Contemporary enterprise-wide information systems typically execute shared or common services that may include inter-process communication, name services, temporary storage allocation, exception handling, role-based access rights, security, backup and business continuity, and directory services, among others. An ISO 14721 conforming digital repository is likely to be part of an information system that may routinely provide some or perhaps all the core security, backup, and business continuity services including firewalls, role-based access rights, data transfer integrity validations, logs for all preservation activities, including failures and anomalies to demonstrate an unbroken chain of custody.