Compaq 3000 - Manual (Page 19)

Chapter 1. Product Overview
EK–SMCPQ–UG. C01 1–7
1.4 Shelf 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.
1.5 Shelf 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
SHR-1048
Cache Memory
Modules