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I'm not sure why people are using EBS with their databases. If you already have replication properly set up, what does it buy you except for performance problem

by latch 15y ago

I'm not sure why people are using EBS with their databases. If you already have replication properly set up, what does it buy you except for performance problems? Chris Westin, of 10gen, blogged about this a while ago: https://www.bookofbrilliantthings.com/blog/what-is-amazon-ebs-for https://www.bookofbrilliantthings.com/blog/what-is-amazon-eb... In fairness though, 10gen's official stance is to use EBS. I think that's a mistake, and I think maybe they do it for extra safety.

gatesvp1 15y ago
The big thing here is cost. > If you put the above rules together, you can see that the minimum MySQL deployment is four servers: two in each of two colos... The ideal scenario is to have 4 "fully equipped" nodes, 2 in each data center. That means having 3 pieces of expensive "by the hour" hardware sitting around doing basically nothing. (and paying 4-5k / computer for MongoDB licenses) In that scenario you can have everything on instance store and live with 4 copies on volatile storage. Of course, no start-up wants to commit that many resources to a project. It's far cheaper just to use EBS and assume that the data there is "safe". Is it bad practice, would I avoid EBS like the plague? You bet! But it's definitely cheaper and that's hard to beat.