You must design profile storage for a single-region Azure Virtual Desktop deployment that spans three availability zones. The solution must tolerate a zone failure with zero data loss (RPO=0) and target an RTO under 30 minutes with minimal administrative actions. Which option should you choose?

Azure Files Premium with Zone-Redundant Storage (ZRS) is the correct choice because ZRS replicates data synchronously across three Azure availability zones within a region, ensuring RPO=0 and high availability during a zone failure. This meets the requirement for tolerating a zone failure with zero data loss. Hourly snapshots provide a quick restore option for user error or corruption, contributing to the RTO under 30 minutes. Azure Files Standard with GRS would incur data loss during a zone outage because GRS is asynchronous and replicates to a secondary region, not within the same region's zones, and manual failover would exceed the RTO. Azure NetApp Files single-zone volume does not provide zone-level redundancy, and daily backups would lead to data loss during a zone failure. Storing FSLogix profiles on session hosts' OS disks is not a centralized, highly available solution and would result in data loss and complex recovery during a host or zone failure. Azure Files Premium LRS (Locally Redundant Storage) does not provide zone-level redundancy, making it vulnerable to a zone failure.