1. What is SLA Downtime Calculation?

The SLA (Service Level Agreement) Downtime calculation determines the allowable unplanned outage time for a service based on its SLA percentage. It helps organizations understand their service availability commitments.

2. How Does the Calculator Work?

The calculator uses the downtime formula:

Where:

• \( Total\ Time \) — The total time period being evaluated (hours)
• \( SLA \) — The service level agreement percentage (0-100%)

Explanation: The formula calculates the maximum allowed downtime by subtracting the SLA percentage from 100% and applying it to the total time period.

3. Importance of Downtime Calculation

Details: Understanding potential downtime helps in service planning, risk assessment, and meeting contractual obligations. It's crucial for IT service management and cloud service providers.

4. Using the Calculator

Tips: Enter the total time period in hours and the SLA percentage (0-100). Both values must be valid (time > 0, SLA between 0-100).

5. Frequently Asked Questions (FAQ)

Q1: What is considered a good SLA percentage?
A: Typical SLAs range from 99% to 99.999% ("five nines"). 99.9% allows about 8.76 hours downtime/year.

Q2: How does this differ from uptime calculation?
A: Uptime is simply SLA percentage, while downtime calculates the inverse - the allowed outage time.

Q3: Should planned maintenance be included?
A: Typically no - SLAs usually cover unplanned downtime only. Check your specific agreement terms.

Q4: How to calculate monthly downtime from annual SLA?
A: Use 730 hours as total time (average month) with the annual SLA percentage.

Q5: What about partial outages?
A: Partial outages are often prorated based on service impact percentage during the outage period.