Subject: Re: disk speed query
To: Manuel Bouyer <>
From: Patrick Welche <>
List: port-i386
Date: 05/12/2005 22:55:45
[lsi logic 53c1030 mpt0 reading at 4MB/s rather than 320MB/s]

On Wed, May 11, 2005 at 02:39:58PM +0200, Manuel Bouyer wrote:
> The next test would be to benchmark each disk individually on the same
> controller, to see if it's an issue with the mpt driver, or the raid
> stuff in the controller itself. But if the system is in use this may not be
> doable.

I don't seem to be able to find a way of decoupling those drives. The
card's firmware is MPT-BIOS-IM-5.07.02, which from the IM suggests that
it is the mirroring version, however

sd2 at scsibus2 target 0 lun 0: <LSILOGIC, RAID ARRAY    IS, 1000> disk fixed
sd2: 136 GB, 139712 cyl, 64 head, 32 sec, 512 bytes/sect x 286130176 sectors

is 2 x 73GB disks, so striped. I suppose it is possible that the disks
were set up by some Windows programme rather than that BIOS?

Have any of you had success with mpt(4) with such an array?