Attachment 4

Project Open Book Cost Information

Table 1. Costs of the Digital Archives
Cost Factors Costs per Volume in Year 1
Storage
Device Costs $0.97
Device Maintenance 0.40
Operations Costs 0.40
Media Costs 0.25
Media Refreshment and Data Migration 0.49
Storage Systems Engineering 0.04
Storage Management Overhead 0.03
Total Storage Costs per Volume $2.58
Access
Document Server $2.13
Server Maintenance 0.88
Server Operations 0.88
Access Software 1.22
Software Maintenance 0.50
Access Systems Engineering 0.04
Access Management Overhead 0.03
Printing 0.96
Delivery 0.09
Total Access Costs per Volume $6.72
Table 2. Depository of Library Costs
Cost Factors Costs per Volume in Year 1
Total Storage Costs per Volume $0.21
Access
Retrieval $2.63
Courier 0.27
Circulation 0.60
Delivery 0.90
Total Access Costs per Volume $4.40
Table 3. Projected Costs Per Volume Over 10 Years
Year 1 Year 4 Year 7 Year 10
Depository Library
Depository Storage Costs Per Volume $0.21 $0.24 $0.27 $0.30
Depository Access Costs Per Volume $4.40 $4.95 $5.57 $6.27
Digital Archives
Digital Storage Costs Per Volume $2.58 $1.73 $1.18 $0.82
Digital Access Costs Per Volume $6.72 $4.84 $3.60 $2.79
Table 4. Costs for All Volumes Stored and Used
Year 1 Year 4 Year 7 Year 10
New Volumes 200,000 200,000 200,000 200,000
Depository Library (volumes stored=new volumes)
Estimated annual use (15% of volumes) 30,000 30,000 30,000 30,000
Depository Storage Costs for New Volumes $42, 769 $48,110 $54,117 $60,874
Depository Access Costs for Volumes Used $132,090 $148,583 $167,136 $188,005
Total Depository Storage and Access Costs $174,859 $196,693 $221,253 $248,879
Digital Archives (volumes stored=volumes used)
Estimated annual use (20% of volumes) 40,000 40,000 40,000 40,000
Digital Storage Costs for Volumes Used $103,208 $69,371 $47,207 $32,763
Digital Access Costs for Volumes Used $268,870 $193,400 $143,977 $111,785
Total Digital Storage and Access Costs $372,078 $272,771 $191,184 $144,549
Difference: Depository - Digital ($197, 219) ($66, 078) $30,069 $104, 331

Copied as a matter of Fair Use from Donald Waters & John Garrett, Preserving Digital Information. Report of the Task Force on Archiving of Digital Information Commissioned by the Commision on Preservation and Access & The Research Libraries Group, Inc. (Washington D.C. 1996)