Evelyn McLellan: Created page with 'Main Page > Requirements > OAIS Use Cases > UC-2 Archival Storage {| border="1" cellpadding="10" cellspacing="0" width=90% | colspan="4" style="background-color:si…'

2009-09-04T17:01:36Z

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[[Main Page]] > [[Requirements]] > [[OAIS Use Cases]] > UC-2 Archival Storage

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===UC-2 Archival Storage===
|-
|colspan="2" style="background-color:#E0FFFF;"|'''Summary'''
|-
|Number
|UC-2
|-
|Name
|Archival Storage
|-
|Context
|N/A
|-
|Sub-Use Cases
|
*[[UC-2.1 | UC-2.1 Receipt of AIP]]
*[[UC-2.2 | UC-2.2 Manage Storage Media]]
*[[UC-2.3 | UC-2.3 Media Replacement]]
*[[UC-2.4 | UC-2.4 Error Checking]]
*[[UC-2.5 | UC-2.5 Implementation of Disaster Recovery Policies]]
*[[UC-2.6 | UC-2.6 Provision of AIP to Access]]
*[[UC-2.7 | 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'''
|-
|colspan="2" style="background-color:#E0FFFF;"|'''Description'''
|-
|Preconditions
|[[UC-1 | 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
|
|-
|colspan="2" style="background-color:#E0FFFF;"|'''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)
[[Image:OAIS_4-3.png|500px|left|thumb|OAIS fig. 4-3]]
|-
|colspan="2" style="background-color:#E0FFFF;"|'''Notes'''
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UC-2 - Revision history

Evelyn McLellan: Created page with 'Main Page > Requirements > OAIS Use Cases > UC-2 Archival Storage {| border="1" cellpadding="10" cellspacing="0" width=90% | colspan="4" style="background-color:si…'