Subject: Re: PCI Raid controllers
To: Mark Randelhoff <firstname.lastname@example.org>
From: Chuck Swiger <email@example.com>
Date: 07/15/2004 13:55:55
Mark Randelhoff wrote:
[ ... ]
> The expected data rates are quite low. It would be a predominantly write
> system at perhaps 3M bytes a second (lets say worst case 5M a second)
> with the occasional requirement to read - perhaps 1M a second while the
> writing continues. I am not presently using a PCI-X motherboard but it
> is likely that we will move in that direction by the end of the year.
Please be aware that RAID-5 is best suited for read-only and read-mostly
volumes. RAID-5 is not well-suited for write-mostly volumes, although your
expected transaction rates seem to be low enough that you ought to be OK.
RAID-10 might be a better choice.