This discussion is one of the things that worries me greatly with respect to the FCC and the Open Internet rules.
What is uptime? It’s not like there is a simple definition. I can’t recall the last complete outage on our system that took every customer down, yet at any given time I know for a fact that 0.4% of the customers are down. Why? Who knows - turned off for vacation, weed whacker took out the cable, power issues, etc. Am I supposed to count those? Does one DNS server being down count even though there are 4 of them? If your OS is too stupid to switch DNS servers (yes Windows, I’m referring to you) when one isn’t responding and you can’t get to web pages then the Internet is down for that customer - yet as far as the network is concerned it’s up. Mark Mark > On Jul 13, 2015, at 9:50 AM, Paul Stewart <p...@paulstewart.org> wrote: > > Uptime calculations should be tied to your service objectives which would > answer your question J > > Great question – serveral different ways to answer it … > > From: Af [mailto:af-boun...@afmug.com <mailto:af-boun...@afmug.com>] On > Behalf Of Chuck McCown > Sent: Monday, July 13, 2015 9:12 AM > To: af@afmug.com <mailto:af@afmug.com> > Subject: Re: [AFMUG] Uptime Calculation? > > 99.9 > > > From: Christopher Gray <mailto:cg...@graytechsoftware.com> > Sent: Sunday, July 12, 2015 10:14 PM > To: af@afmug.com <mailto:af@afmug.com> > Subject: [AFMUG] Uptime Calculation? > > When figuring uptime, is a partial outage normally calculated differently > than a complete outage? > > For example, an outage affecting 10% of customers for 1 hour out of 100 > hours... is that typically considered 99% uptime (any outage is considered a > full loss) or 99.9% uptime (only a 10% loss, so only 10% downtime)? > > Thanks - Chris
