Re: hardware RAID sunit and swidth values?

[Robert Sander <ml-linux-xfs@xxxxxxxxxxxxxxx>]

On Fri, 11 Apr 2003 16:28:25 +0000 (UTC),
 Joshua Baker-LePain <jlb17@xxxxxxxx> wrote:
> Actually this is incorrect, you need
> 
>         -d sunit=64,swidth=448
> 
> The sunit is the amount of data on each disk in 512 byte chunks, the swidth
> is the total amount of data before we go back to the first disk again. You
> have 8 disks in raid5 so 7 data disks and a parity disk. You need 7 * 64 
> as the stripe width.

So swidth is dependent of the total number of disks in the RAID?

What if there are two or more partitions on the SCSI device the hardware
RAID controller shows to the OS?

What are the options for swidth in this case?

Greetings
-- 
Robert Sander
Manager
Information Systems        www.epigenomics.com        Kastanienallee 24
+493024345330                                              10435 Berlin