Uptime SLA Debates

The cluster focuses on discussions about service uptime guarantees, the meaning of 'nines' (e.g., 99.9%, 99.99%), allowable downtime calculations per year or month, and whether these SLAs are adequate or embarrassing for SaaS and cloud providers.

➡️ Stable 0.6x DevOps & Infrastructure
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20
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#1361
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Keywords

e.g ISP S3 facebook.com youtu.be PS AWS uptime.is amazon.com google.com uptime 99 downtime 100 durability guarantee year 99 99 availability hours

Sample Comments

avoid3d Jun 19, 2014 View on HN

Perspective: 1 hours downtime a year is already better than 4 9s

ohashi Oct 2, 2021 View on HN

99% uptime guarantee is embarrassingly low.

rexicus Jun 9, 2017 View on HN

There goes the 99.95% uptime guarantee.

Egregore Apr 27, 2012 View on HN

Network availability 99% is very bad, it's about 3 days/year of downtime. (If you have clients - they will kill you)

WJW Mar 9, 2022 View on HN

99.9% uptime is still more than 40 minutes downtime per month. According to their status page they are at 99.93% uptime for the current quarter even with the current incident.

rmc Jun 19, 2013 View on HN

100% uptime is impossible. Remember you can get 99% uptime (2 nines) if you're down for 4 days in a year.

kingnothing Oct 9, 2007 View on HN

The gist of it is a 99.9% uptime guarantee.

RKearney Sep 11, 2012 View on HN

Nothing, since 99.9% allows them nearly 9 hours of downtime a year.

markus_zhang Dec 7, 2021 View on HN

Just curious does it still make sense to claim that up time is X numbers of 9? (e.g. 99.999%)

jlgreco Oct 29, 2013 View on HN

They only guarantee 85.66% uptime. They need to sleep too!