What is uptime and why is it so important?

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What is uptime and why is it so important?

Uptime is a term that is used a lot in relation to data centres and colocation, but what does it mean and why is it so important? Continue reading to learn more!


What is uptime?

When choosing the right data centre for your needs, there are a few different things you should look for. One of the most important things to look out for is the amount of ‘uptime’ or ‘availability’ a data centre can provide.

‘Uptime’ is the amount of guaranteed monthly or annual availability a data centre can provide. In the context of a data centre, ‘availability’ is the level to which systems can operate when they are required to. The opposite of uptime is of course downtime – which is the amount of time systems are ‘down’ or not operating to full capacity. Data centres want to avoid downtime and have as much uptime as possible to ensure projects or businesses can stay up and running.

Uptime is measured using percentages. The amount of uptime a certain data centre can provide determines what category or “Tier” the data centre falls under:

Tier 1: 99.671% availability

Tier 2: 99.741% availability

Tier 3: 99.982% availability

Tier 4: 99.995% availability


The higher the availability, the less downtime there will be. For example, if you’re looking at the higher end of the spectrum, a data centre that has 99.999% availability (sometimes known as ‘five nines’) will have 26.30 minutes of downtime per year and 2.19 minutes of downtime per month. On the lower end of the spectrum, a data centre with 99.75% availability will have 21 hours and 54 minutes of downtime per year and 1 hour and 45 minutes downtime per month. Although the difference between the percentages does not seem a lot, it is clear to see the impact that availability has on downtime. It is also important to know that not all data centres provide availability under an SLA agreement meaning you will never be compensated for any downtime.


Why is uptime important?

Uptime is important as it means your servers are up and running to their full functionality. If you’re a business, you may be using your servers host your company websites, run key business software, store important databases, or host emails. These are all important parts of your business, and when downtime occurs, these functions will be temporarily disabled. This can have detrimental effects on your business. Therefore, it is important to have as little downtime as possible to ensure the minimum amount of damage occurs. The amount of downtime can be the difference between a minimal fault and a substantial error that causes big problems for your business.

To ensure the least amount of downtime, you should aim for a data centre with at least 99.9% availability – sometimes known as ‘three nines’.

How does Servacus compare?

At Servacus, we understand how important uptime is, so we work hard to offer the highest levels of availability. As a Tier 3 design data centre, we offer 99.99% availability to our customers. To achieve this, we ensure our servers are kept in the best conditions, with sensors for temperature and fire detection and engineers available to fix any problems as soon as they arise. If the downtime is none scheduled maintenance as part of our SLA you are compensated into your account as credit for your next invoice.

Want to learn more about our services? Get in contact with our team today!

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