Resize RDS database (MariaDB)

Question

I mistakenly overbuilt my RDS database. I want to change the storage type to General Purpose instad of Provisioned iOPS. I also want to reduce the allocated storage to 100GiB, and terminate the standby instance.

I'm able to input these changes in the console but when I save it and look at the details again, the changes have not taken effect. Do I need to wait for this to happen?

Sivaraman Selvam · Answer

Hello,

When applying changes to RDS instance, you must be aware that there is a parameter called scheduled modifications, you can decide when you want the modifications to occur:
1. Apply Immediately
2. Apply during the next scheduled maintenance window

You can choose Apply Immediately if you want the changes to apply right away or If you don't choose to apply changes immediately, RDS puts the changes into the pending modifications queue. During the next maintenance window, RDS applies any pending changes in the queue.

Ensure that you Apply immediately for the changes to happen right away, remember that there might be a downtime.

https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.DBInstance.Modifying.html

Resize RDS database (MariaDB)

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