Buffalo TeraStation - Adding an External Hard Drive; Connect an External Drive

TeraStation User Manual 26
Conguring a Hot Spare
If you have 3 drives in a RAID 5 array, or 2 drives in a RAID 1 array, then you can congure another drive as a hot spare. If
one of the drives in the array fails, the TeraStation will switch over to the hot spare immediately.
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Note:
If a hot spare is congured, click [Set to normal disk] to change the hot spare to a normal disk.
The [Conrm Operation] screen will appear. Enter the number shown in the [Conrmation Number] eld within 4
60 seconds and click [Apply].
Follow the instructions displayed on the screen.5
You have now congured a hot spare.
Note:
All data in the hot spare drive will be deleted when it is congured as a hot spare and again when it changes over from a
spare to a drive in the array.
Choose a RAID 5 or RAID1 array.
Click [Set to spare-disk].
Click [System] - [Storage] - [RAID Array] in the Web Admin interface.