Low Power motherboard with X4 or better PCI-e slot to use with a RAID controller

jas067

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Oct 12, 2015
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I'm looking for a low power motheroboard to use with an LSI Megaraid 9260 RAID controller in a backup server.

Since this server is only used for backup (Linux/backuppc) and as a file server, I'm looking for something with low idle power. I have an LSI Megaraid 9260 RAID controller, which needs an X4 or better PCI-e slot.

I've been using an old ASUS IMISR-VM, which has an X16 PCI-e (not sure of the actual signally, but, it is at least X4, because it works). I'm having stability problems with the system and would like to replace the CPU/motherboard/memory with all new stuff.

I have a Core-2 T9300 CPU and 4 GB of RAM in the IMISR-Vm. Idle power with with only the 2.5" boot drive is about 25 watts.

I purchased an ASROCK N3050M motherboard. It has two X1 PCI-e slots and one X16. Great, I thought. I got it all hooked up, and it the RAID controller is not recognized. After a little digging, I find out that the X16 slot is only X1 electrically. I guess the RAID controller won't fall back to X1 mode like some graphics cards will. I wouldn't want the performance reduction anyway.

Idle power on the N3050M with the 2.5" boot drive is about 12 watts, for a nice 13 W power savings! If I can find a similar board that will support my RAID controller, that'd be great!

Thank you,
Jay
 

jas067

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Oct 12, 2015
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4,510
I ended up selecting the Supermicro A1SRI-2558F, which is quad Rangeley-core Atom.
http://www.supermicro.com/products/motherboard/atom/x10/a1sri-2558f.cfm

I found one for $150 (a little more than half retail price) on eBay.

This is a server board designed for low-idle power. It does use ECC memory, so, the memory costs a little more.

I am using this for a server and want as high uptime as posisble, so, a server solution with ECC memory makes sense.

It has an X8 PCI-e slot for my RAID controller, quad gig-ethernet ports (I only need one for now, but, could potentially add some fancy routing with this server), 6 SATA ports, useful if I ever decide to use soft-RAID instead of the RAID controller, and has support for up to 64 GB of RAM.

So, with all those features, it should be pretty future proof.