Dell PowerEdge 2900 RAID Configuration

We have a Dell PE2900 Running 8 drives, split into 2 logical drives:

Disk 1 & 2 were configured as RAID1
Disk 3,4,5,6,7,8 are configured as RAID5

They were both working fine, but one of the disks in the RAID1 array died - we replaced that, and since then its not been working properly - the dell server admin is showing the virtual disk as "degraded" - looking at the disk status it appears all of the drives apart from disk 2 are active - but disk 2 is "ready"

    Physical Disk 0:0:0 Online
 
    Physical Disk 0:0:1 Ready
 
    Physical Disk 0:0:2 Online
 
    Physical Disk 0:0:3 Online


When I open the virtual disk to view the detail, it shows:

Physical Disk 0:0:0 Online

but disk 2 (0:0:1) doesn't even appear.

Is there any way this can be fixed, besides backing up the data, deleting the vdisk and recreating a new one with the 2 disks included?

Thanks