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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#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!