Compaq 3000 manual Shelf Cabinet Installation, Shelf Major Components

Chapter 1. Product Overview

1.4Shelf Cabinet Installation

The Controller Shelf can be mounted in a StorageWorks metric or RETMA style cabinet. You must install the appropriate shelf rail kit hardware to properly mount the shelf in the cabinet. The RETMA rail kit is supplied with the shelf and contains the installation guide which describes the installation procedure. The rail kit for a metric cabinet is optional.

The commercial UPS supplied with the Controller Shelf is installed in the cabi- net using a special mounting bracket designed to accommodate either a metric or RETMA style cabinet. The bracket has two sets of mounting holes at each end which allows its installation into either cabinet.

1.5Shelf Major Components

The major components in the controller shelf (see Figure 1–3) include:

∙Dual-channel RAID array controller (a second redundant controller is op- tional)

∙A 16-bit, device I/O module with the SCSI bus isolator/converter circuitry

∙Two 16-bit, host I/O modules that interface the host(s) to the shelf controller

∙Two universal 180 W, 50/60 Hz, 120 or 240 Vac power supplies

∙Two dual-speed blowers to cool shelf components

1.5.1 RAID Array Controller

The RAID controller (Figure 1–4) contains two Wide/UltraSCSI/differential host channels and two Wide/UltraSCSI/Single-Ended disk channels. In dual-controller configurations, the controllers support fully automatic and smooth controller failover in the event of a RAID controller fault.

Figure 1–4 RAID Array 3000 Controller

Cache Memory

Modules

SHR-1048

EK–SMCPQ–UG. C01 1–7