Hi. I was wondering if I am getting degraded performance because I am
using both IDE & SCSI disks in my software raid0 array, over the
performance I would get if I used only SCSI disks.
Here's the setup:
md0 : active raid0 sdb1 sda1 hda7 3084032 blocks 256k chunks
/dev/hda:
Model=WDC AC28400R, FwRev=17.01J17, SerialNo=WD-WM628
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs
FmtGapReq }
RawCHS=16383/16/63, TrkSize=57600, SectSize=600, ECCbytes=40
BuffType=3(DualPortCache), BuffSize=512kB, MaxMultSect=16, MultSect=off
DblWordIO=no, maxPIO=2(fast), DMA=yes, maxDMA=0(slow)
CurCHS=1027/255/63, CurSects=-66060037, LBA=yes, LBAsects=16514064
tDMA={min:120,rec:120}, DMA modes: mword0 mword1 mword2
IORDY=on/off, tPIO={min:160,w/IORDY:120}, PIO modes: mode3 mode4
(5400 RPM, 512k buffer)
Vendor: Quantum Model: VP32210 Rev: HP03
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
(5400 RPM, 1024k buffer, Fast SCSI-2)
Vendor: SEAGATE Model: ST11200N ST31230 Rev: 0660
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
(5400 RPM, 256k buffer, Fast SCSI-2)
scsi0: Target 0: Queue Depth 28, Synchronous at 10.0 MB/sec, offset 15
scsi0: Target 1: Queue Depth 28, Synchronous at 10.0 MB/sec, offset 15
Thanks.
Rob
