# Question: What Does 3 Nines Mean?

## What does 4 nines mean?

Just to give a glimpse of what it means: Five-nines or 99.999% availability means 5 minutes, 15 seconds or less of downtime in a year.

Four nines or 99.99% availability allows 52 minutes, 36 seconds downtime per year..

## Is number 9 lucky?

Be it ‘navaratri’ or ‘navagrahas’, number nine is a significant part of the Indian psyche from time immemorial. … Not to talk of the numeral 9, which is often cited as a ‘lucky number’ for many these days! The ‘Fruit of the Spirit’ comprises nine graces: love, peace, suffering, gentle, good, faith, meek and temperance.

## How many 9s is AWS?

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).

## Why is 9 a sacred number?

The number 9 is revered in Hinduism and considered a complete, perfected and divine number because it represents the end of a cycle in the decimal system, which originated from the Indian subcontinent as early as 3000 BC. … Nine is a significant number in Norse Mythology.

## What does 5 nines mean?

From Wikipedia, the free encyclopedia. Five nines, commonly taken to mean “99.999%”, may refer to: High availability of services, when the downtime is less than 5.26 minutes per year. Nine (purity), a 99.999% pure substance.

## What does 777 mean?

Angel Number 777 indicating the path of following your guardian angels 2. Repeatedly Seeing the Angel Number 777 means you’re Going to right way to achieving you Success. 3. It also Indicating negative connotation Due to gambling and thats help to know as positive number 4.

## How do you measure downtime?

Downtime is any time the equipment is not available for production, including planned and unplanned downtime. To calculate system availability for a certain period of time, divide an asset’s total amount of uptime by the sum of total uptime and total downtime.

## What is high uptime?

High availability refers to a system or component that is operational without interruption for long periods of time. High availability is measured as a percentage, with a 100% percent system indicating a service that experiences zero downtime. … But four nines uptime is still 52 minutes of downtime per year.

## How do you calculate availability?

Availability = Uptime ÷ (Uptime + downtime) For example, let’s say you’re trying to calculate the availability of a critical production asset. That asset ran for 200 hours in a single month. That asset also had two hours of unplanned downtime because of a breakdown, and eight hours of downtime for weekly PMs.

## What does 99% uptime mean?

If your business uses a service with a 99% uptime guarantee that means you should expect: 14 minutes, 24 seconds of downtime every day; 1 hour, 40 minutes and 48 seconds of downtime every week; 6 hours, 43 minutes and 12 seconds of downtime every month and.

## What does 3 9s mean?

Availability measurement is subject to some degree of interpretation. … However, given the true definition of availability, the system will be approximately 99.9% available, or three nines (8751 hours of available time out of 8760 hours per non-leap year).

## What is a good uptime percentage?

Represented as a ratio of the time available divided by the total time, providers calculate the ratio in monthly or yearly increments. Although 100% uptime is the goal, the industry considers 99.999% uptime as high availability.

## Is 9 an unlucky number in technology?

9: Just as the number four has a bad-luck soundalike in Chinese, 9 is feared in Japan because it sounds similar to the Japanese word for torture or suffering.

## What the number 8 means?

Number 8 has a specific meaning and angels will use this number in order to send you a message. … Number 8 is also considered to be a symbol of infinity, which means that it could be a symbol of infinite energy and love. Also, it is a sign of compasion, self-confidence, self-discipline and decisiveness.

## How many nines is high availability?

Hitting 99.9% availability is better, at just under nine hours of downtime a year. Companies aiming for high availability (HA) talk about four nines (less than an hour of downtime a year), which is what we strived for during my time at Netflix.