How to migrate Aure standard storage to premium storage- Azure Files Service

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For better understanding: Are you referring to Azure Storage account GPV2? Do you need to move the azure standard Storage account to Premium (account kind) am I correct? If not please correct me

Migrate from standard to premium
You can't convert an existing standard performance storage account to a block blob storage account with premium performance. To migrate to a premium performance storage account, you must create a premium block blob account, and migrate the data to the new account. For more information, see Create a BlockBlobStorage account.

To copy blobs between storage accounts, you can use the latest version of the AzCopy command-line tool. Other tools such as Azure Data Factory are also available for data movement and transformation.

• Once you've created a file share in a storage account, you cannot move it to tiers exclusive to different storage account kinds. For example, to move a transaction optimized file share to the premium tier, you must create a new file share in a FileStorage storage account and copy the data from your original share to a new file share in the FileStorage account. We recommend using AzCopy to copy data between Azure file shares, but you may also use tools like robocopy on Windows or rsync for macOS and Linux.
• Azure Files supports two storage tiers: premium and standard. Standard file shares are created in general purpose (GPv1 or GPv2) storage accounts and premium file shares are created in FileStorage storage accounts. Learn more about how to create standard file shares and premium file shares.

• The following article summarizes and points to guidance on how to move, upgrade, or migrate a storage account: Migrate a storage account
• Microsoft provides services and utilities for importing your data from on-premises storage devices or third-party cloud storage providers. Which solution you use depends on the quantity of data you're transferring. For more information, see Azure Storage migration overview.

If you are referring to Disk (example shows how to convert a single VM disk from Standard to Premium storage) Switch individual managed disks between Standard and Premium

Convert Azure managed disks storage from Standard to Premium or Premium to Standard
Hope this helps!

Kindly let us know if the above helps or you need further assistance on this issue.

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