Refer to the Exhibit:
What type of FC port connects each FCIP gateway to each FC SAN?
A Fibre Channel switch has eight ports and all ports must be operational 24 hours 7 days. However, a failure of Port 5 occurs on a particular week as follows:
Monday = 11 AM to 3 PM -
Thursday = 6 AM to 11 AM -
Saturday = 11 AM to 4 PM -
What is the availability of Port 5 in that week?
A Fibre Channel switch has eight ports and all ports must be operational from 6 AM to 6 PM, Monday through Friday.
However, a failure of Port 4 occurs with the week as follows:
Monday= 11 AM to 1 PM
Wednesday= 5 PM to 10 PM
Thursday= 7 AM to 10 AM
Saturday= 11 AM to 1 PM
What is the availability of Port 4 in that week?
To calculate availability, you need to calculate the total number of hours that the port is operational and divide it by the total number of hours in the week, which is 168. The total number of hours that Port 4 is operational in that week is 106.7, so the availability is 106.7/168 = 86.7%.
What is a benefit of using a Scale-Out NAS system vs. general purpose file servers?
An Ethernet switch has eight ports and all ports must be operational for 24 hours from Monday through Friday.
However, a failure of Port 7 occurs as follows:
Monday=4 PM to 11 PM
Wednesday= 2 PM to 10 PM
Friday= 5 AM to11 AM
What is the MTTR of Port 7?
To calculate MTTR, we need to convert the hours into minutes. Here are the steps:
Monday: Port 7 was down from 4 PM to 11 PM. That's 7 hours or 420 minutes.
Wednesday: Port 7 was down from 2 PM to 10 PM. That's 8 hours or 480 minutes.
Friday: Port 7 was down from 5 AM to11 AM. That's 6 hours or 360 minutes.
Total corrective maintenance time = 420 + 480 + 360 =1260 minutes
Number of repairs =3
MTTR = Total corrective maintenance time / Number of repairs
MTTR =1260 / 3 =420 minutes
Therefore, the MTTR of Port 7 is420 minutes.
