IBM 436854u - System x3200 M2 5U Mini Tower Server User Manual page 24

CD or DVD drive activity LED
(Optional) diskette-eject button
(Optional) diskette drive activity LED
Hot-swap hard disk drive activity LED (some models)
Hot-swap hard disk drive status LED (some models)
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System x3200 M2 Types 4367 and 4368: User's Guide
When this LED is lit, it indicates that the CD drive or DVD drive is in use.
Press this button to release a diskette from the diskette drive.
When this LED is lit, it indicates that the diskette drive is in use.
On some server models, each hot-swap drive has a hard disk drive activity
LED. When this green LED is flashing, it indicates that the associated hard
disk drive is in use.
When the drive is removed, this LED also is visible on the hard disk drive
backplane, next to the drive connector. The backplane is the printed circuit
board behind drive bays 4 through 7 (or bays 4 through 11 on some
2.5-inch hard disk drive SAS models).
On some server models, each hot-swap hard disk drive has an amber
status LED. If this amber status LED for a drive is lit, it indicates that the
associated hard disk drive has failed.
If an optional IBM ServeRAID controller is installed in the server and the
LED flashes slowly (one flash per second), it indicates that the drive is
being rebuilt. When the LED is flashing rapidly (three flashes per second), it
indicates that the controller is identifying the drive.
When the drive is removed, this LED also is visible on the hard disk drive
backplane, below the hot-swap hard disk drive activity LED.