To accelerate access to a hot volume at multiple remote sites, which ONTAP feature simplifies file distribution and reduces WAN usage?

• A. SnapMirror Business Continuity
• B. FlexCache technology
• C. MetroCluster software
• D. FlexClone technology

Answer: (B)

FlexCache caches data from a central origin volume at remote sites, so clients at those sites can read most requests from a local cache rather than sending every read across the WAN to the origin. When a request hits the cache and the data isn’t already there, the cache fetches it from the origin, stores it locally, and serves subsequent requests from the local cache. This dramatically speeds access to hot data and cuts WAN traffic because the majority of reads stay close to the users. It also makes file distribution simpler because you maintain one origin and multiple remote caches that automatically populate with popular data as needed, without replicating the entire dataset everywhere. The other options address replication or cloning rather than caching for remote performance, so they don’t provide the same WAN-reducing, local-access benefits.