Explanation
Step 1: Connect to the administrator portal
Find a storage account
The list of storage accounts in the region can be viewed in Azure Stack Hub by following these steps:
1. Sign in to the administrator portal https://adminportal.local.azurestack.external.
2. Select All services > Storage > Storage accounts.

By default, the first 10 accounts are displayed. You can choose to fetch more by clicking the Load more link at the bottom of the list.
Step 2: Open the Storage accounts blade.
Step 3: Select hr12943.
Once you've located the accounts you're interested in viewing, you can select the particular account to view certain details. A new pane opens with the account details. These details include the kind of account, creation time, location, and so on.
Step 4: Select Recover.
Recover a deleted account
You may be in a situation where you need to recover a deleted account.
In Azure Stack Hub, there's a simple way to do that:
Browse to the storage accounts list. For more information, see Find a storage account at the top of this article.
Locate that particular account in the list. You may need to filter.
Check the state of the account. It should say Deleted.
Select the account, which opens the account details pane. (Step 3 above) On top of this pane, locate the Recover button and select it. (Step 4) Select Yes to confirm.
Reference:
https://learn.microsoft.com/en-us/azure-stack/operator/azure-stack-manage-storage-accounts