ACME: Availability
Availability: failures are common
- Well designed and manufactured HW: >1% fail/year
- Well designed and tested SW: > 1 bug / 1000 lines
- Well trained people doing difficult tasks: up to 10%
- Well run co-location site (e.g., Exodus): 1 power failure per year, > 1 network outage per year
- Denial of service attacks => routine event