NEC HX4000, User Manual

Page: 129 / 210

5-40
Upgrades and Options
Installing or Swapping a Disk Drive in a Hot-swap Bay
This procedure describes installing a new drive in or
swapping out a faulty drive from one of the twelve hot-
swap drive bays. The 3 1/2-inch SCSI drives must use
the industry standard 80-pin Single Connector
Attachment (SCA) connector. Each drive must be
installed in a carrier.
Note: To order a carrier contact your sales
representative or dealer.
■
If installing new drives, follow an alternating
installation scheme between the two backplanes
starting with the bottom left drive. Fill the bays left
to right, across a row, and then move up a row.
■
If an individual SCSI drive fault LED (yellow light)
is on steadily, this indicates that the drive below it
has been flagged as faulty by the SCSI host
controller. Follow the procedure described in this
section to remove the faulty drive and swap in a
good one.
Note: Install or swap SCSI drives without turning
off power. This is one of the few system procedures
that is safe to do with the system power left on. This is
true because a Redundant Array of Independent Disks
(RAID) controller module is installed and only for the
drive/carrier assemblies in the hot-swap bays, not for
drives in any other bays.
Notice: ESD can damage disk drives, boards, and other
parts. This system can withstand normal levels of
environmental ESD while you are hot-swapping SCSI
hard drives. However, we recommend that you do all
procedures in this chapter only at an ESD workstation
or provide some ESD protection by wearing an
antistatic wrist strap attached to chassis ground

any
unpainted metal surface

on your system when
handling parts.