On Mon, Jan 20, 2014 at 1:23 PM, grant <[email protected]> wrote:

> I’ve got a HWRAID with 10 NL-SAS HDDs.

If it is HW RAID6 with 10 total drives, then the aggregrate write
throughput to the HDDs is about 25% ( 10 / 8 - 1 ) higher than the
write throughput that fio measures as going into the HW RAID device.

So you'd be looking at about 266MB/s per drive. Which seems unlikely.
I wonder if your HW RAID has a large cache. Did you let the fio job
run for the full 10 minutes? Because I would expect the cache to fill
well before 10 minutes, unless the cache is huge.
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