> alice# ccdconfig -g
> ccd0            125     0       /dev/sd0b /dev/sd1b
                 ^^^^^
Multiple of your filesystem's block size may be better - e.g. 64 or 128 .

> > dmesg output would help, but your numbers aren't too bad IMHO
> 
> ahc0 at pci0 dev 12 function 0
> ahc0: interrupting at irq 9
> ahc0: Using left over BIOS settings
> ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs
> scsibus0 at ahc0 channel 0: 16 targets
> ahc0: target 0 using 16Bit transfers
> ahc0: target 0 synchronous at 10.0MHz, offset = 0x8
                                ^^^^^^^
IBM DDRS-34560W disks should be able to use "ultra" (20Mhz) rate,
check your BIOS settings and/or upgrade your kernel.

> sd0 at scsibus0 targ 0 lun 0: <IBM, DDRS-34560W, S97B> SCSI2 0/direct fixed
> sd0: 4357MB, 8387 cyl, 5 head, 212 sec, 512 bytes/sect x 8925000 sectors
> ahc0: target 1 using 16Bit transfers
> ahc0: target 1 synchronous at 10.0MHz, offset = 0x8
> sd1 at scsibus0 targ 1 lun 0: <IBM, DDRS-34560W, S97B> SCSI2 0/direct fixed
> sd1: 4357MB, 8387 cyl, 5 head, 212 sec, 512 bytes/sect x 8925000 sectors


-- 
Zdenek Salvet                                              salvet@ics.muni.cz 
Ustav vypocetni techniky Masarykovy univerzity, Brno
tel.: ++420-5-41 512 257                           Fax: ++420-5-41 212 747
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           If God had meant for us to be in the Army,
         we would have been born with green, baggy skin.