Dell PowerVault 770N (Deskside NAS Appliance) - Manual (Page 3)

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Problem:
When using the NAS Manager Volumes page to expand a virtual disk that contains 30 or more
array disks, an error message reports that the RAID controller is not supported and that the disk
is currently reconstructing.
Cause:
The Volumes page does not support expansion of a virtual disk that contains 30 or more array disks.
Solution:
Do not use the Volumes page to expand a virtual disk that contains 30 or more array disks. You
can use Dell OpenManage™ Array Manager to expand the virtual disk to a maximum of 32 array disks.
The actual number of disks depends on the RAID controller.
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Size Requirement for Array Disks in a Virtual Disk
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Problem:
When trying to expand a virtual disk with a disk that is too small, the NAS Manager Volumes page
reports that the virtual disk is currently reconstructing.
Cause:
The Volumes page does not allow expansion using a disk that does not have the necessary capacity
to join a particular array. However, instead of reporting an error, it will erroneously report a success message.
Solution:
Use an array disk that is at least the size of the smallest array disk in the virtual disk.
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Unknown Volume Status in RAID 5 Arrays
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Problem:
When creating a RAID 5 array on a 775N system, the NAS Manager Volumes reports the
status of the volume as Unknown.
Cause:
The disk is being resynched. The Volumes page displays the state as Unknown until the disk
is fully resynched
Solution:
Wait until the volume operation is complete to ensure failure redundancy. Although the disk is
available for use right after creation, it does not become redundant until the volume is fully resynched.
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Deleting Expanded Volumes
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Problem:
The NAS Manager Volumes page won’t let me delete a volume that has been expanded.