Azure SLA stands for Service Level Agreement, which is an agreement between Microsoft Azure and the customer regarding the level of service that Microsoft Azure will provide.
The Azure SLA provides uptime guarantees for different Azure services. For example, Azure VMs have an SLA of 99.9% uptime, which means that Microsoft Azure guarantees that the VM will be available at least 99.9% of the time during a given month.
To calculate the SLA uptime percentage, you can use the following formula:
SLA uptime percentage = (total minutes in a month – total minutes of downtime) / total minutes in a month
Let’s take an example to understand this better. Suppose you have an Azure VM that has an SLA of 99.9% uptime, and you experienced 10 minutes of downtime in a month.
Total minutes in a month = 30 days * 24 hours * 60 minutes = 43,200 minutes
SLA uptime percentage = (43,200 – 10) / 43,200 = 99.98%
This means that Microsoft Azure has met its SLA for the VM, as the uptime percentage is greater than 99.9%. If the uptime percentage had been less than 99.9%, the customer would be eligible for SLA credits or compensation as per the terms of the SLA.