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Currently I have a db.r5.2xLarge RDS Reserved Instance (Aurora Postgres).

I'm thinking about moving to db.r6g.2xLarge, if I do that will my reserved instance discount still apply?

I looked up on AWS documentation but coudn't find a clear answer.

Maurice
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1 Answers1

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RDS offers size-flexible reserved instances, which allow you to change the size within a class (e.g. r5.2xlarge -> 2* r5.xlarge), but they need to stay within a class.

Because of this, that wouldn't apply to your modification. The other (bigger) problem is that Aurora is not in the list of supported DB Engines for this:

Size-flexible reserved DB instances are available for the following Amazon RDS database engines:

  • MariaDB
  • MySQL
  • Oracle, Bring Your Own License
  • PostgreSQL

— Source

tl;dr: The discount won't apply anymore if you go through with your proposed change.

Maurice
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  • You're welcome :) - The way to show that an answer helped you is to upvote (if you have sufficient reputation points) and accept it (the little checkmark next to the score). That's sufficient - thanks comments besides that aren't necessary (but I appreciate it). – Maurice Jan 05 '23 at 16:55