The NetApp X1971A-R5 is a 512GB solid-state drive (SSD) presented as a PCI Express 2.0 x8 Flash Cache Accelerator Add-in Card. It is designed to enhance the performance of specific NetApp Fabric-Attached Storage (FAS) systems, including the FAS6280, FAS6240, and FAS3270. This card functions as a read cache, storing frequently accessed data closer to the controllers to reduce latency and improve Input/Output Operations Per Second (IOPS) for read-intensive workloads. By accelerating read operations, it helps to improve the overall responsiveness and performance of the NetApp storage system without the need to add more spinning disk drives. The PCI Express 2.0 x8 interface provides sufficient bandwidth for this caching function.