Our HP Proliant ML150 is configured as RAID in the BIOS, and created a "Logical drive" (using two 250GB HD) as RAID 1+0.
The procedure seems to be Ok.
However, when installing the OS (Ubuntu 10.10) the partitioner utility still shows our two HD
I was expecting to see only one drive, since the two HD are RAIDed.
Is there a special step missing (checked again at boot, the RAID logical drive is still alive)?
edit It seems Ubuntu does not recognize the logical RAID drive.
edit2 RAID 1+0 is possible with two disks. See this Wikipedia page.
RAID 1+0: mirrored sets in a striped set (minimum two disks but more commonly four disks to take advantage of speed benefits; even number of disks)