UC-2

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UC-2 Archival Storage
Summary
Number	UC-2
Name	Archival Storage
Context	N/A
Sub-Use Cases	UC-2.1 Receipt of AIP UC-2.2 Manage Storage Media UC-2.3 Media Replacement UC-2.4 Error Checking UC-2.5 Implementation of Disaster Recovery Policies UC-2.6 Provision of AIP to Access UC-2.7 Storage Operational Statistics
Overview	Receive Data transfers AIP into Archival Storage and ensures that it remains intact and retrievable over time
Actors	Error Checking Disaster Recovery Manage Storage Hierarchy Provide Data Receive Data Replace Media Access>Generate DIP Administration>Manage System Configuration Administration>Establish Standards and Policies Ingest>Coordinate Updates
Description
Preconditions	UC-1 Ingest
Trigger	Coordinate Updates sends AIP to Archival Storage>Receive Data (Step 2 of UC-1.5)
Successful outcome	Provide Data is able to provide intact AIP to Access>Generate DIP upon receipt of access request
Steps	Receive Data receives storage request and AIP from Ingest>Coordinate Updates Receive Data transfers the AIP to the assigned storage media Manage Storage Hierarchy receives storage management policies from Administration>Establish Standards and Policies Manage Storage Hierarchy assigns AIP to appropriate storage media based on storage management policies Manage Storage Hierarchy provides operational statistics to Administration>Manage System Configuration Replace Media migrates the AIP (replaces storage media) based on storage management policies Error Checking conducts error checking on stored AIPs Disaster Recovery implements disaster recovery policies such as duplication to remote storage facility Provide Data provides AIP to Access>Generate DIP upon receipt of access Request
Exceptions
Documentation
Citations	OAIS 4-1, section 4.1 "This entity provides the services and functions for the storage, maintenance and retrieval of AIPs. Archival Storage functions include receiving AIPs from Ingest and adding them to permanent storage, managing the storage hierarchy, refreshing the media on which archive holdings are stored, performing routine and special error checking, providing disaster recovery capabilities, and providing AIPs to Access to fulfill orders."
Diagrams	OAIS figure 4-3 (section 4.1.1.3) OAIS fig. 4-3
Notes