User`s guide

6 NovaScale 4020 User’s Guide
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.
A
B
A. LED
B. Latch
Figure 6. Hard Drive Carrier
Table 3. SCSI Hard Drive LED Details
Feature Description
Green, flashing Indicates the hard drive is active
Yellow/Green flashing Indicates a hard drive fault and hard drive is powered
Yellow/Blank flashing Indicates a hard drive fault and hard drive is not powered
Not illuminated Indicates no hard drive is installed in the bay