NEC HX4500 manual Removable Media Drive Bays

The backplane has two main functions: SCSI drive control and system data logging. Drive status is monitored to detect failing drives and to control LED indicators. The backplane features include the following:

insertion and removal of hard drives while power is on (referred to as “hot swap”)

simplified cable management

TSCA connectors to simplify inserting and removing hard drives SCSI management of fault LEDs.

Each backplane supports SCSI drives with SCA connectors.

Removable Media Drive Bays

On the upper left side of the system, four 5 1/4-inch half-height bays (see Figure 1-10) are designed for peripherals with removable media (diskette, CD- ROM, tape). Two available adjacent 5 1/4-inch bays can be converted to a single full-height bay. The 5 1/4-inch drives can be removed directly from the front of the chassis. Removal of the system top cover may be required to install/remove the device cables. Cosmetic filler panel are installed over all unused 5 1/4-inch bays.

Factory-installed CD-ROM reader plus three bays for removable media drives.

Factory-installed 3 1/2-inch diskette drive plus second bay for removable 3 1/2-inch drive.

(Exterior doors shown open)

Figure 1-10. Removable Media Drive Bays

On the upper right side of the system, below the LCD panel, are two built-in

3 1/2-inch bays. One contains a 3 1/2-inch diskette drive that supports both 720 KB and 1.44 MB media (see Figure 1-10).

Note: The SCSI termination resistors must be installed in the last SCSI drive of the daisy chain cabling (bottom media bay). All other devices must have terminators removed.

System Overview 1-19