ATT 22 Archive Task Team Offline Archive Media Trade Study 2006 Presented by Stu Doescher, USGS WGISS-22 Sept 2006 Annapolis, MD, USA

ATT 22 EROS Tape Technologies Currently Deployed

ATT 22 Usage Characteristics

ATT 22 Methodology Overview Identify Technologies for Investigation Technology Investigation Comparative Ranking by Categories –Reliability –Design –Transfer Speed –Cost… Determine Requirements/Weighting Factors Applied Weighting Factors Supports decision

ATT 22 Media Examined Sun (StorageTek) T10000 HP LTO3 HP LTO4 Quantum DLT-S4 IBM TS1120 Sony SAIT-1 Sony SAIT-2

ATT 22 Criteria Factors Reliability - Write Once / Read Few Cartridge Design Transfer Rate Capacity Cost - Drive & Media Real World Scenarios – 100 and 500 TB Vendor Analysis - Years in Business, Tech Age Drive Compatibility - Up & Down

ATT 22 Design

Transfer Rate

ATT 22 Capacity Capacity

ATT 22 Cost

Scenarios

Vendor Analysis

ATT 22 Drive Compatibility

ATT 22 Summary of Comparative Ranking

ATT 22 Identify Requirements Long-Term Offline Archive Right-Once / Read Never! Not Intended for Robotics Offline, Potentially Offsite Archive Customer Team Selected Weighting Criteria –Best Matched the Need Customer Team Determined the Relative Weights

ATT 22 Results: Weighted Decision Matrix