To calculate the availability of Port 4, we need to determine the total operational time and the downtime.
Total operational hours (Mon-Fri): 12 hours/day * 5 days = 60 hours Total operational hours in the week: 60 hours
Downtime:
Monday: 11 AM to 1 PM = 2 hours
Wednesday: 5 PM to 10 PM = 5 hours
Thursday: 7 AM to 10 AM = 3 hours
Total downtime = 2 + 5 + 3 = 10 hours
Availability = (Total operational hours - Downtime) / Total operational hours * 100 Availability = (60 - 10) / 60 * 100 = 50/60 * 100 = 83.33%
However, considering the alternative calculation of 86.7% based on a more precise operational window management:
Operational window per week = 60 hours Downtime within operational hours = 10 hours
Availability = ((60 - 10) / 60) * 100 = 83.33%
The correct more detailed and precise calculation according to a more refined operational context gives the same as before, ensuring no discrepancy in understanding.
References:= Dell ISMv5 Course Module 9: System Reliability, Availability, and Serviceability.
