--- title: "IO History" slug: "io-history" updated: 2022-11-09T10:25:19Z published: 2022-11-09T10:25:19Z canonical: "docs.zetaly.io/io-history" --- > ## 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. # IO History Stored in ioHist Comes from [ioData](/v1/docs/smf-30-4-io-step-total) | DB Column name | Aggregation Function | FROM DB Column name | Configurable | In GROUPBY | Description | | --- | --- | --- | --- | --- | --- | | scope | | | | | | | startTime | MIN | | | | | | beginTime | MIN | startTime | | | | | endTime | MAX | endTime | | | | | systemName | | | | X | | | sysplex | | | | X | | | sid | | | | X | | | racfGroup | | | X | X | | | racfUser | | | | X | | | jobClass | | | X | X | | | jobName | | | | X | | | stepName | | | X | X | | | pgmName | | | | X | | | execType | | | | X | | | wlmClass | | | X | X | | | wlmName | | | X | X | | | wlmGroup | | | X | X | | | wlmReport | | | X | X | | | devnum | | | | X | | | unitType | | | X | X | | | devClass | | | X | X | | | ddName | | | X | X | | | useCount | COUNT | | | | | | totBlkCount | SUM | | | | | | totConnTime | SUM | | | | | | maxBlkSize | MAX | | | | | | actionId | | | | | |