Menu
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
474
RIs provide you with a significant discount (up to 72%) compared to On-Demand instance pricing. You have the flexibility to change families, OS types, and tenancies while benefitting from RI pricing when you use Convertible RIs.
Reserved Instances – Reduce your Amazon EC2 costs by making a commitment to a consistent instance configuration, including instance type and Region, for a term of 1 or 3 years. Spot Instances – Request unused EC2 instances, which can reduce your Amazon EC2 costs significantly.
In terms of compute options and configurations, Reserved Instances and On Demand instances are the same. The only difference between the two is that a Reserved Instance is one you rent (“reserve”) for a fixed duration, and in return you receive a discount on the base price of an On Demand instance.
At AWS re:Invent 2020, we launched Amazon EC2 M5zn instances which use second-generation Intel Xeon Scalable (Cascade Lake) processors with an all-core turbo clock frequency of up to 4.5 GHz, which is the fastest of any cloud instance.
Despite its name, "reserved instance" is a billing construct, not an instance type. When you purchase a reserved instance, no instance is started. It simply affects the price you pay for a standard on-demand instance that matches the availability zone, instance type, operating system of the reserved instance purchase.
Purchasing a reserved instance can reduce the hourly price you pay for an on-demand instance that has already been running for months. If you terminate that on-demand instance, the reserved instance pricing switches to any other on-demand instance that is running and matches the specs.
Spot instances are the same as on-demand instances except in when they are started/terminated and how much they cost.
100
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
