Spot Instances provide Amazon with a flexible way to sell extra capacity. The instances are acquired through a bidding process in which the customer specifies a price per hour he is willing to pay. When an EC2 instance becomes available at that price, the customer's instance will run.
What is an EC2 Spot instance best used for?
Spot instances are ideal for stateless, error-tolerant, or flexible applications like data analysis, batch jobs, background processing, and optional tasks. These instances are closely integrated with AWS services like Auto Scaling, EMR, ECS, CloudFormation, Data Pipeline, and AWS Batch.
Are Spot instances worth it?
While Spot Instances are too unpredictable for most web servers and databases, they are a great way to save money on flexible or fault-tolerant tasks and add capacity to existing resources.11 May 2020
Do spot instances get terminated?
If the Spot price increases above your bid price, capacity is no longer available, or the spot request has constraints that can't be met, then the Spot Instance can be terminated. For more details about the reasons a Spot Instance can be interrupted, see How Spot Instances work.30 Oct 2019
How long does a spot instance last?
Regular spot pricing—instances can be terminated with 2 minutes notice. Defined duration—you can get a spot instance guaranteed to run for a period of 1-6 hours. The longer the defined duration, the lower the discount provided for the spot instance.
What happens when your spot instance is chosen by AWS for termination?
A termination notice is created the moment your Spot Instance has been marked for termination and indicates the time when Amazon EC2 will shut down your instance. Termination notices are provided on a best efforts basis; in rare cases, Spot Instances might be terminated without a two-minute termination notice.5 Jan 2015
How often are spot instances reclaimed?
The average frequency of interruption across all Regions and instance types is <5%. Short Answer is "Forever" - As soon as the spot instances are interrupted the hardware capacity is reclaimed.6 Dec 2018
What is a Spot instance?
What are Spot Instances? An AWS EC2 Spot Instance is an unused EC2 instance which is available for less than the On-Demand price. Spot instances are up to 90% cheaper than On-Demand instances, which can significantly reduce your EC2 costs. A Spot Price is the hourly rate for a Spot instance.
What is a Spot instance on AWS and what is the difference from reserved instance?
An AWS EC2 Spot Instance is an unused EC2 instance which is available for less than the On-Demand price. Spot instances are up to 90% cheaper than On-Demand instances, which can significantly reduce your EC2 costs. A Spot Price is the hourly rate for a Spot instance.
What is the difference between a spot instance and an on Demand instance?
A Spot Instance is an instance that uses spare EC2 capacity that is available for less than the On-Demand price. Because Spot Instances enable you to request unused EC2 instances at steep discounts, you can lower your Amazon EC2 costs significantly.
How do I know what EC2 instance I have?
To find an instance type using the console Open the Amazon EC2 console at https://console.aws.amazon.com/ec2/ . From the navigation bar, select the Region in which to launch your instances.
What is the difference between EC2 Dedicated Instances and Reserved Instances?
Dedicated instances may share hardware with other instances from the same AWS account that are not Dedicated instances. Pay for Dedicated Instances On-Demand, save up to 70% by purchasing Reserved Instances, or save up to 90% by purchasing Spot Instances.
Are spot Instances cheaper than reserved?
While it's been proven that even Reserved EC2 instances are cheaper than their On-Demand counterparts, it turns out Spot Instances are additionally capable of pushing their discounts beyond the reach of the Reserved Instances.25 Aug 2021