---
title: "SMF 74-1 Device Activity"
slug: "smf-74-subtype-1-device-activity"
updated: 2024-02-28T16:16:59Z
published: 2024-02-28T16:16:59Z
canonical: "docs.zetaly.io/smf-74-subtype-1-device-activity"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zetaly.io/llms.txt
> Use this file to discover all available pages before exploring further.

# SMF 74-1 Device Activity

## Introduction

## Fields

Stored in devData

| SMF Field | DB Column name | Description | Unit |
| --- | --- | --- | --- |
|  | recType | Value is always 0 |  |
| SMF74DAT | startTime | Date when the RMF measurement interval started |  |
| SMF74IST | startTime | Time when the RMF measurement interval started |  |
| SMF74DTE | endTime | Time Date when the record was moved into the SMF buffer |  |
| SMF74TME | endTime | Time Date when the record was moved into the SMF buffer |  |
| SMF74INT | seconds | Duration of the RMF measurement interval, in the form mmsstttF |  |
| SMF74SID | sid | System identification (from the SID parameter) |  |
| SMF74XNM | sysplex | Sysplex name ( in the COUPLExx parmlib member) |  |
| SMF74XNM | sysplex | Sysplex name ( in the COUPLExx parmlib member) |  |
| SMF74SNM | systemName | System name (r in the IEASYSxx parmlib member) |  |
| SMF74DCT | storageArray | Type and Model |  |
| SMF74SGN | storageGroup | Storage group name as defined by DFSMS |  |
| SMF74SER | volser | Volume serial of the volume mounted on this device |  |
| SMF74NUM | devnum | Device number |  |
| SMF74LCU | lcu | Logical C.U. |  |
| SMF74DCT | typeNum | First element of **storageArray** |  |
| SMF74DCT | modelNum | Second element of **storageArray** |  |
| SMF74DCT | manufacture | Third element of **storageArray** |  |
| SMF74DCT | plant | Fourth element of **storageArray** |  |
| SMF74DCT | seqNum | Fifth element of **storageArray** |  |
| SMF74DCT | tag | Storage tag |  |
| SMF74DEV | unit | Device model name |  |
| SMF74CU | devType | Control unit name |  |
| SMF74TYP | unitType | Unit Type |  |
| SMF74CNF | devInd | Device Indicator |  |
| SMF74CLF | rptFlag | DASD Report Flag |  |
| SMF74CNX | devFlags | Dev Flags Extension |  |
| SMF74DTS | sharedFlags | Shared Device Flags |  |
| SMF74CAP | cylinders | DASD Cylinders |  |
| SMF74SAM | sampleCount | Number of samples |  |
| SMF74NUX | numUcbs | Number of UCBS (PAVS) |  |
| SMF74HPC | hpavAlias | Number of HyperPAV alias |  |
| SMF74SSC | sschCount | Number of SSCH |  |
| SMF74MEC | measCount | Number of Measurement Count |  |
| SMF74CNN | connTime | Connect time | second |
| SMF74PEN | pendTime | Pending time | second |
| SMF74ATV | actvTime | Active time | second |
| SMF74DIS | discTime | Disconnect time | second |
| SMF74DVB | busyTime | Busy delay time | second |
| SMF74CMR | cmrTime | Command R.T. | second |
| SMF74QUE | queueCount | Number of Requests Queued |  |
| SMF74UTL | missedCount | Number of Samples Reserved |  |
| SMF74RSV | resvCount | Number of Reserved |  |
| SMF74ALC | allocCount | Number of Allocated |  |
| SMF74MTP | mountCount | Number of Mount Pending |  |
| SMF74NRD | nreadyCount | Number of Not Ready |  |
| SMF74COF | timerCount | Number of Timer Overflow |  |
| SMF74ICT | errorCount | Number of Incorrect Samples |  |
| SMF74MTC | tapeMounts | Tape mounts |  |
| SMF74PSM | pavSuccess | Number of Success PAV |  |
| SMF74PCT | pavUnsuccess | Number of Unsuccess PAV |  |
| SMF74TYP | isDasd | True if SMF74TYP substring(4, 2) is equal to 20 |  |
| SMF74TYP | isTape | True if SMF74TYP substring(4, 2) is equal to 80 |  |
|  | actionId |  |  |
|  | cec_name |  |  |
|  | cec_type |  |  |
|  | cec_model |  |  |
|  | lpar_name |  |  |