(Create the mirror)
# metainit -f d10 1 1 c0t0d0s0
d11: Concat/Stripe is setup
# metainit -f d20 1 1 c2t2d0s0
d12: Concat/Stripe is setup
# metainit d0 -m d10
d10: Mirror is setup
# metaroot d0
# lockfs -fa
 
(Reboot the node)
# scswitch -S -h phys-schost-1
# shutdown -g0 -y -i6
 
(Attach the second submirror)
# metattach d0 d20
d0: Submirror d20 is attached
 
(Enable the localonly property of the mirrored disk's
raw disk device group)
# scconf -c -D name=dsk/d2,localonly=true
 
(Record the alternate boot path)
# ls -l /dev/rdsk/c2t2d0s0
lrwxrwxrwx  1 
root     root          57 Apr 25 20:11 
/dev/rdsk/c2t2d0s0 -> 
../../devices/node@1/pci@1f,0/pci@1/scsi@3,1/disk@2,0:a,raw