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Security Operations · Advanced

Splunk Bucket

A directory in a Splunk index that holds data for a time range, moving through hot, warm, cold, frozen and thawed stages.

Definition

New data is written to hot buckets, which roll to warm (read-only), then cold (often cheaper storage), then frozen, where data is deleted or archived. Archived frozen data can be restored to thawed. Bucket rolling is controlled by size and age settings in indexes.conf.

Example

frozenTimePeriodInSecs = 31536000 retains data for one year before freezing.

Exam tip

Know the order: hot, warm, cold, frozen, thawed; only hot buckets are written to.

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