Service Providers
• Development of digital preservation services– UCSD
• San Diego Supercomputer Center (SDSC)• UCSD Libraries
– National Center for Atmospheric Research (NCAR)
– University of Maryland Institute for Advanced Computer Studies (UMIACS)
Chronopolis
• Digital preservation data grid framework• Designed to leverage the storage capabilities
at SDSC, NCAR and UMIACS• Emphasizes heterogeneous and redundant
data storage systems• 150 TB of storage capacity (50 TB x 3 nodes)• 3 geographically distributed copies of data• Audit reporting
Data Providers
• Inter-university Consortium for Political and Social Research (ICPSR)– social science research data
• California Digital Library– web-at-risk collections
• North Carolina State University Libraries– geospatial data resources
• Scripps Institution of Oceanography– data from research cruises
Data
Manifest
Node 1
ET-1 ServiceLevel Agreement
Data
DP
ET-3 AcquisitionValidation
ET-2 AcquisitionTransfer
MCAT
Data
Manifest
Node 1
ET-1 ServiceLevel Agreement
Data
DP
ET-4 AcquisitionRegistration to SRB
ET-3 AcquisitionValidation
ET-2 AcquisitionTransfer
MCAT
Data
Manifest
Node 1
ET-1 ServiceLevel Agreement
Data
DP
ET-4 AcquisitionRegistration to SRB
ET-3 AcquisitionValidation
ET-2 AcquisitionTransfer
ACEACE
ET-5 AcquisitionRegistration into ACE
MCAT
Data
Manifest
Node 1
ET-1 ServiceLevel Agreement
Data
DP
ET-4 AcquisitionRegistration to SRB
ET-3 AcquisitionValidation
ET-2 AcquisitionTransfer
ACEACE
ET-5 AcquisitionRegistration into ACE
Node 3
Node 2
Replication Monitor
Replication Monitor
ET-6 Inter-NodeInventoryCheck
MCAT
Data
Manifest
Node 1
ET-1 ServiceLevel Agreement
Data
DP
ET-4 AcquisitionRegistration to SRB
ET-3 AcquisitionValidation
ET-2 AcquisitionTransfer
ACEACE
ET-5 AcquisitionRegistration into ACE
Node 3
Node 2
Replication Monitor
Replication Monitor
ET-7 AcquisitionReplication
ET-6 Inter-NodeInventoryCheck
MCAT
Data
Manifest
Node 1
ET-1 ServiceLevel Agreement
Data
DP
ET-4 AcquisitionRegistration to SRB
ET-3 AcquisitionValidation
ET-2 AcquisitionTransfer
ACEACE
ET-5 AcquisitionRegistration into ACE
ET-8 File Integrity Check
Node 3
Node 2
Replication Monitor
Replication Monitor
ET-7 AcquisitionReplication
ET-6 Inter-NodeInventoryCheck
MCAT
Data
Manifest
Node 1
ET-1 ServiceLevel Agreement
Data
DP
ET-4 AcquisitionRegistration to SRB
ET-3 AcquisitionValidation
ET-2 AcquisitionTransfer
ACEACE
ET-5 AcquisitionRegistration into ACE
ET-8 File Integrity Check
Node 3
Node 2
Replication Monitor
Replication Monitor
ET-7 AcquisitionReplication
ET-6 Inter-NodeInventoryCheck
Future directions
• Update auditing procedures• Updated portal• Automation of collection ingest• New collections and storage nodes• Fully-fledged business model• TRAC certification
MCAT
Data
Manifest
Node 1
ET-1 ServiceLevel Agreement
Data
DP
ET-4 AcquisitionRegistration to SRB
ET-3 AcquisitionValidation
ET-2 AcquisitionTransfer
ACEACE
ET-5 AcquisitionRegistration into ACE
ET-8 File Integrity Check
Node 3
Node 2
Replication Monitor
Replication Monitor
ET-7 AcquisitionReplication
ET-6 Inter-NodeInventoryCheck