NEC Storage ST1220, User Manual

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Disk Drive LEDs
Each hard disk drive features Status and Power LEDs.
„
Disk Status LED
The Disk Status LED lights green if the disk operates normally.
The Disk Status LED lights red if a drive error is detected.
The Disk Status LED remains off if there is no disk drive in the bay.
NOTE:
In RAID configurations (except RAID 0), the
system can operate if a single hard disk drive is defective.
However, we recommended you replace the defective disk
drive as soon as possible in order to rebuild the data.
(Hard disk drives can be hot-swapped.)
When replacing a defective hard disk drive in a disk array configuration, the data is automatically
rebuilt (auto rebuild function). Refer to the User’s Manual that comes with the NEC Express
server or the User’s Guide that comes with the disk array controller for the disk data recovery
procedure.
IMPORTANT:
„ Do not power off the Disk Expansion Unit using the power switch
during a rebuild.
„ When replacing a hard disk drive from the Disk Expansion Unit,
remove the defective one, and wait at least 90 seconds before
installing a new hard disk.
„
Disk Power LED
The Disk Power LED lights green when the hard disk drive is operating normally.
The Disk Power LED blinks green when the disk drive is being accessed.