Calculate allowed downtime per your Service Level Agreements (SLA).
Adopted from Hexadecimal's SLA Uptime Calculator.
To find out how long a system can be down to meet the five-nines availability requirement (99.999%):
console.log(uptime(99.999));{
secondsPerDay: 'less than a second',
secondsPerWeek: '6 seconds',
secondsPerMonth: '25 seconds',
secondsPerQuarter: '1 minute, 17 seconds',
secondsPerYear: '5 minutes, 15 seconds'
}You can also specify how many days are in a month, quarter, and year:
console.log(uptime(99.999, 31, 92, 366));{
secondsPerDay: 'less than a second',
secondsPerWeek: '6 seconds',
secondsPerMonth: '26 seconds',
secondsPerQuarter: '1 minute, 19 seconds',
secondsPerYear: '5 minutes, 16 seconds'
}