Four nines or 99.99% availability allows 52 minutes, 36 seconds downtime per year. Three nines or 99.9% availability allows 8 hours, 46 minutes downtime per year. Two nines or 99% availability allows 3 days, 15 hours and 40 minutes downtime per year. One nine or 9% availability allows over 332 days of downtime per year
| Availability % | Downtime per year | Downtime per quarter |
|---|---|---|
| 99.999% ("five nines") | 5.26 minutes | 1.31 minutes |
| 99.9999% ("six nines") | 31.56 seconds | 7.89 seconds |
| 99.99999% ("seven nines") | 3.16 seconds | 0.79 seconds |
| 99.999999% ("eight nines") | 315.58 milliseconds | 78.89 milliseconds |
How much downtime is allowed per year?
Four nines or 99.99% availability allows 52 minutes, 36 seconds downtime per year. Three nines or 99.9% availability allows 8 hours, 46 minutes downtime per year. Two nines or 99% availability allows 3 days, 15 hours and 40 minutes downtime per year. One nine or 9% availability allows over 332 days of downtime per year
What does SLA level of 99% uptime mean?
SLA level of 99.95 % uptime/availability results in the following periods of allowed downtime/unavailability: The SLA calculations assume a requirement of continuous uptime (i.e. 24/7 all year long) with additional approximations as described in the source.
What does 99 9 percent uptime mean?
Furthermore, what does 99.9 percent uptime mean? Uptime is the amount of time that a service is available and operational. Uptime is generally the most important metric for a website, online service or web based provider and is expressed as a percentage such as '99.9%'. For example a 99.9% uptime equates to 43 minutes and 50 seconds of downtime.
How much downtime does 99 percent availability deliver?
Most availability solutions deliver 99 percent — which may sound pretty good to most organizations until you realize 99 percent means 87.6 hours of unplanned downtime per year. According to research from the Aberdeen Group, the average cost of downtime due to data loss can amount to more than $163,000 an hour for companies.
How much downtime is 99.5 availability?
What does availability/uptime mean in the real world?Availability %Downtime per yearDowntime per month*99%3.65 days7.20 hours99.5%1.83 days3.60 hours99.8%17.52 hours86.23 minutes99.9% (“three nines”)8.76 hours43.2 minutes7 more rows•May 6, 2010
How many minutes per month of downtime is 99.99 availability?
An uptime of 99.99% translates to about five minutes of total downtime per month.
How do you calculate downtime percentage?
The formula for the uptime percentage is (uptime + unknown) / (uptime + downtime + unknown), where uptime, downtime, and unknown are given in seconds.
What is the expected downtime for an SLA of 99.95 %?
SLA level of 99.95 % uptime/availability results in the following periods of allowed downtime/unavailability: Daily: 43s. Weekly: 5m 2s. Monthly: 21m 54s.
How many hours is 99.9 downtime?
Percentage calculationAvailability %Downtime per yearDowntime per month99.8% ("two and seven eighths nines")17.53 hours87.66 minutes99.9% ("three nines")8.77 hours43.83 minutes99.95% ("three and a half nines")4.38 hours21.92 minutes99.99% ("four nines")52.60 minutes4.38 minutes12 more rows
How do you get 5'9 availability?
Achieving five-nines availabilityBuy the best equipment that's the easiest to repair. ... Automate, where possible, to monitor network performance and flag potential malfunctions. ... Pay attention to software. ... Test backup and disaster recovery plans to make sure they are sufficient.
How is downtime availability calculated?
Availability = Uptime ÷ (Uptime + downtime) That asset also had two hours of unplanned downtime because of a breakdown, and eight hours of downtime for weekly PMs. That equals 10 hours of total downtime.
How is downtime measured?
The first way to measure your equipment downtime is in actual time. For a given asset (or set of assets), record the amount of time during each month that the asset is broken down. Keeping a running tally and comparing it to past months will help you know when an asset is having more issues than normal.
What does 99.9% SLA mean?
About the SLA Uptime Calculator Uptime is generally the most important metric for a website, online service or web based provider and is expressed as a percentage such as '99.9%'. For example a 99.9% uptime equates to 43 minutes and 50 seconds of downtime.
How do you get 99.99 availability in Azure?
Azure VMs SLA But, if two or more virtual machines are deployed in an Availability Set, the guaranteed connectivity rises to 99.95 percent for at least one instance. If VMs are deployed in two or more Availability Zones, guaranteed connectivity rises again to 99.99 percent.
How many 9's of availability are required?
five ninesThe accepted availability standard for emergency response systems is 99.999% or “five nines” – or about five minutes and 15 seconds of downtime per year (see table below). To achieve five nines, all components of the system must work seamlessly together.
How do you calculate 99.99 uptime?
The SLA calculations assume a requirement of continuous uptime (i.e. 24/7 all year long) with additional approximations as described in the source....Uptime and downtime with 99.99 % SLADaily: 8s.Weekly: 1m 0s.Monthly: 4m 22s.Quarterly: 13m 8s.Yearly: 52m 35s.
How many hours of downtime is 99.9%?
99.9% translates to around 8.76 hours of unplanned downtime per year. That’s a massive improvement over nearly 90 hours of downtime at 99 percent, but for many companies, losing a business day in productivity per year is still too much for their bottom line to bear.
How many hours of downtime does a business need?
Most availability solutions deliver 99 percent — which may sound pretty good to most organizations until you realize 99 percent means 87.6 hours of unplanned downtime per year.
What happens if a manufacturer does not have data to support the continual monitoring of a product?
If a manufacturer does not have data to support the continual monitoring of a product, that product cannot be released. Therefore, any downtime within these processes results in revenue lost. This critical importance of uptime and data integrity led Kaye to rely on Stratus to be an integral part of their solutions.
How much availability does a cluster have?
Clusters can range from 99.95 to 99.99% availability depending on how well built the cluster is and how quickly failover can be achieved. Some clustered applications such as databases can’t failover quickly enough because they must check file integrity and replay transactions logs after a failure, which delays application start-up.
What is the next 9 for 99.99%?
The secret to achieving the next “9” for 99.99% is cluster technology . Often referred to as high availability solutions, clusters are essentially two or more physical servers connected in a single network. If one server fails, application support resumes on a second server.
Who is Dominique Todd?
Dominique Todd acts as the Marketing Communications Specialist at Stratus Technologies. She is responsible for developing SEO-friendly content based on topics surrounding Edge computing. Dominique also works with internal subject matter experts and external agencies to develop industry leading content that supports social media and media coverage efforts.
Is it possible to test every vile for quality in pharmaceuticals?
In pharmaceutical manufacturing, it is typical for products to be made in extremely large batches, yet with large batch production it’s impossible to test every vile for quality. This is why, in today’s pharmaceutical world, quality needs to be built directly into the manufacturing process design.
