On 02/01/2011 23:04, Matt Garman wrote:
On Sun, Jan 2, 2011 at 3:11 PM, John Robinson
<john.robinson@xxxxxxxxxxxxxxxx> wrote:
Please could someone suggest a cheap PCI-E SATA card with 4 internal ports?
I currently have 6 motherboard SATA ports and a 5-drive hot-swap chassis, I
am thinking of adding a second 5-drive hot-swap chassis to my case and would
need another 4 SATA ports to drive it.
Other requirements: known to work with RHEL/CentOS 5 kernels, even if it
means installing a driver with DKMS or whatever.
You can also get a SAS card, and an overpriced mini-SAS to SATA cable.
The LSI SAS 1068e chip is quite common and well supported by Linux.
You can buy LSI-branded cards, or from another OEM that uses the same
chip. Intel makes such a card, and I just read that IBM does as well,
the ServeRAID BR10i LSI SAS3082E-R. Covered in detail here:
http://www.servethehome.com/ibm-serveraid-br10i-lsi-sas3082e-r-pciexpress-sas-raid-controller/
Such a card will actually give you a total of eight SATA ports, but
you obviously don't have to use them all; you can get away with only
buying one of the SAS to 4-SATA port fanout cables.
I grabbed two of those IBM BR10i cards off of ebay for about $50.
Unfortunately, I didn't pay close attention to the listing, and mine
came without PCI brackets. But so far I've tested one, and it works
just fine.
I've just had a look on eBay and the few there are don't have brackets
in their pictures. But still, this is definitely an option, looks like I
might be able to pick one up for about £50, which was pretty much the
most I really wanted to spend. More like £60 by the time I've got the
cable, but I would have another 4 spare SATA ports :-)
Doesn't have to be PCI-E x1 because I've a spare x8 (logical)/x16 (physical)
slot, but I don't know if anything cheap's going to be anything other than
PCI-E x1. v2.0 (5GT/s) would be nice though.
If you're using a typical consumer-grade motherboard, watch out that
the PCIe slot supports things other than video cards. For whatever
reason, particularly on micro-ATX boards, the PCIe x8/x16 slots often
won't work with anything other than video cards. Trying to use
something else (e.g. a RAID card) will, at best, prohibit the machine
from booting, or at worst, cause very subtle random problems.
It's an Asus P5Q Pro, Intel P45+ICH10R, a fairly boring basic
workstation grade (not gaming) full ATX motherboard, and if it doesn't
like having something other than a video card in its second x16 slot
I'll start screaming at Asus.
Thanks for your advice!
Cheers,
John.
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