PLANET UMG-2000 - Manual (Page 103)

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Appendix B - Hard Disk Hot Plug
The UMG-2000 Series supports the SATA hot plug. The hot plug allows the administrator to
replace the faulty device with a new one with the same model at the running time rather
than rebooting the system.
Before Unplug
If one of the SATA devices is faulty, the panel will show the faulty device by alerting the
administrator with a corresponding SATA LED red. The next figure shows the mapping of
the four devices and their LED. The administrator can also get the exact indication in the
page “System Overview”. Before unplugging the faulty device, make sure of the model and
the raw capacity of the device. We strongly recommend that the device with the same
model should be chosen to replace the faulty one. If it is impossible, get the device which
has a larger raw capacity.
Note:
Make sure the storage RAID configuration is RAID5 or RAID 0/1.
Unplug Disk
When unplugging the faulty device, do NOT unplug/plug any disks when rebooting. The
alert LED will flash if any one disk is unplugged and do NOT take any actions while the alert
LED is flashing. After a short period of time, the alert LED will be turned off and you can
take the next step. If the alert LED does not flash, plug in the new one and reboot.
Note:
Make sure you unplug the correct damaged-hard disk. The damaged hard disk can be
found by observing the UMG front panel disk LED. A Flushing RED led indicates the faulty
disk.
Insert a New Disk (Hot-Plug)
After the alert LED is turned off, you can plug in the new hard disk. Then the alert LED will
flash again. Please do not insert or remove any disks while the LED is flashing. After
plugging the new devices into the disk bay, the RAID will rebuilt corrupted data
automatically. The data repair duration may be vary depend upon the size of the storage
disk. For example, the hard disk capacity of 160GBytes may take 45 minutes to repair;
while the hard disk capacity of 1TBytes will take approximately 8 hours to repair the
damaged data.