Azure Data Box 5 Tib limits and support for large file shares

Hi Folks 

I’ve hit a problem in seeding data to azure using a Databox

Copy had been created and DDB is ready to be shipped also. 

I’ve followed this procedure:

https://documentation.commvault.com/v11/expert/97276_migrating_data_to_microsoft_azure_using_azure_data_box.html

this has also helped:

 https://commvaultondemand.atlassian.net/wiki/spaces/ODLL/pages/351142608/Deduplication+Database+Seeding#DeduplicationDatabaseSeeding-DDBSeedingusingDeduplicatedStorage

I’m on step 4 “Once the jobs associated with the initial seeding is complete, shutdown the data box using the recommended shut down process for Azure Data Box.”

Running the validation  i get this error:

https://aka.ms/dberr5 - Large file shares are not enabled on your storage account(s). To disregard this error

The CV_Magnetic is 36TB an so easily hits the 5TB limits stipulated here: https://learn.microsoft.com/en-us/azure/databox/data-box-disk-limits under “Object size limits and Azure Files”

So the only think i can do is drop the storage to LRS and enable large file format. - First Question is this the resolution or should i handle this in another way?

Second question - As the customer wants RA-GRS for redundancy so after converting databox to cloud library seed would i need to do another Cloud to Cloud copy here to get the baseline data out of the LRS storage?  

Any suggestions greatly appreciated