Index: /trunk/doc/design/haleakala_wireless.tex
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--- /trunk/doc/design/haleakala_wireless.tex	(revision 2387)
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+\documentclass[panstarrs]{panstarrs}
+
+%\documentclass[panstarrs,spec]{panstarrs}
+%\documentclass[panstarrs,psreport,12pt]{panstarrs}
+
+% basic document variables
+\title{An Inexpensive and Secure Network for the Pan-STARRS Prototype}
+\subtitle{Wireless Gigabit Ethernet on Haleakala}
+\author{Joshua Hoblitt}
+\audience{Pan-STARRS Management}
+%\shorttitle{IPP System Design}
+%\group{Pan-STARRS Algorithm Group}
+\project{Pan-STARRS Image Processing Pipeline}
+\organization{Institute for Astronomy}
+\version{00}
+\docnumber{PSDC-xxx-xxx}
+% note the use of the docnumber & version number:
+% the complete PSDC document number is given by
+% \thedocnumber-\theversion
+
+\begin{document}
+\maketitle
+
+% -- Revision History --
+\RevisionsStart
+% version   Date         Description
+00        & 2004.09.15 & First draft \\
+\hline
+%02        & 2003.03.05 & Second draft \\
+\RevisionsEnd
+
+% -- TBD / TBR Listing --
+%\TBDsStart
+% section % page Date        Description
+%1.2.3.4   & 2    & xxx-xxx & missing a dingle on a dangle \\
+%\TBDsEnd
+
+\pagebreak
+\tableofcontents
+
+%\pagebreak 
+%\listoffigures
+
+\pagebreak
+\pagenumbering{arabic}
+
+\section{The Challenge}
+
+The Pan-STARRS prototype system (PS1) will generate 2 Gigabytes (2,013,265,920
+bytes) of data for each exposure.  With a planned cadence of one integration
+every 40 seconds the network carrying data from PS1 to MHPCC for processing
+must have a throughput of at least 402 Mbit/s (402,653,184 bits).  That
+estimate does not including transport over head, overclocked pixels, metadata,
+or control messages.
+
+The PS1 data rate is almost a factor of 3 greater then the theoretical capacity
+of the OC-3c being provided to the summit of Haleakala by MSSS.
+
+\section{The Conventional Solution}
+
+An OC-12c (622 Mbit/s) leased from Verizon would meet the PS1 data rate
+requirements.  With a commitment to a 3-year contract the monthly charges would
+be\$16,970 or \$610,920 over the operational lifetime of PS1.  OC-12c interface
+cards would be required for the Cisco 65xx series switches that are planned for
+deployment at the PS1 site and MHPCC.  These cards carry a list price of
+\$60,000 but Cisco typical offers a 30\% academic discount, limiting the
+equipment investment to \$84,000.  Verizon will also charge an NRC
+(non-reoccurring charge) for setting up the link.  The exact cost of the NRC is
+difficult to determine but as a reference point the NRC for the existing OC-3c
+on Haleakala was \$400,000.
+
+It is reasonable to assume that the minimum cost of a leased line would have a
+total cost of ownership (TCO) of \$619,320 and has a normalized value of
+\$331.90 per Mbit/s per year.
+
+\section{The Wireless Solution}
+
+The Loea Corporation manufactures and sells millimeter-wavelength radios that
+are capable of 1.25Gbit/s at distances up to 10Km.  While this equipment
+doesn't have the range to link directly from the summit of Haleakala to MHPCC.
+it is capable of spanning the distance from the summit to the existing IFA site
+in Waiakoa and again the distance from the IFA site to MHPCC.  This relayed
+configuration requires two pairs of radio and antennas and integration at three
+sites.  The preliminary quotation for the equipment and labor is \$202,400.  The
+annual maintenance costs for this equipment is \$10,000 or \$30,000 over the
+lifetime of PS1.  This configuration will also require some support
+infrastructure at the IFA Waiakoa site.  The support equipment would include a
+small enclosure, a switch, network management equipment, and a small UPS.  This
+should total less then \$15,000.
+
+The TCO of this solution over 3 years would be approximately \$247,400 and a
+normalized value of \$65.97 per Mbit/s per year.  This offers a TCO 2.5 times
+lower then a leased OC-12c at 5 times the relative value per Mbit/s.
+
+\appendix
+
+\section{Map of Maui}
+
+\includegraphics[width=20cm]{pics/haleakala_wireless_map.ps}
+
+%\bibliographystyle{plain}
+%\bibliography{panstarrs}
+
+\end{document}