RAID Controller for SATA drives

[Nigel J. Terry]

Les Mikesell wrote:
> On Sat, 2006-06-24 at 16:33, Saqib Ali wrote:
>   
>>> Why don't you want SW raid? I find it more reliable than using a 7006-2,
>>> which I bought btw..
>>>       
>> I come from a SCSI background, and have a perception that software
>> RAIDS are slow....
>>     
>
> RAID5 has some CPU overhead.  RAID1 has next to none with
> reasonable hardware where you just issue the write twice and
> the controller and DMA does the work in parallel - and reads
> are only done once anyway.
>
>   
Try posting your question on the Linux Raid list 
linux-raid at vger.kernel.org. There are some very knowledgeable people re 
h/w and s/w raid there.