IT44016: CAPACITY DATA AGGREGATION FOR DAILY AND HOURLY IS MISSING FOR HITACHI DEVICE

APAR status

• Closed as Permanent restriction.

Error description

• While monitoring Hitachi device with performance monitoring
  disabled the capacity tab with data resolution of daily selected
  
  may show gaps in data even though data collection (probe)
  is successfully running daily and sample data does not have
  gaps. Switching to an hourly resolution shows 1 entry per day
  for the same timeframe that is missing the daily aggregation
  rather than hourly entries.  Daily and hourly aggregation
  should be occurring based on the successful collection of the
  probe data. This behavior only appears with some Hitachi
  devices.  Other devices show accurate hourly and daily
  aggregation.
  

Local fix

• Enabling performance monitoring on the Hitachi device
  will prevent this issue.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * IBM Storage Insights users monitoring Hitachi device with    *
  * performance monitoring disabled                              *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * In Storage Insights there is a limitation while monitoring   *
  * Hitachi device when user has disabled the performance        *
  * monitoring:                                                  *
  *                                                              *
  * The capacity tab with data resolution of daily selected      *
  * may show gaps in data even though data collection            *
  * (probe) is successfully running daily and sample data        *
  * does not have gaps.  Switching to an hourly resolution       *
  * shows 1 entry per day for the same timeframe that is         *
  * missing the daily aggregation rather than hourly entries.    *
  * Daily and hourly aggregation should be occurring based       *
  * on the successful collection of the probe data.              *
  *                                                              *
  * This behavior only occurs with Hitachi devices, and          *
  * only when the performance monitoring of the device is        *
  * disabled.                                                    *
  *                                                              *
  * When performance monitoring of a Hitachi device is           *
  * enabled then accurate hourly and daily aggregation is        *
  * shown in Storage Insights.                                   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• For those Storage Insights users monitoring Hitachi device
  we strongly recommend enabling performance monitoring
  to ensure this limitation is not encountered.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

Applicable component levels