If each of two independent file servers has a reliability of 93% and either alone can run the web site, then the overall web site availability is

Incomplete

To calculate the overall web site availability, we can use the concept of "system reliability" or "combined reliability" for two independent components.

First, let's define the terms:

- Reliability: The probability that a component or system will function correctly and perform its desired functions without failure for a specified period.

- Availability: The proportion of time that a system or component is operational and can be used to perform its intended function.

Now, let's calculate the overall web site availability using the reliability values of the two file servers.

1. Calculate the probability of failure for each file server:
- The reliability of each file server is 93%, which means the probability of failure for each file server is 100% - 93% = 7% or 0.07.

2. Calculate the probability of both file servers failing simultaneously:
- Since the file servers are independent, we can multiply their failure probabilities to find the probability of both failing.
- So, the probability of both file servers failing is 0.07 * 0.07 = 0.0049 or 0.49%.

3. Calculate the availability of the web site:
- The availability of the web site is equal to 100% minus the probability of both file servers failing.
- So, the web site availability is 100% - 0.49% = 99.51%.

Therefore, the overall web site availability is approximately 99.51% when each of the two independent file servers has a reliability of 93%.