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Improve FICON channel utilization for CA DISK jobs

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Article ID: 185437

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Updated On:

Products

Disk Backup and Restore - MVS DISK BACKUP AND RESTORE- ADD-ON OPTIO DISK BACKUP AND RESTORE

Issue/Introduction

Do some SYSPARMS like IDRCSIZE, IDRCUSEDx, IOMAXREX can improve FICON channel utilization?

Environment

Release : 12.5

Component : CA Disk Backup and Restore

Resolution

The IDRCSIZE, IDRCUSEDx, IOMAXREX SYSPARMS don't have any impact in channel utilization.
IOCHNBLK and SYNCDEVS can improve performance, but IOCHNBLK not nearly as much as SYNCDEVS.