Optimizing the collection of cache controller and DASD space statistics
To optimize the collection of cache statistics, designate a single LPAR to collect statistics.
- You can designate a single LPAR to collect cache space statistics.
- You can deactivate all other LPARs from collecting cache space statistics.
You must use PARMGEN to designate the LPAR that collects cache controller statistics. You must also disable non designated LPARs from collecting cache controller statistics.
The statistics that are collected by the designated LPAR are made available to the LPARs that have been deactivated. So, you can view the statistics that are collected by one LPAR on all LPARs.
- Prerequisites
To make cache controller and DASD space statistics available to LPARs that do not collect statistics:
- You must install OMEGAMON® for Storage on z/OS®, component 5608A 1000
To make DASD space statistics available to LPARs that do not collect statistics:
- You must exclude all volumes from collecting DASD space statistics
If you specify a volume to collect DASD space statistics, you disable the sharing of DASD space statistics with LPARs that do not collect statistics.
- Related tasks
- You modify the cache collection interval parameter to control how often or whether OMEGAMON for Storage on z/OS collects cache statistics for cached volumes and control units.