[mythtv-users] Fastest RAID for HD?

[John Drescher]

On Feb 16, 2008 12:29 PM, Gerald Brandt <gbr at majentis.com> wrote:
> my system is an AMD 64 X2 3800+ with 2 GB RAM.
>
> I have 5 250 GB HDD in a software RAID5.  3 are on the local IDE control
> (yes, 2 drives share an IDE bus), and two are on an older Promise
> Controller.  This is what I get for speeds:
>
> mythbackend raid5 # dd if=/dev/zero of=testfile bs=1M count=16384
> 16384+0 records in
> 16384+0 records out
> 17179869184 bytes (17 GB) copied, 859.12 s, 20.0 MB/s
> mythbackend raid5 #
>
> Granted, the system is running a few virtual systems as well, but none of
> them hits the hard drive too hard.
>
You will get bad performance if any of the drive controllers are on a
regular PCI bus.

John