Operation failed in OpenManage Array manager

Hi

I've just replaced my 3x18GB drives with 3x36GB driver in Dell PowerEdge 2400 Perc2/Si controller.Everything seemed to go well and when i rescanned my controller for changes it discovered that the disk had been replaced with disk with larger capacity. When I try to reconfigure my virtual disks to use the unallocated disk space I get a "operation failed" message. Same problem if I try to create a new virtual disk to use the unallocated disk space.

Then i i tried to install one of the old 18GB drive again and create a new virtual disk with the unallocated disk space from this disk and i got the same message "Operation failed"

can anyone help me please!!!!