disk usage not release

[yzdfci]

I removed instance and double checked that there was no disks in "Compute Engine -- STORAGE --Disks", however, current usage is still there under quotas and so I cannot create instance again. How long will it take to disk usage release?

[Willbin]

Hello @yzdfci,

Welcome to Google Cloud Community!

As stated in this document:

Resource usage quotas are the maximum number of resources you can create of that resource type, if those resources are available. Quotas do not guarantee that resources are always available. If a resource is not available, or if the region you choose is out of the resource, you can't create new resources of that type, even if you have remaining quota in your region or project. For example, you might still have quota to create external IP addresses in us-central1, but there might not be available IP addresses in that region.

Similarly, even if you have a regional quota, a resource might not be available in a specific zone. For example, you might have quota to create VM instances in region us-central1, but you might not be able to create VM instances in the zone us-central1-a if the zone is depleted. In such cases, try creating the same resource in another zone, such as us-central1-f. 

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When trying to create an instance, what is the error message returned? You may use this document to troubleshoot resource availability.