array not rebuilding

[phillbl1]

Hi,

I have a bl320 blade with a 5i controller. two disks are configured as raid 1+0. One drive has failed.

i hve replace the drive but the issue is that it is not rebuilding. When i look at the array in ACU it show the array (array A) and then two disks under the array. One of the disk has a + sign on the disk and the other is not shown. Instead it says Unused space,???

The new drive that i have put into the blade shows up as an unassigned drive! i need to add this to the array.

Anybody got any ideas

Thanks