Subject: Re: disk speed query
To: Patrick Welche <>
From: Hauke Fath <>
List: port-i386
Date: 05/13/2005 11:17:35
Am 12.05.2005 um 22:55 Uhr +0100 schrieb Patrick Welche:
>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.

That's RAID 0, then - striped, not mirrored.

>  I suppose it is possible that the disks
>were set up by some Windows programme rather than that BIOS?

Unlikely, as the controller presents the two disks as one to the OS 
(NetBSD above).

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

Not really -- see PR kern/26825.

FWIW, we've replaced the mpt in one of the machines with a 
single-channel megaraid (amr(4)), and the box (web- & mailserver) has 
been running fine since.


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