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CHAPTER 1: Introduction
12
Drive carrier module
The drive carrier module comprises a hard disk mounted in a carrier. Each drive bay houses a single,
low profile, 1.0-inch high, 3.5-inch form-factor disk drive in its carrier. The carrier has mounting
locations for SAS or SATA drives.
The front cap also supports an ergonomic handle which provides the following functions:
• Inserting the carriers into the drive bays
• Removing the carriers from drive bays
• Positive “spring loading” of the drive/backplane connector
• An anti-tamper lock operated by a torx-socket type key
Drive status indicators
Each drive carrier has two LEDs, an upper (green) and lower (orange). In normal operation the
green indicator is ON and flickers as the drive operates. The orange indicator is only ON if there
is a drive fault. If the green LED is OFF when the orange LED is ON, a power control circuit failure
is indicated.
Anti-tamper locks
Anti-tamper locks are installed in the drive carrier handles and are accessed through the small
cutout in the latch section of the handle. These locks are provided to disable the normal “pinch”
latch action of the carrier handle.
Power On & OK
(Green)
Module Fault
(Orange)
Status
On Off Normal operation
On On Drive fault
Off On A power control circuit failure