Uptime Calculator - SLA Calculator (2024)

FAQs

How to calculate uptime SLA? ›

Most businesses do not need 99.999% ("five-nines") uptime, or even 99.99% ("four-nines"). 99.5% ("two-and-a-half nines") uptime is very decent.

Calculating uptime is straightforward — it's the amount of time your system has been functional. But to get the availability percentage, you'll need to divide the uptime by the total period you're measuring and multiply by 100. 📈 Availability Percentage: [(8,752 hours ÷ 8,760 hours) x 100] = 🎯 99.91% Uptime!

SLA formula: (365 - {downtime days}) / 365 * 100 = SLA where 365 is 365 days which translates to yearly 24/7 service uptime.

SLA Uptime Metrics

First and foremost, clients of IT service providers want to be sure that the service remains up. The industry standard is five 9's, or 99.999% availability.

As you can tell, the difference between 99.99% availability and 99.9% availability means an additional 7 hours of acceptable downtime for that service everywhere. That breaks down further to 1 minute and 26 seconds of downtime everyday, or 10 minutes and 48 seconds every week.

The 100% SLA, doesn't mean that the server won't have issues. It simply means that, in case of problems with Cloudflare (they can't serve traffic, because they have issues internally) they will refund you the percentage of the price you have paid them. The server remaining up is your responsibility and yours alone.

A Cisco router has been reported to have been running continuously for 21 years as of 2018. As of April 11, 2023, the uptime has increased to 26 years, 25 weeks, 1 day, 1 hour, and 8 minutes until the router was later decommissioned and the final screenshot of the uptime was 26 years, 28 weeks, 2 days, and 6 minutes.

What is the industry standard for uptime? ›

One of the most common standards for uptime is "five 9s," meaning that your network is operational 99.999% of the time. It is easy to calculate uptime and downtime. For example, say your network was monitored for one day (24 hours = 86,400 seconds) and experienced 5 minutes of downtime (300 seconds).

SLA level of 99.5 % uptime/availability results in the following periods of allowed downtime/unavailability: Daily: 7m 12s. Weekly: 50m 24s. Monthly: 3h 37m 21s.

For example, “5 nines uptime” means that a system is fully operational 99.999% of the time — an average of less than 6 minutes downtime per year. The chart shows what impact various availability levels have on your server downtime. Can you survive several hours of downtime every year?

Uptime percentage is calculated using the formula: (Total time - Downtime) / Total time x 100, and factors like total time measured and downtime affect the calculation.

Achieving high availability is essential for maintaining 99.9% uptime. This approach involves several key components: Use redundant systems and components to ensure that if one part fails, another can take its place without affecting your application's overall availability.

Uptime percentage is calculated using the formula: (Total time - Downtime) / Total time x 100, and factors like total time measured and downtime affect the calculation.

The most basic formula is to divide the total uptime (the time that the service is available) by the total time (the time that the service is expected to be available) and multiply by 100. For example, if your service is available for 99 hours out of 100 hours, then your availability is 99%.

SLA Uptime Metrics

The industry standard is five 9's, or 99.999% availability.

Availability = Uptime ÷ (Uptime + downtime)

For example, let's say you're trying to calculate the availability of a critical production asset.