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Chapter 11 Drive Replacement and Troubleshooting
Chapter 11 Drive Replacement and
Troubleshooting
Replacing a Defective Drive
Drive replacement procedures will vary depending on what RAID mode is configured for the TeraStation. Refer to
the replacement procedure in the following sections corresponding to the configured RAID mode. The following
drive replacement examples use the case of the TS3410DN, TS3420DN, and TS3420DS TeraStation models.
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.
1
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.
• If using the TS3420DS or TS3420RS TeraStation models, use a Buffalo OP-HD-2Y series drive as the replacement
drive. Use a Buffalo OP-HDN series drive as the replacement drive for other series TeraStations. 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.
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