Uptime Realities in the Internet World
schnurble writes: "My former boss has written an interesting article on the realities of uptime in the Internet World. It poses the idea that four and five nines of reliability are too expensive to be realistic, especially in the post dot-bomb economy. It's an interesting read, especially if you answer to an 800lb gorilla for outages and uptime issues."
Let me give you a hypothetical case. One of our clients does about $50k/month on their web site. When the site was built, they were only expecting $10000-$15000/month. At the time, NN4 compatibility wasn't important, because the extra cost ($10k) wasn't going to be worth it. With NN4 sitting between 5% and 10% each month, they have decided that NN4 compatibility is important in the next version.
When we launched, 3 days of downtime a month was considered okay. It was considered a better choice than spending an extra $5k on hardware for redundancy. Well, when the site broke $40k/month, we immediately decided that that was no good and invested in the redundancy.
The site has had a few 15 minute outages over the past 6 months, and a 1 day outage over a holiday weekend (not a big deal). However, if the site doubles in revenue again, downtime is becoming less acceptable, and we'll drop $10k to avoid it.
If your site sucks and no one visits, downtime doesn't matter. If you are making lots of money, downtime does matter. $10k on hardware is worth it if the downtime would cost you $25k?
Alex