On May 28, 2008, at 05:11, James Andrewartha wrote:
> From what I can tell, all the vendors are only making SAS
> controllers for
> PCIe with more than 4 ports. Since SAS supports SATA, I guess they
> don't see
> much point in doing SATA-only controllers.
> For example, the LSI SAS3081E-R is $260 for 8 SAS ports on 8x PCIe,
> which is
> somewhat more expensive than the almost equivalent PCI-X LSI
> which is as low as $180.
That's not a huge price difference when building a server - thanks
for the pointer. Are there any 'gotchas' the list can offer when
using a SAS card with SATA drives? I've been told that SATA drives
can have a lower MTBF than SAS drives (by a guy working QA for
BigDriveCo), but ZFS helps keep the I in RAID.
> For those downthread looking for full RAID controllers with battery
> RAM, Areca (who formerly specialised in SATA controlers) now do SAS
> RAID at
> reasonable prices, and have Solaris drivers.
I've seen posts about misery with the sil and marvell drivers from
about a year ago; is there a good way to pound an opensolaris driver
to find its holes, in a ZFS context? On one hand I'd guess it
shouldn't be too hard to simulate different kinds of loads, but on
the other hand, if that were easy, the drivers' authors would have
done that before unleashing buggy code on the masses.
Bill McGonigle, Owner Work: 603.448.4440
BFC Computing, LLC Home: 603.448.1668
bill@xxxxxxxxxxxxxxxx Cell: 603.252.2606
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