Which NetApp Storage Tier component works controller-wide on a FAS controller?

Which NetApp Storage Tier component works controller-wide on a FAS controller?

• A. Flash Cache
• B. Flash Pool
• C. Flash Disk
• D. Flash IO

Answer: (A)

Flash Cache is a controller-wide read cache that lives on the FAS controller and is shared by all volumes and aggregates. Because it sits at the controller level, frequently accessed data cached in flash can be served to any IO path without regard to which disk pool or LUN initiated the request, reducing latency across the entire system. Flash Pool, by contrast, is a cache tier built from flash devices organized into pools to accelerate specific disks or aggregates, not the whole controller. Flash Disk and Flash IO aren’t standard NetApp terms for a global storage tier component on a FAS controller, so they don’t fit this description.

Flash Cache is a controller-wide read cache that lives on the FAS controller and is shared by all volumes and aggregates. Because it sits at the controller level, frequently accessed data cached in flash can be served to any IO path without regard to which disk pool or LUN initiated the request, reducing latency across the entire system. Flash Pool, by contrast, is a cache tier built from flash devices organized into pools to accelerate specific disks or aggregates, not the whole controller. Flash Disk and Flash IO aren’t standard NetApp terms for a global storage tier component on a FAS controller, so they don’t fit this description.