IT for Information Professionals

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Presentation given to the CLSIG Professional Development Club, London, 22 September 2008.

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IT for Information Professionals

  1. 1. IT for Info Pros <ul><li>Demystifying your IT infrastructure </li></ul><ul><li>Ben Summers </li></ul>
  2. 3. Your desktop computer
  3. 4. Networking Switch
  4. 5. Network Ethernet cable
  5. 6. Network Base station
  6. 7. L ocal A rea N etwork
  7. 8. Servers
  8. 9. Desk-side servers
  9. 10. Rack mounted server
  10. 11. Client / server architecture Clients Server View and edit Store and process
  11. 12. Software and the OS Operating system Application software Operating system Server software Desktop Server Desktop Hardware Server Hardware Firmware (BIOS) Firmware (BIOS)
  12. 13. Software Operating system Server software (eg Web Server) Firmware/BIOS Operating system Applications (eg Web Browser) Firmware/BIOS Desktop Server Network
  13. 14. L ocal A rea N etwork
  14. 15. W ide A rea N etwork
  15. 16. ISP ISP ISP ISP Internet Leased Line / ADSL Router
  16. 17. Bandwidth LAN ADSL Inter-ISP 100Mb/s 0.5Mb/s send, 6Mb/s receive 100 to 1000Mb/s
  17. 18. ISP ISP ISP ISP Internet
  18. 19. Data centres
  19. 20. Data centres (Maximilien Brice; Claudia Marcelloni, © CERN)
  20. 21. <ul><li>Hubs where lots of ISP meet together </li></ul><ul><li>Cheap to connect between ISPs </li></ul><ul><li>High security </li></ul><ul><li>Air conditioning and backup power </li></ul>Data centres
  21. 22. ISP ISP ISP ISP Internet
  22. 23. IP Address 192.168.99.201
  23. 24. Only four billion <ul><li>0.0.0.0 </li></ul><ul><li>to </li></ul><ul><li>255.255.255.254 </li></ul>
  24. 25. Private IP addresses <ul><li>10.0.0.0 – 10.255.255.255 </li></ul><ul><li>172.16.0.0 – 172.31.255.255 </li></ul><ul><li>192.168.0.0 – 192.168.255.255 </li></ul>
  25. 26. ISP ISP ISP ISP Internet Public addresses Private NAT
  26. 27. Network Address Translation 10.0.0.12 (private) NAT 17.0.0.29 (public) ISP Rest of the internet
  27. 28. Security <ul><li>Because everyone makes mistakes </li></ul>
  28. 29. Making mistakes <ul><li>Developers </li></ul><ul><li>System administrators </li></ul>
  29. 30. ISP ISP ISP ISP Internet Firewall goes here
  30. 31. Putting it altogether Operating system (Mac OS X) Operating system (Solaris) Desktop Server Network Desktop Hardware Server Hardware Firmware (BIOS) Firmware (BIOS) Application (Firefox web browser) Server software   (Apache web server)
  31. 32. ISP ISP ISP ISP Internet
  32. 33. Magic?
  33. 34. Good problem reports <ul><li>Describe accurately and comprehensively </li></ul><ul><li>Don’t jump to diagnoses </li></ul><ul><li>Don’t panic! </li></ul>
  34. 35. Current IT issues <ul><li>Virtualisation </li></ul><ul><li>Hosted services/cloud computing </li></ul><ul><li>Multi core and hybrid processors </li></ul><ul><li>Semantic web </li></ul><ul><li>The future of email </li></ul><ul><li>Why techies dislike Microsoft </li></ul><ul><li>Digital Rights Management </li></ul><ul><li>Open source software </li></ul><ul><li>Green computing </li></ul><ul><li>Mobile devices </li></ul>
  35. 36. IT for Info Pros <ul><li>Demystifying your IT infrastructure </li></ul><ul><li>Ben Summers </li></ul><ul><li>[email_address] </li></ul><ul><li>www.oneis.co.uk/blog </li></ul>

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