Data Archival and System Redundancy John Ledford August 7 th, 2007

2 of 9 Data Backup Servers 6 Terabytes each Two identical servers RAID6 Fully tested Ready to be packed 60-80MB/s transfer Anthony trained Manual written

3 of 9 Getting the Data Off Radar Manual written Updated Contains Linux Primer for Radar Anyone should be able to use

4 of 9 Getting the Data Home Waterproof Padded Lockable Wheels Hard to miss Two hard drive sets Two paths home

5 of 9 System Redundancy Three Systems, just in case. 1.Main system 2.Full set of replacement cards 3.Another set of replacement cards for depth sounding only

6 of 9 COTS Equipment Spares Brand new CPUs –Primary and secondary = brand new Brand new HD Carriers –Primary = all new –Secondary #1 = new carrier, old HDs –Secondary #2 = new carrier, old HDs Spare VICOR Power Supply Spare CPCI Power Supplies –Already double redundant in chassis Spare Booster Fan

7 of 9 CReSIS Equipment Spares 100% Backup of Digital Cards (2) Spare RF Receivers (1)Spare RF Transmitter (9) Spare Rear Transition Modules (1)Spare Timing Backplane (1) Spare Power Backplane

8 of 9 Another Backup Additionally another pair of carrier cards, waveform generators, and DAQ cards are being brought to make a simple depth sounder if necessary out of connectorized RF components.

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