Guardian User's Guide

Monitoring Hardware Components

Guardian User’s Guide—425266-001

19-4

Listing the Devices on Your System

A device is a physical component of a computer system that is used to communicate

with the outside world or to acquire or store data. Examples of devices are printers, disks

(volumes), disk drives, tape drives, controllers, processors, and terminals.

Use the Subsystem Control Facility (SCF) to display the configuration characteristics of

all the devices on your system. See the SCF Reference Manual for G-Series Releases for

complete information about SCF, its commands and options, and device types and

subtypes.

Use the SCF LISTDEV command to obtain device listings for all device types,

subtypes, and other device characteristics. For information about specific devices, such

as disks and tapes, use the SCF INFO and STATUS commands.

To list all the devices on your system, enter this command at your TACL prompt:

> SCF LISTDEV

The format of the LISTDEV display is shown below.

The data shown in the report means:

LDev Name PPID BPID Type RSize Pri Program

nnn $process nn,nnn nn,nnn nn,nn nnnnn nnn \sys.$vol.subvol.file

LDev The logical device number

Name The logical device name

PPID The primary CPU number and process identification number (PIN) of the

specified device

BPID The backup CPU number and process identification number (PIN) of the

specified device

Type The device type and subtype

RSize The record size the device is configured for

Pri The priority level of the I/O process

Program The fully qualified name of the program file for the process