IBM System Storage DCS9900 1269-3S2 Storage Expansion Unit Installation, Service, and User Guide
6
The module incorporates the LED indicators as seen in
1.3.4 Drive Carrier Module
The Drive Carrier Module comprises a hard disk mounted in a carrier (
). Each drive bay will
house a single Low Profile 1.0 inch high, 3.5 inch form factor disk drive in its carrier.
Each disk drive is enclosed in a die-cast aluminum carrier which provides excellent thermal conduction,
radio frequency and electro-magnetic induction protection, and affords the drive maximum physical
protection.
The front cap also supports an ergonomic handle which provides the following functions:
• camming of carrier into and out of drive bays.
• positive 'spring loading' of the drive/backplane connector.
• an anti-tamper lock operated by a torx socket type key.
1.3.4.1
Drive Status Indicators
Each drive carrier incorporates two indicators: an upper (Green) and lower (Amber). In normal operation,
the green indicator will be ON and will flicker as the drive operates.
Note
Direct dock SDATA support for the green (activity) LED is variable. The amber indicator is OFF in normal
operation and ON when there is a fault present.
1.3.4.2
Anti-tamper Locks
Anti-tamper locks are fitted in the drive carrier handles (
) and are accessed through the small
cutout in the latch section of the handle.These are provided to disable the normal ‘pinch' latch action of
the carrier handle and prevent accidental or unauthorized removal of drives.
Table 1–1
EBOD Module LEDs
LED Functions
State
Description
Phystate Green
ON
Flashing
OFF
Ready
Active
Not Ready
System Health
Red
Green
Flashing Red
Fault
Good
POST
Figure 1–7
Drive Carrier Module
