Cisco Systems VCO-4K User Manual

Storage/Control I/O Module

The Storage/Control I/O Module performs two functions: to connect outside interfaces to the system controller and to house the hard disk drive. It plugs into the back of the VCO/4K system and provides the I/O interfaces for system peripheral devices and host communication links using four serial ports, one Ethernet port, one printer port and one SCSI connector. Figure 4-1 shows the front panel of the Storage/Control I/O Module.

Physical interfaces to host computers and peripheral devices are provided on the front panel of the Storage/Control I/O Module. Two serial ports are available for SIO host links, and another two are dedicated to supporting the local system administration console and a remote maintenance modem. An Ethernet Transceiver interface and parallel printer connector are also located on the Storage/Control I/O Module.

Specifications

CHAPTER

Part Number Contact your Cisco Systems sales representative

Interfaces FourEIA/TIA-232serial ports (master console, remote maintenancemodem,

and two SIO host links) One Ethernet transceiver interface One Centronics-type parallel interface (system printer) One SCSI connector (reserved for future use)

Power Requirements: Maximum Typical

Hard Disk Drive +5 VDC 0.4A 0.33A

+12 VDC 1.0A 0.17A

Ethernet +5 VDC 0.5A 0.5A

+12 VDC 0A 0A

EIA/TIA-232 +5 VDC 0A 0A

+12 VDC 0.1A 0.05A

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Description

Chapter 4 Storage/Control I/O Module

Total Current +5 VDC 0.9A 0.85A

+12 VDC 1.1A .22A

Total Power +.5 VDC 7.7 Watts

+12 VDC 6.89 Watts

Operating Temperature 10 to 40°C (50 to 104°F)

Relative Humidity 20 to 80% (noncondensing)

Physical Dimensions Height: 14.4 inch (36.6 cm)

Depth: 5.6 inch (14.2 cm)

Width: 1.6 inch (4.1 cm)

Description

The Storage I/O Module is two card slots wide and slides into the back of the VCO system where it plugs into the control midplane. All outside connections are mounted on the faceplate of the module. All internal connectors are mounted on the board itself for easy access to system internals (for example, SCSI and Ethernet).

The VCO/4K system hard drive is mounted on the upper portion of the I/O Module. The board is built to accommodate a 3.5-inch hard drive. Physical mounting points are provided for the hard drive as well as a 50-pin SCSI interface to the system controller. There is also a provision for an external SCSI connection on the front panel. The SCSI connection is reserved for future use.

Front Panel Indicators and Ports Assignments

Figure 4-1 shows the front panel of the Storage/Control I/O Module.

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Chapter 4 Storage/Control I/O Module

Figure 4-1 Storage/Control I/O Module Front Panel

SCSI TRM PWR

ENET PWR

ST /CTRL - I/O

SCSI

INTERFACE

ETHERNET

Description

PRINTER

PORT 1

PORT 3

CONSOLE

PORT 2

PORT 4

TTY01

50165

Power is supplied to the Storage/Control I/O Module via the midplane from the Combined Controller card. The hard drive LED signal is brought to the system controller board via the midplane and brought out to the front panel to show hard drive activity. It is located on the Combined Controller in the front of the VCO (see Figure 4-3).

SCSI terminations are provided as an option to be populated on the Storage/Control I/O Module depending on the system configuration. They are currently not being used.

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Description

The connectors mounted on the front pane are:

4 serial ports DB-25

SCSI port 50-pin mini-SCSI connector

Ethernet DB-15

Printer 36-pin Centronics

The connectors mounted on the board are:

SCSI DIN 64

MODEM 20-pin IDC connector

MODEM power 5-pin header

The LEDs mounted on the board are:

ENET If illuminated, shows that power is available to the

SCSI If illuminated, shows that there is SCSI termination

Hard Disk Drive

The hard disk drive is a SCSI-compatible drive that is used as the system controller’s main data storage facility. The hard disk drive requires +5 volts and +12 volts DC to operate. The hard disk drive is shown in Figure 4-2. The Storage/Control I/O Module supports the hard disk drive LED. The LED is located on the Combined Controller and is visible from the front of the system (see Figure 4-3).

Ethernet

power

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Figure 4-2 Location of the Hard Disk Drive on the Storage/Control I/O Module

Description

Hard disk drive

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Description

Chapter 4 Storage/Control I/O Module

Figure 4-3 Location of Hard Disk Drive LED on the Combined Controller

CC OO

TT EE MM

IISSYY

RESET

ACO

MAJOR

ACO

MINOR

AUX 1

AUX 2

ALARMS

ACTIVE

AAC

INSERT ONLY CARDS DESIGNATED BELOW

For Non-Redundant configuration use slots 1,3-4

For Redundant configuration use slots 1,2, 3-4, 5-6

NBCNBC

COMBINED

CONTROLLER

STATUS

RMT RST

COMBINED

CONTROLLER

CPU

FAIL

STATUS

RUN

SCON

RMT RST

ABORT

RESET

AUTO

A SELECT

CPU

FAIL

RUN

CONNECT ESD

WRIST STRAP HERE

Hard disk

drive LEDs

Midplane Connectors

The Storage/Control I/O Module plugs into the midplane through standard DIN 41612 triple-row,96-pin male connectors. Figure 4-4 shows the control midplane connectors.

MOTOROLA

POWER

RING

POWER

GEN.

RING GEN.

50167

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