mirror

[Mad Unix]

am looking to mirror my internal disk to another disk located on the
machine
test at linuxppc:~> df -kh
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda3             131G  8.4G  116G   7% /
/dev/sda2              31M  8.9M   20M  31% /boot
none                  930M     0  930M   0% /dev/shm

my dmesg
----//-------------------
SCSI subsystem initialized
ipr: IBM Power RAID SCSI Device Driver version: 2.0.11.2 (January 24, 2006)
ipr 0000:d0:01.0: Found IOA with IRQ: 325
ipr 0000:d0:01.0: Starting IOA initialization sequence.
ipr 0000:d0:01.0: Adapter firmware version: 0510005E
ipr 0000:d0:01.0: IOA initialized.
scsi0 : IBM 573E Storage Adapter
  Vendor: IBM   H0  Model: HUS151414VL3800   Rev: S430
  Type:   Direct-Access                      ANSI SCSI revision: 04
SCSI device sda: 286748000 512-byte hdwr sectors (146815 MB)
SCSI device sda: drive cache: write through
SCSI device sda: 286748000 512-byte hdwr sectors (146815 MB)
SCSI device sda: drive cache: write through
 sda: sda1 sda2 sda3 sda4 < sda5 >
Attached scsi disk sda at scsi0, channel 1, id 5, lun 0
  Vendor: IBM       Model: VSBPD4E2  U4SCSI  Rev: 7217
  Type:   Enclosure                          ANSI SCSI revision: 02
scsi: unknown device type 31
  Vendor: IBM       Model: 573E001           Rev: 0150
  Type:   Unknown                            ANSI SCSI revision: 00
----------------------//-----

How would you do the mirror?
-- 
madunix