Cloud SQL storage pricing

[Sergey Shablenko]

Why do I get increasing storage usage even though my db instance is shut down most of the time, I use it only for a few hours a week, and it has data that takes less than 20mb in size.

There was initial usage of ~1GB, but why did it increased to 3GBs?

[goya]

Keep in mind that stopping an instance will not stop all costs generated by it: it stops the costs associated with the instance itself, but the storage used and any IPs continue to be charged [1]. 

Regarding the storage usage increase:

· If you have storage auto increase enabled, the disk could have increased during a time in which the available amount of storage was not enough

· Binary logs can also impact the amount of storage used [2], so if this option is not necessary for your use case you can disable it

· Also keep in mind that you get charged by storage capacity and not by storage used. 

If this is a billing related question I suggest you to try the billing troubleshooter [3] or contact the Billing team [4]

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[1]: https://cloud.google.com/sql/docs/mysql/start-stop-restart-instance#stop 

[2]: https://cloud.google.com/sql/docs/mysql/backup-recovery/pitr#disk-usage 

[3]: https://support.google.com/cloud/troubleshooter/7279311

[4]: https://cloud.google.com/support/billing/