Alan Hodgson wrote:
> On Thursday 14 September 2006 11:05, "Craig A. James"
> <cjames(at)modgraph-usa(dot)com> wrote:
>> I'm experiment with RAID, looking for an inexpensive way to boost
>> performance. I bought 4 Seagate 7200.9 120 GB SATA drives and two SIIG
>> dual-port SATA cards. (NB: I don't plan to run RAID 0 in production,
>> probably RAID 10, so no need to comment on the failure rate of RAID 0.)
>>
>
> Are those PCI cards? If yes, it's just a bus bandwidth limit.
Ok, that makes sense.
One SATA disk = 52 MB/sec
4-disk RAID0 = 106 MB/sec
PCI at 33 MHz x 32 bits (4 bytes) = 132 MB/sec.
I guess getting to 80% of the theoretical speed is as much as I should expect.
Thanks,
Craig