This topic applies only to server models with hot-swap internal storage drives.
Each hot-swap storage drive has two LEDs on the front.
Figure 11. Hot-swap-drive LEDs
System-fan status LEDs
Your server has four system fans and each system fan has one corresponding status LED on the chassis.
Remove the server cover to view the system-fan status LEDs.
Note: Depending on the model, your server might look slightly different from the illustration in this topic.
ThinkServer TD350 User Guide and Hardware Maintenance Manual
Blinking rapidly (about four flashes
per second), amber
Blinking slowly (about one flash per
The drive has failed or is not present.
The drive is present but not in use.
The drive is active and data is being
The RAID controller is identifying the
The RAID array has failed and cannot
be recovered. You must recreate a
The drive is being rebuilt.