[mythtv-users] 8 Port SATA PCIx card

[Albert Graham]

On 07/20/2009 01:45 AM, David Brodbeck wrote:
> Marc Tousignant wrote:
>> I have 2 of the 9550's with infiniband connectors going to a a pair of
>> backplanes in a server.
>
> A caveat about the 9550s, speaking from personal experience:  These 
> cards do not support SATA II (300 MB/s) speeds, and auto-negotiation 
> does not always work properly.  If you use SATA II drives with these 
> cards you *must* jumper the drives so they're limited to 150 MB/s. 
> Otherwise you'll find drives are occasionally kicked out of the array 
> with "Drive Timeout" errors when it's under heavy I/O load.  There's 
> an article in the 3ware knowledge base that explains this, which I 
> unfortunately only found after I RMA'd three perfectly good drives. ;)
>
> On Western Digital hard disks the jumper position you want to close 
> for 150 MB/s is the one labeled "OPT1".  On newer drives this is 
> listed as "factory use only" but it still has the same function.
I agree, the 9550 has its problems and is really slow compared with the 
9650 - which is a complete re-design.