NetApp Certified Data Administrator (NCDA) – ONTAP v3 — Question 22

You are using AFF storage with the NVMe storage protocol on your Linux clients.
In this scenario, which NVMe feature must be present and enabled for the client to see storage failover happen?

Answer options

• A. Asymmetric Namespace Access (ANA)
• B. Multi-Path I/O (MPIO)
• C. Asymmetric Logical Unit Access (ALUA)
• D. NVMe Qualified Name (NQN)

Correct answer: A

Explanation

Asymmetric Namespace Access (ANA) is essential for enabling the client to recognize storage failover events, as it provides information about the accessibility of namespaces across multiple paths. Multi-Path I/O (MPIO) and Asymmetric Logical Unit Access (ALUA) are related to path management and logical unit access, respectively, but they do not directly facilitate the failover visibility that ANA provides. NVMe Qualified Name (NQN) identifies the NVMe subsystem but is not involved in failover operations.