Variables › MVS Variables › MVS DISK Variable Class

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MVS DISK Variable Class

This section describes variable information for class DISK on system MVS.

Syntax:

MVS [record-type] DISK variable-name | data
ID Option

The following ID options can be used with MVS DISK variables: DEVID, DISKID

Variable information is provided in the following table:

Record Type

Variable Name

Data

Description

SYSTEM

CONNECT

SMF74CNN

Average time spent connected to a channel path

SYSTEM

CUB-DELAY

SMF74CUB

Average time I/O request is delayed due to busy control unit

SYSTEM

DB-DELAY

SMF74DVB

Average time I/O request is delayed due to busy device

SYSTEM

DISCONNECT

SMF74DIS

Average time spent disconnected during an I/O request

SYSTEM

PENDING

SMF74PEN

Average time spent waiting on hardware

SYSTEM

SERVTIME

SMF74ATV

Average service time for device to complete an I/O request

SYSTEM

SSCH

SMF74SSC

Number of start subchannels

SYSTEM

UTILization

SMF74ATV

Percentage of time disk was busy or active