I am using google console and I earlier had 2.5 TB of data in my DB and hence the auto increase configuration of GCP increased the storage to 2.73 TB. So I am being billed for 2.73 TB storage.
Recently I have reduced the storage size of my database to 1.5 TB. Even now I am being billed for 2.73 TB storage.
I am trying to reduce the storage max provisioned to 1.7 TB. I also wanted to have Automatic increase enabled so that in future if the data grows, the size gets incremented. I am wondering if I can set the value to some thing around 1.7 TB so that I am not billed more.
Currently I am being billed for close to 1.2 TB extra storage which increased in the past. The docs says $0.17/GB. So I will be saving some cost here.
Screeenshot for the current configuration
My concern is that
You cannot decrease allocated storage space on Google Cloud SQL.
One manual method is to export the databases, delete and create a new instance, and then import your data.
Reference documentation: