Which statement about FlexCache data reads is not true?

Which statement about FlexCache data reads is not true?

• A. FlexCache requires full dataset synchronization before serving clients.
• B. If requested data exists in FlexCache, it is served directly from the cache.
• C. FlexCache is sparsely populated and only stores frequently accessed blocks.
• D. FlexCache can exist on a different ONTAP cluster than the origin.

Answer: (A)

FlexCache reads work without requiring the entire dataset to be synchronized up front. When data is already in the local cache, reads are served directly from the cache, delivering fast access to clients. If a requested block isn’t cached yet, the read is sent to the origin, the data is returned, and that block is cached for subsequent requests. This on-demand caching means there’s no need to synchronize the whole dataset before serving clients. The cache is sparsely populated by design, storing only blocks that are frequently—or recently—accessed to optimize space. Additionally, the cache can reside on a different ONTAP cluster than the origin, enabling remote caching. So the idea that you must fully synchronize the dataset before serving reads is not true.

FlexCache reads work without requiring the entire dataset to be synchronized up front. When data is already in the local cache, reads are served directly from the cache, delivering fast access to clients. If a requested block isn’t cached yet, the read is sent to the origin, the data is returned, and that block is cached for subsequent requests. This on-demand caching means there’s no need to synchronize the whole dataset before serving clients. The cache is sparsely populated by design, storing only blocks that are frequently—or recently—accessed to optimize space. Additionally, the cache can reside on a different ONTAP cluster than the origin, enabling remote caching. So the idea that you must fully synchronize the dataset before serving reads is not true.