You need to architect a solution for the user profiles. The solution must provide profile access in the event of a single point of failure. 
Which of the following is the best solution for user profiles?

Answer options:

A.Using Recovery Services Vault to backup the profiles to a different region
B.Using cloud cache for user profiles
C.Using an Azure Files with Geo-zone redundancy GZRS storage account for storage profiles
D.Using an Azure Files with Geo-redundant GRS storage account for storage profiles

Correct Answer: B 
Cloud Cache will provide profile access in the event of a single point of failure. While other options may also store redundant copies of the profile but the copies are not available without intervention.
Option A is incorrect. Using Recovery Services Vault to backup the profiles to a different region is not a recommended solution.
Option B is correct. If you want synchronous replication for minimizing the data loss, then it is recommended to use FSLogix Cloud Cache.
Option C is incorrect. Using Azure Files with Geo-zone redundancy GZRS storage account for storage profiles is not a recommended solution.
Option D is incorrect. This solution may also store redundant copies of the profile but the copies are not available without intervention.
Reference: 
To know more about Azure Virtual Desktop disaster recovery, please visit the below-given link: 

https://docs.microsoft.com/en-us/azure/virtual-desktop/disaster-recovery?WT.mc_id=AZ-MVP-5004159#user-and-app-data