Which of the following features can be used to reduce storage usage for a volume that has been assigned to a host and been completely formatted (e.g. not quick formatted)? (Select TWO).

Copy-on-Write (COW) Snapshots are used for point-in-time recovery and can actually increase storage consumption over time as changes are made, rather than reduce it.

Thin Provisioning allows a volume to be presented larger than its physically allocated storage, with physical space consumed only as data is written. It is a prerequisite for Zero Space Reclamation to effectively reduce physical storage usage by allowing the array to dynamically reclaim deallocated blocks.

Tiered Storage optimizes performance and cost by moving data between different storage types based on access patterns, but it does not reduce the total amount of logical or physical storage required for the volume.

Zero Space Reclamation (e.g., SCSI UNMAP command) enables the host to notify the storage array that specific blocks within a volume are no longer in use, even if they were previously allocated. For thinly provisioned volumes, this allows the array to physically deallocate and reclaim those blocks, reducing actual storage consumption after data deletion or if a full format was followed by block deallocation.

Deduplication is a valid feature for reducing storage usage by eliminating redundant data blocks, but the question asks for TWO features, and Thin Provisioning combined with Zero Space Reclamation are often considered foundational and interactive for dynamic space reduction on a formatted volume.