> OK,
> 
> I now dumped RAID5 and am running all of my 12 disks
> separately each partitioned with XFS.
>
> 
> I did a very crude test of reading a single 1GB file
> from each of my disks in parallel by putting 12 dd
> processes into the background. Each file was read at
> approximately 35MB/s giving an aggragate of a little
> over 400MB/s.   According to 3Ware support, 400MB/s is
> the "theoretical maximum" of this controller.  I'm
> very happy with these results.

Nice.  Have you tried Software RAID5 on top of that?
I would be very interested to know how software RAID5
goes relative to the 3Ware hardware.


Dave
--
 -----Open up your eyes, open up your mind, open up your code -------   
/ Dr. David Alan Gilbert    | Running GNU/Linux on Alpha,68K| Happy  \ 
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