Migration Cycle Interval Years by Format Class Lookup
Look up an illustrative local review-cycle interval by broad format class. These fixed values are planning defaults, not a preservation standard or a substitute for format-risk monitoring; migration should follow an institution's documented policy and evidence.
Description
Look up an illustrative local preservation-review interval by broad digital format class.
Look up an illustrative local review-cycle interval by broad format class. These fixed values are planning defaults, not a preservation standard or a substitute for format-risk monitoring; migration should follow an institution's documented policy and evidence.
When to use Migration Cycle Interval Years by Format Class Lookup
- Look up an illustrative local preservation-review interval by broad digital format class.
- Apply the same explicit rule consistently during ingest, quality control, reporting, or preservation planning.
- Expose records that need human review without silently rewriting the source data.
How the calculation works
The returned value is a policy-review cadence, not evidence that every object should be migrated automatically when the interval expires.
interval = local policy table[format class] Interpreting the result
The returned value is a policy-review cadence, not evidence that every object should be migrated automatically when the interval expires.
Assumptions and limitations
- No universal migration interval exists; format risk, rendering dependencies, validation evidence, authenticity, and institutional policy should drive action.
- Preserve the original value and record the rule version when using this result in an archival workflow.