In volume configuration, which setting directly affects the management of ephemeral data?

The setting that directly affects the management of ephemeral data is related to the maximum total data size allocated for all indexed data. Specifically, the maxTotalDataSizeMB parameter determines the upper limit on the total amount of data that can be stored across all volumes for a Splunk index. This is crucial for managing ephemeral data because it enables administrators to control the amount of temporary or short-lived data that the system retains.

Ephemeral data often consists of transient logs or events that do not need to persist long-term. By setting a limit on total data size, Splunk can enforce retention policies and help ensure that older or less crucial ephemeral data is removed as needed, thus optimizing storage and keeping performance at its best.

While other settings like maxVolumeDataSizeMB and homePath.maxDataSizeMB pertain to specific volume sizing or home path configurations, they do not directly govern the overall management of transient or ephemeral data across all indexed volumes the same way that maxTotalDataSizeMB does. EnableTsidxReduction is focused on optimizing index size and performance but is not directly involved in the retention or management of ephemeral data.