5.1.1.2 Adequate hardware and software support for backup functionality sufficient for preserving the repository content and tracking repository functions

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5.1.1.2 Adequate hardware and software support for backup functionality sufficient for preserving the repository content and tracking repository functions
Status Ready for review
Compliance Rating Fully compliant
Responsible

Requirement: The repository shall have adequate hardware and software support for backup functionality sufficient for preserving the repository content and tracking repository functions.

APTrust system infrastructure is designed to be highly reliable. Deposits (main content) are packaged as “bags” and their structure defined in the BagIT specification (https://tools.ietf.org/html/draft-kunze-bagit-08). Once uploaded to the repository bags are unpacked, verified (two file checksums are stored in the repositories metadata) and stored in APTrust. Bags are stored using AWS S3 (designed for 99.99% availability) buckets. These are replicated to a geographically diverse locations and stored using AWS Glacier. Amazon Glacier is designed to provide average annual durability of 99.999999999% for an archive. All deposits are fixity checked every 90 days to detect data degradation.

More details about preservation and storage can be found here Preservation and Storage.

Backup information about deposit metadata can be found here: Support and Maintenance#Backups

APTrust has a designated systems administrator to make sure backups are successful and accurate.