how to autoinstall RAID spares disks ?

Hi list, I need to install 4 RAID disks and 1 SPARE disk (backup disk) using autoinstall, but I don't know how ... My /etc/raidtab wil have to be like this: raiddev /dev/md0 raid-level 5 nr-raid-disks 4 ----> nr-spare-disks 1 persistent-superblock 1 parity-algorithm left-asymmetric chunk-size 128 device /dev/sda5 raid-disk 0 device /dev/sdb5 raid-disk 1 device /dev/sdc5 raid-disk 2 device /dev/sdd5 raid-disk 3 ---> device /dev/sde5 ---> spare-disk 0 raiddev /dev/md1 raid-level 5 nr-raid-disks 4 ----> nr-spare-disks 1 persistent-superblock 1 parity-algorithm left-asymmetric chunk-size 128 device /dev/sda5 raid-disk 0 device /dev/sdb5 raid-disk 1 device /dev/sdc5 raid-disk 2 device /dev/sdd5 raid-disk 3 ---> device /dev/sde5 ---> spare-disk 1 etc... I try to modify spareraid like this: <drive> <device>/dev/sde</device> ... snip... <partition> <format config:type="boolean">false</format> 253 5 -----> /dev/md0 -----> spare <size>30G</size> </partition> <partition> <format config:type="boolean">false</format> 253 6 ----> /dev/md1 ----> spare <size>21G</size> </partition> etc.. But don't work... I'm using SLES9 (whith service pack2) and Suse Linux 10 How can I configure this??? (sorry by bad english)