Five nine purity refers to a purity level of 99.999%. This term is commonly used in two main contexts:
High Availability of Services
In the context of service availability, five nines indicates that a service is operational 99.999% of the time. This translates to very minimal downtime, typically around 5 minutes per year. For critical systems and services, achieving five nines availability is a key goal.
Substance Purity
In the context of substance purity, five nines means that a material is 99.999% pure. This level of purity is essential in many applications, particularly in scientific research, semiconductors, and other high-tech industries where even trace impurities can significantly impact performance.
Here's a breakdown of what 99.999% purity means:
| Purity Level | Percentage | Downtime per year (for services) |
|---|---|---|
| Five Nines | 99.999% | Approximately 5 minutes |
The term "nine purity" refers to a purity of 99.999%. Therefore, "five nine purity" is simply another way to say 99.999% purity.
