Event log disk space requirements

Mainframe Analytics Recorder User Guide

Version

10.1.x

Audience

anonymous

Part Number

MK-92HC226-08

ft:lastEdition

2026-01-30

The table below shows the amount of event log data.

Table. Amount of event log data when the system logger service is used
Types of event logs	Size^#1	Counts
Startup completion message and error messages	68 + `message-length`^#2	Number of output messages
Only in the case of an I/O error, CCW parameter information for that I/O	68 + `CCW-length`^#2	Number of I/O errors
Only in the case of an I/O error, return information for that I/O	224	Number of I/O errors
Only in the case of an I/O error, sense byte information for that I/O	224	Number of I/O errors
Metric collection parameter information	4256	1

Estimate the disk capacity based on the amount of event log data.

Estimate the disk capacity based on the amount of offloaded event log data and the retention period.

Estimate the disk capacity based on the amount of offloaded event log data and the retention period.

Table. Amount of event log data when the system logger service is not used
Types of event logs	Size^#1	Counts
Startup completion message and error messages	100 + `message-length`^#2	Number of output messages
Only in the case of an I/O error, CCW parameter information for that I/O	100 + `CCW-length`^#2	Number of I/O errors
Only in the case of an I/O error, CCW return information for that I/O	256	Number of I/O errors
Only in the case of an I/O error, sense byte information for that I/O	256	Number of I/O errors
Metric collection parameter information	4288	1