Unisys NX5820 manual I/O Subsystem, Hardware Overview Expansion Sections, Rack-Mounted Devices

Hardware Overview

Expansion Sections

The expansion sections house the following units:

−Server A

−Optional servers (up to five maximum per domain)

−Up to two Maintenance LAN Hubs, unlimited switching (Public) Hubs, and up to two Apex Selector ST Switches

−An OSS7000 rack containing system peripheral units, including:

οCD-ROM drive

οQIC tape drive

οTwo disk drives

−Optional Uninterruptible Power Supply (UPS)

−COMMPOD

SVGA Monitor and Keyboard with Mouse

•Provides the operator interface with the system

•Includes cables for positioning the keyboard, monitor, and mouse on a table or similar surface near the system cabinet. A table is available as an option.

•A remote support modem—for domestic systems only—is located with the monitor and keyboard.

The I/O Subsystem

The I/O subsystem includes:

•Rack-mounted devices

•Other I/O devices

Rack-Mounted Devices

•Housed in 36U-high rack-style utility cabinets (U = 1.75 inches)

•Accommodates rack devices with both Unity Storage Device (USD) and Open Storage Device (OSD) style prefixes

•Rack-mounted devices connect to channel adapters via CS-bus interfaces (see Sections 4 and 5)

For a comprehensive list of racks and devices qualified for use on the system, refer to Appendix A in the ClearPath Enterprise Server NX I/O Hardware Configuration Guide (7008 6087).

7017 6300–005 1–5