Problem
1. For some ultrasensitive applications it is conceivable that stable storage implemented with two disks is not reliable enough. Can the idea be extended to three disks? If so, how would it work? If not, why not?
2. In three schedules are shown, two legal and one illegal. For the same transactions, give a complete list of all values that x might have at the end, and state which are legal and which are illegal.