3 ms·
You got resilience pretty wrong here. If you start with a single PC at home and a single ISP, you actually get like three nines of availability, not everywhere
by zzzcpan 8y ago
You got resilience pretty wrong here. If you start with a single PC at home and a single ISP, you actually get like three nines of availability, not everywhere of course, but in urban areas you mostly do. Which is almost exactly what a datacenter can get you. But interestingly enough, you can get even better resilience at home than in a datacenter by having just another PC connected to another independent ISP. That's because an ISP is a pretty significant point of failure and you can't get another independent ISP in a datacenter (not that you need it, as using a different independent datacenter instead is much better for resilience).
- pushpop 8y agook, let’s play out your scenario: so now you need to buy two houses in two different towns so you get two different ISPs and running your server on two different power substations (since you’re no longer building that resilience in at the server room level). That is still going to cost you way way way more than deploying something on AWS in a multi a-z or multi region. And you still haven’t addressed the issue of secure out-of-band management. The only benefit with your solution is that the second home is at least an capital asset; but even still, it’s more than any small or medium sized company would be willing to stump up (I say this from experience since I’ve worked on disaster recovery solutions for SMBs in the pre-cloud computing era)
- zzzcpan 8y agoI guess you didn't get my point. You can subscribe to multiple independent ISPs in one house. You don't get that while renting a server in a datacenter.
- pushpop 8y agoI did get your point, however you’re still dependent on one pipe into the house which then doesn’t solve the issue I highlighted. You could buy additional leased lines with a different physical route out but those are not cheap either and you still haven’t solved the issue of redundancy in any other system aside your gateway.