User:Sj/Use cases

some more tricky cases.

at school

• at school 5 days a week 30 weeks a year. can come back outside of school hours another 4-5 days a month.
• Connected to a school server > 60% of the day
• Has ~20M of memory and ~50M of disk for transient use?
• Has access through the school server to a shared 56k up/downlink [100 ways] for 1-2 hours a day five days a week

at home

• every day for >8 hours
• within 1km of a shared power source (may not be free; say a car battery multiplexer or bike generator)
• within 300m of at least 1 other XO in 50% of cases
• NB: not always coming back to proximity of a server in the near future.

  regularly a) not going to be in range of a server in the next few days but b) in range of another XO

socializing

• every day for >1 hour
• within 300m of a half-dozen XOs

  regularly not going to be in range of a server in the successive few days

school server

• an access point for 30-100 XOs, sharing a 56k to 2mbps line
• storage of 50-200GB for a digital library and backups
• regularly part of a 3-server setup, one per channel