Extended RAID Disk Not Showing Extra Capacity in Storage Pool Physical Disks

Hi,

I added a RAID 5 Disk (3 * 4TB = 7.28TB usable) from a Dell Poweredge R720 server to my storage pool named "Backups".

The Physical disk was nearly full so I extended the RAID disk using Dell Server Administrator by adding another physical disk to the RAID array (4 * 4TB = 10.91TB usable).

However, in the Storage Pool GUI in Server 2012 SP1 the Physical Disk still only shows as 7.28TB even though the disk is actually 10.91TB.

Can anyone explain how I can extend the capacity of the physical disk in Storage Spaces to match the actual size of the now extended physical RAID disk? I have tried rebooting and refreshing but it doesn't update the new size.

When I look in the orginal disk management tool I can see the RAID disk listed at the correct 10.91TB.

Also when I use powershell I get the following:

PS C:\Windows\system32> Get-PhysicalDisk

FriendlyName        CanPool             OperationalStatus   HealthStatus        Usage                             Size
------------        -------             -----------------   ------------        -----                             ----
PhysicalDisk2       False               OK                  Healthy             Auto-Select                    7.28 TB
PhysicalDisk0       False               OK                  Healthy             Auto-Select                  278.88 GB
PhysicalDisk1       False               OK                  Healthy             Auto-Select                   14.55 TB


PS C:\Windows\system32> get-disk

Number Friendly Name                            OperationalStatus                    Total Size Partition Style
------ -------------                            -----------------                    ---------- ---------------
0      DELL PERC H710P SCSI Disk Device         Online                                278.88 GB GPT
2      DELL PERC H710P SCSI Disk Device         Online                                 10.91 TB GPT
3      Microsoft Storage Space Device           Online                                    11 TB GPT
4      iDRAC Virtual Floppy USB Device          No Media                                    0 B RAW


PS C:\Windows\system32> get-storagepool

FriendlyName            OperationalStatus       HealthStatus            IsPrimordial            IsReadOnly
------------            -----------------       ------------            ------------            ----------
BACKUPS                 OK                      Healthy                 False                  False
Primordial              OK                      Healthy                 True                   False

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