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I’m considering purchasing an Amazon AWS EC2 reserved instance. Does any one know of any performance benefits for reserved vs. on-demand, spot instances? Or is this simply a pricing difference? Do reserved instances get spun up on VMs with less congestion and that sort of thing is what I’m thinking about.
Thanks,
Michael
Spot instances are basically when amazon has unused resources they can sell them at a slightly lower price to hopefully get those used up. The issue with spot instances is that they can be shut off at any time so you’re taking a risk.
Reserved instances are computing power you can purchase upfront at a discounted rate. You’re basically saying that you’re going to use this type of system for 1 or 3 years or if you’re not going to use it you want to ensure that you can use it at any time.
On-demand is the default for most people, I think. They’re there. They’re available when you need them and when you don’t need them you stop paying for them.
If you purchase the same types of machine configs for each type of instance then there is no performance difference, only price.