Globally unique resources that provide access to data management services and serve as the parent namespace for the services.
Hi @ Kensei Kawamura,
Welcome to Microsoft Q&A Platform.
As per Microsoft documentation, when a storage account is deleted, it enters a soft-deleted state for the retention period (default: 14 days). During this time:
- The storage account can be restored.
- The storage account name remains reserved.
- A new storage account cannot be created with the same name.
Ref: Recover a deleted storage account
After the retention period expires:
The storage account is permanently deleted.
- The name is released.
- The name becomes available globally.
- Any Azure customer (across any subscription or tenant) may create a storage account using that name.
Ref: Storage account name requirements
Because storage account names must be globally unique, Azure does not reserve the name for the original subscription once the retention period ends.
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