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Another memory trick to calculate the allowed downtime duration for an "-nines" availability percentage is to use the formula seconds per day. For example, 90% ("one nine") yields the exponent 4 − 1 = 3 {\displaystyle 4-1=3} , and therefore the allowed downtime is 8.64 × 10 3 {\displaystyle 8.64\times 10^{3}} seconds per day.
This is average amount of time while the system is not 100% operational because of diagnostic testing that requires down time. For example, an automobile that requires 1 day of maintenance every 90 days has a Mean Active Maintenance Down Time of just over 1%. This is separate from the type of down time associated with repair activities.
Monitoring can cover many things that an application needs to function, like network connectivity, Domain Name System records, database connectivity, bandwidth, and computer resources like free RAM, CPU load, disk space, events, etc. Commonly measured metrics are response time and availability (or uptime), but consistency and reliability ...
Uptime is the opposite of downtime. Htop adds an exclamation mark when uptime is longer than 100 days. It is often used as a measure of computer operating system reliability or stability, in that this time represents the time a computer can be left unattended without crashing or needing to be rebooted for administrative or maintenance purposes.
CKFM-FM (99.9 FM 99.9 Virgin Radio) is a Canadian radio station in Toronto, Ontario.The station is owned by Bell Media.The station airs a contemporary hit radio format, and is the flagship of Canada's "Virgin Radio" stations.
1 troy ounce of four nines fine gold (999.9) Nines are an informal logarithmic notation for proportions very near to one or, equivalently, percentages very near 100%. Put simply, "nines" are the number of consecutive nines in a percentage such as 99% (two nines) [1] or a decimal fraction such as 0.999 (three nines).
WRKZ (99.7 FM), branded 99.7 The Blitz, is a commercial active rock radio station licensed to Columbus, Ohio, and serving the Columbus metro area.It is owned by the North American Broadcasting Company, along with sister stations 920 WMNI and 103.9 WJKR.
WLFP (99.7 MHz, "99.7 The Wolf") is a commercial country music radio station licensed to Memphis, Tennessee, serving the Memphis metropolitan area and much of surrounding West Tennessee, northern Mississippi, and eastern Arkansas.