5.1.1.3.1 Record and report to its administration all incidents of data corruption or loss, and steps shall be taken to repair/replace

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5.1.1.3.1 Record and report to its administration all incidents of data corruption or loss, and steps shall be taken to repair/replace
Status Ready for review
Compliance Rating Fully compliant
Responsible

Requirement: The repository shall record and report to its administration all incidents of data corruption or loss, and steps shall be taken to repair/replace corrupt or lost data.

At the time of ingest a fixity check is taking place that calculates SHA-256 and MD5 checksums and compares those to the ones supplied as part of the bag in the metadata. If a checksum mismatches the depositor will be notified by email about the data corruption.

The system conducts the same fixity checks every 90-days after ingest and reports the same way.

Depositors are alerted about failed fixity checks. Restore of alternative versions are handled manually by APTrust staff.