What type of traffic primarily flows between an origin volume and its FlexCache volume?

• A. Data replication streams using SnapMirror TCP ports
• B. Read data and metadata requests through intercluster LIFs
• C. Block-level replication via FC protocols
• D. Client I/O routed through management LIFs

Answer: (B)

The traffic between an origin volume and its FlexCache volume is driven by read data and metadata requests that traverse the intercluster LIFs. In FlexCache, the origin holds the primary data, while the FlexCache volume serves as a cache that clients read from. When data isn’t already in the cache or when metadata about cached objects is needed, requests flow from the FlexCache side to the origin to retrieve the necessary data and metadata. That intercluster communication uses intercluster LIFs to move the data and metadata between the clusters.

This is why it’s not about data replication streams (which use SnapMirror ports), nor block-level FC replication, nor client I/O routed through management LIFs. Those paths serve different purposes: replication traffic for DR, FC-based replication, and management-plane traffic, respectively.