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Chapter 11 Drive Replacement and Troubleshooting
LEDs
Drives on the TeraStation will have its status LED glow green during normal operation. If a drive fails, its error LED
will glow red.
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1
Error LED
Glows red if a drive has failed.
2
Status LEDs
The failed drive's status LED will be glowing a steady red. A drive with a red status LED is ready to hot-swap.
Notes
• Do not unplug a drive whose status LED is green instead of red. Dismount it first or shut down the TeraStation
before swapping a working drive. If you remove the drive without properly dismounting it, data may be lost and
the TeraStation may malfunction.
• Use a Buffalo OP-HDN series drive as the replacement drive. The replacement drive should be the same capacity
or larger as the original drive. If a larger drive is used, the extra space will not be usable in a RAID array.
• To avoid damaging the TeraStation with static electricity, ground yourself by touching something made of metal
before handling any sensitive electronic parts.
• After a drive is replaced, it will take about 30 minutes before normal file reading and writing operations are
restored. Settings may not be accessible during this period.
• Do not change the order of the drives on the TeraStation. For example, pulling out the drive in slot 1 and
replacing it with the drive in slot 2 may cause data to be corrupted or lost.
• If the LCD panel does not change after a new drive is installed, click Redetect Drive in Settings.
Drive Replacement for a Redundant RAID Array (TeraStation Is On)
If a drive used on a redundant RAID array fails, you need to recover the RAID array after replacing the defective drive
to a new drive. If a drive used as JBOD fails, you need to format the replaced drive after replacing the defective drive
to a new drive.
Follow the procedure below to recover the RAID array. If replacing multiple malfunctioning drives at once, refer to
the
"Drive Replacement for a Redundant RAID Array (TeraStation Is Off )"
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Back up the saved data to another location before replacing the failed drive. If one or more drives fail during
drive replacement, data can no longer be retrieved from the TeraStation.
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section.
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