On Fri, Jul 25, 2003 at 01:12:51PM +0300, Martti Kuparinen wrote:
  | Hi!
  | 
  | I have Adaptec 2400A RAID card on my server and the performance seems to
  | be really bad compared to standalone disk and raidframe. All redundant
  | filesystems below are RAID-1 with two 7200 rpm UDMA100 disks on separate
  | channels, both acting as masters. 2400A has the latest firmware and I see no
  | errors on the console or logs.

That's a known problem with the cards ...
They seem to be limited to ~ 10MB/s in RAID-0/1/5.
I suspect it's due to inefficently written firmware.

Luke.