QNAP TVS-472XT 4-Bay NAS Enclosure - Manual (Page 79)

Action Description
Action > Safely Detach Stop all activity and safely unmount the enclosure
from the host NAS.
Action > Update Firmware Update the expansion unit's firmware.
Action > Rename Enclosure Rename the selected expansion unit.
RAID Group View details about each RAID group on the
expansion unit, including its RAID type, capacity, and
member disks.
Expansion Unit Automatic Recovery
If an expansion unit is accidentally disconnected from the NAS, for example by an unscheduled shutdown or
disconnected cable, then the following changes to storage state will occur:
• The status of all storage pools on the expansion unit will change to Error .
• The status of all RAID groups on the expansion unit will change to Not Active .
If you encounter this situation, reconnect the expansion unit to the NAS and QTS will automatically guide
you through the recovery process.
Expansion Unit Recovery
Go to Storage & Snapshots > Storage > Disks/VJBOD , select an expansion unit, and then click Recover to
perform one of the following actions.
Action Description
Reinitialize enclosure ID Reset all expansion unit IDs, and then give each unit
a new ID number starting from 1 based on the order
than they are physically connected.
Tip
Use this action if the expansion unit IDs
appear out of sequential order in the
enclosure list.
Attach and Recover Storage Pool Scan all free disks on the NAS and all connected
expansion units for existing volumes, LUNs, and
storage pools.
Tip
Perform this action after moving disks
between NAS devices.
QNAP External RAID Devices
About QNAP External RAID Devices
QNAP External RAID devices are a series of expansion units designed to increase the storage capacity of
your NAS or computer. External RAID devices are different from other QNAP expansion units in that they
feature hardware RAID. A host can either access the disks in an external RAID individually, or the external
RAID device can combine the disks using hardware RAID so that the host accesses them as one large disk.
Some external RAID devices have hardware switches for storage configuration, while other models can only
be configured through a software interface.
QTS 4.4.x User Guide
Storage & Snapshots 78