EC2 Reserved Instances how to merge

Question

Hi,

I have 2 X t4g.nano reserved instances, which I like to merge them to create a t4g.micro RI.
documentation in https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ri-modifying.html is catered only for splitting the larger RIs to smaller RIs.
what I want is to merge smaller RIs to create a bigger one.

Thanks

Nataliya_G · Accepted Answer

If you have Standard RIs, you can only merge them using modification feature if start & expiry dates on both RIs are the same. If, for example, you bought one .nano RI in April, and another .nano RI in July, they will have different start & end dates, so you would not be able to merge them.

this clears why I'm unable to merge. my 2 nano RIs have different start and end dates.

thanks for the help

If you are using Linux/UNIX RIs with Regional scope and Shared tenancy, you don't need to merge them, because they are size flexible and will be applied to your larger running instance with other matching attributes automatically.

However, if both your RIs are Convertible, you can select both of them, and then use the ["**Exchange**"](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ri-convertible-exchange.html) feature to convert them into one bigger instance.

Matt-B · Answer

Hi There
If you are running Linux then you don't have to do anything, the two t4g.nano RI's will apply to your t4g.micro instance.  Please see "Instance Size Flexibility" in the documentation here

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/apply_ri.html#ri-instance-size-flexibility

You can also merge two or more Reserved Instances into a single Reserved Instance. For example, if you have four t2.small Reserved Instances of one instance each, you can merge them to create one t2.large Reserved Instance. For more information, see[ Support for modifying instance sizes](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ri-modifying.html#ri-modification-instancemove).

EC2 Reserved Instances how to merge

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