Pedestal Features; Pedestal Cabinet - Compaq StorageWorks TM RAID Array 3000 Pedestal Storage Subsystem Hardware User's Manual

1-4 RAID Array 3000 Pedestal Storage Subsystem Hardware User's Guide

Pedestal Features

Pedestal Cabinet

The major features of the pedestal are:
Two differential 16-bit UltraSCSI host buses
Seven 3½-in disk drive SBB slots
One dual-channel RAID array controller
Second controller option for redundancy
Expansion pedestal option allowing up to fourteen SBB slots in a dual-
pedestal subsystem configuration
Memory cache expansion option for the controller
Redundant power provided by two fan-cooled universal AC input power
supplies (50/60 Hz, 100 to 240 VAC)
Cache backup provided by an external UPS
Environmental monitor unit (EMU) for error detection
The ability to hot plug SBBs without powering down the system
The pedestal cabinet is a modular freestanding storage enclosure that is
completely self-contained. It has two fan-cooled power supplies, an internal
EMU circuit board, and a RAID array controller with front panel display and
control.
Figure 1–2 shows the major components in the pedestal enclosure.
Figure 1–3 identifies the items on the rear panel power supplies. The
characteristics of the pedestal cabinet are:
The disk drive storage capacity is seven 3½-in disk drive SBBs.
The subsystem slots are numbered 0 through 6 from top to bottom.
There are two 68-pin VHDCI female SCSI connectors on the rear panel,
which interconnect the host system to the RAID controller in the
pedestal.
The rear panel also contains an alarm switch, a UPS monitor connector,
an external fault condition connector, and a serial port connector (for
controller configuration).