Hard Drive Replacement Procedure
Hard drives in the TeraStation show a green status LED during normal operation. When a drive fails, its error LED will glow red.
1. Error LED
Glows red if a drive has failed.
2. Status LEDs
Green:
Normal operation.
Flashing red:
If you need to remove a drive whose status LED is flashing red, either shut down the TeraStation, or dismount the drive in RAID Builder. Once the TeraStation is shut down, or the drive is dismounted, then it is safe to replace the drive.