Ultrastar Data60 Rack Requirements - Western Digital Ultrastar Data60 User Manual

User Guide
Figure 12: HDD Assembly LED Location
Table 14: HDD Assembly LED Identification
Number LED Name
1 HDD Drive Multi-
Function LED
Note: During service events—when a drive is hot plugged or replaced and the drive installed
properly—the LED state of that drive slot will change to solid ON. This is to provide the user
with visual feedback that the drive has been successfully connected and has been discovered
by the expander. Once the enclosure has been slid back into the rack and the OPEN bit on the
door sensor element is 0, the LED will return to the previously set state (Ident, Fault, or Off).
For example: A drive in slot 0 needs to be replaced. The fault bit on Array Slot descriptor
0 is set to indicate to the service technician which drive slot to replace. This will cause the
LED to blink at 1Hz (50% duty cycle). When the service technician pulls out the enclosure,
inserts a new drive, and successfully installs the drive, the slot LED state will change to solid
ON to indicate that the drive was properly installed. When the service technician pushes the
enclosure back into the rack and the OPEN bit of the door sensor element changes from 1
to 0, the LED state of drive slot 0 will change back to the fault indication blink rate (1 Hz 50%
duty cycle).
1.12 Ultrastar Data60 Rack Requirements
Color
Amber Blink @ 2 Hz (50% duty cycle) – Drive identify
Blink @ 1 Hz (50% duty cycle) – Drive fault
Off – Drive has no faults
Note: LEDs have a 50% duty cycle (On for 2
seconds, off for less than a second).

1.12 Ultrastar Data60 Rack Requirements

Behavior
1. Overview
15