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  • Cost Modeling
Total Cost of Preservation (TCP)
Unit
ComponentScopeQuantityLabelCostComponent costNote
TCP
SystemRecurring2system-year*$ 255,949=$ 511,899
ProducerRecurring25producer*$ 1,657=$ 41,417
WorkflowRecurring10workflow*$ 1,104=$ 11,045
Content typeRecurring20type-year*$ 1,533=$ 30,669
StorageRecurring13TB-year*$ 690=$ 8,970
MonitoringRecurring1monitoring-year*$ 6,061=$ 6,061
InterventionOne-timeintervention*$ 7,430=$ -
OversightRecurring2oversight-year*$ 681=$ 1,362
TCP2preservation-year=$ 610,061
Pay-as-you-go
System *Recurring0.04system*$ 255,949=$ 10,238
ProducerRecurring1producer$ 1,657=$ 1,657
Workflow *Recurring0.4workflow*$ 5,522=$ 2,209
Content type *Recurring0.8content type*$ 1,533=$ 1,227
StorageRecurring1TB*$ 690=$ 690
Monitoring *Recurring0.04monitor*=$ -
Intervention *One-timeintervention*$ 7,430=$ -
Oversight *Recurring0.08intervention*$ 7,430=$ 594
TCP pay-as-you-goRecurring1preservation-year=$ 16,615
* Common good components apportioned over all N producers
Paid-up
TermOne-time20yearYears under consideration
Investment rate of returnOne-time2%/yearReal rate of return
Annual discount factorOne-time5%/yearReal discount factor
TCP paid-upOne-time20preservation-year=$ 180,092
TCP discounted pay-as-you-goOne-time20preservation-year=$ 213,172
TCP cumulative pay-as-you-goOne-time20preservation-year=$ 332,295