Experimental procedure (2)
Experiment
- an operating system was selected
- users were given unlimited time for familiarization
- for 45 minutes, the following steps were repeated:
- system selects random 1-5 minute delay
- at end of delay, system emulates disk failure
- user must notice and repair failure
- includes replacing disks and initiating/waiting for reconstruction
- the experiment was then repeated for the other two operating systems