Figure 6. Hard Drive Carrier; Table 3. Scsi Hard Drive Led Details - Bull NovaScale 4020 User Manual

Hot-swap Hard Drive Carrier
The hot-swap hard drive carrier accepts 15,000-RPM and slower Ultra320 SCSI technology
SCA-type hard drives. The peripheral bay supports Low Voltage Differential (LVD) SCSI disk
drives only. Single-Ended (SE) SCSI devices are not supported in the peripheral bay. SE
drives are only supported on the external SCSI connector. Hard drive carriers that accommodate
3.5-inch by 1.0-inch SCSI disk drives are required as part of the hot-swap implementation. The
disk drive is attached to the carrier with four fasteners, and is retained in the chassis by a
locking handle. Figure 6 shows a hard drive carrier that has been removed from the peripheral
bay. The drive is accessed by pressing the latch to release the drive carrier door, then pulling
out on the door.
The SCSI backplane board contains a dual-color LED for each hard drive. The LED can be
seen at the right edge of the carrier, as shown in the figure. The LED displays the drive status,
as described in Table 3.
Table 3. SCSI Hard Drive LED Details
Feature
Green, flashing
Yellow/Green flashing
Yellow/Blank flashing
Not illuminated
6
A
B
A. LED
B. Latch

Figure 6. Hard Drive Carrier

Description
Indicates the hard drive is active
Indicates a hard drive fault and hard drive is powered
Indicates a hard drive fault and hard drive is not powered
Indicates no hard drive is installed in the bay
NovaScale 4020 User's Guide