HW raid 0 setup

[Kevin Coyner <kevin@rustybear.com>]

I'm trying to setup a Raid0 using a SCSI LSI Raid controller card and 
four 9G SCSI drives.  The intent is to have two drives (sda and sdb),
both of which use Raid0. During POST I can get into the controller bios
and set it up for Raid0.  I then continue on with the normal boot
process, which yields the dmesg attached at the bottom of this email.

I'm trying to make sure I've got this set up correctly and I'm concerned
about the following 2 dmesg statements: 

SCSI device sda: 35094528 512-byte hdwr sectors (17968 MB)
SCSI device sdb: 35094528 512-byte hdwr sectors (17968 MB)

Is this correct?  Since I'm setting this up as Raid0, shouldn't sda and
sdb be half that size at 8984MB each?  Or is it typical of Raid0 to
report the combined size of the two drives it uses for striping?

Also, my lsmod shows ...

raid0                   3104   0  (unused)
md                     43840   0  [raid0]
megaraid               24896   3  (autoclean)

Since raid0 is going unused, I take it that I don't need it.

Thanks
Kevin

[edited output of lsmod follows]

SCSI subsystem driver Revision: 1.00
megaraid: v1.18 (Release Date: Thu Oct 11 15:02:53 EDT 2001)
megaraid: found 0x101e:0x9010:idx 0:bus 2:slot 11:func 0
scsi0 : Found a MegaRAID controller at 0xdc10, IRQ: 14
megaraid: [U.77:1.47] detected 2 logical drives
megaraid: channel[1] is raid.
megaraid: channel[2] is raid.
scsi0 : LSI Logic MegaRAID U.77 254 commands 16 targs 5 chans 7 luns
scsi0: scanning channel 0 for devices.
scsi0: scanning channel 1 for devices.
  Vendor: PLEXTOR   Model: CD-ROM PX-40TW    Rev: 1.04
  Type:   CD-ROM                             ANSI SCSI revision: 02
scsi0: scanning virtual channel 1 for logical drives.
  Vendor: MegaRAID  Model: LD0 RAID0 17136R  Rev: U.77
  Type:   Direct-Access                      ANSI SCSI revision: 02
  Vendor: MegaRAID  Model: LD1 RAID0 17136R  Rev: U.77
  Type:   Direct-Access                      ANSI SCSI revision: 02
scsi0: scanning virtual channel 2 for logical drives.
scsi0: scanning virtual channel 3 for logical drives.
scsi0: scanning virtual channel 4 for logical drives.
Attached scsi disk sda at scsi0, channel 2, id 0, lun 0
Attached scsi disk sdb at scsi0, channel 2, id 1, lun 0
SCSI device sda: 35094528 512-byte hdwr sectors (17968 MB)
Partition check:
 /dev/scsi/host0/bus2/target0/lun0: p1 p2
SCSI device sdb: 35094528 512-byte hdwr sectors (17968 MB)
 /dev/scsi/host0/bus2/target1/lun0: p1 p2
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: raid0 personality registered as nr 2

-- 

Kevin Coyner
mailto: kevin@rustybear.com
GnuPG key: 1024D/8CE11941