Which statement about WAFL is correct?

• A. WAFL is a cloud service for disaster recovery.
• B. WAFL is NetApp's file system used to manage data and support integrity.
• C. WAFL is a network protocol for file sharing.
• D. WAFL is a GUI tool for dashboards.

Answer: (B)

WAFL stands for Write Anywhere File Layout and is NetApp’s file system. It is the software layer that organizes data and metadata on storage, and it uses copy-on-write and transactional updates to maintain data integrity. This design supports features like snapshots and fast recovery, and it underpins NetApp’s ONTAP data management and access via NFS/SMB. It’s not a cloud disaster-recovery service, not a network protocol, and not a GUI tool, which is why describing WAFL as NetApp’s file system used to manage data and support integrity is the correct choice.