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Am I missing something or does this not include options for the reserved instances? Because _that_ is the part of the EC2 pricing that is most confusing to me.
by aristidb 13y ago
Am I missing something or does this not include options for the reserved instances? Because _that_ is the part of the EC2 pricing that is most confusing to me.
- sitkack 13y agoReserved instances are most likely for people not like us. You should be modeling your apps to take advantage of spot pricing not reserved.
- velodrome 13y agoIs there a reason you specifically want spot pricing over reserved? Do you save more money?
- deleted 13y ago[deleted]
- grosskur 13y agoYes, spot instances are significantly cheaper than even reserved instances. For example, a 3-year heavy utilization cc2.8xlarge instance costs $0.49/hr (with $10K up-front!), whereas its costs only $0.27/hr on the spot market (with nothing up-front). Your spot instance could run happily for several days or it could get killed 5 minutes later if there's a price spike. You have to accept uncertainty in exchange for the cheaper price. Combining reserved instances with spot instances in the same pool can be a good strategy because you get cost-savings while also maintaining a minimum capacity. You can also spread spot instances over different availability zones, since spot price varies across zones. FYI, I created an app that charts spot prices over time across various instance types, regions, and availability zones: http://ec2price.com/ http://ec2price.com/
- kpras 13y agoTo get an idea of relative savings in reserved instance prices compared to ondemand ones , you can try http://promptcloud.com/ec2-ondemand-vs-reserved-instance-pricing.php http://promptcloud.com/ec2-ondemand-vs-reserved-instance-pri... . It was HN couple of months back.