Because workloads with high Symmetrix cache read-hit rates are serviced at memory access speed, storing the data needed on EFDs may not result in a significant increase in performance.
因为具有高symmetrix缓存读中率的工作负载都是以内存访问速度实现的，所以在EFD中存储所需要的数据可能不会对性能有大的改进。
This information is cached locally for high-performance access, and a built-in mechanism synchronizes the cache with changes to the registry so that updates are not missed.
此信息缓存在本地以实现高性能的访问，内置的机制将缓存与注册中心的更改同步，因此更新不会被错过。
In order to improve system performance, MSDA introduces access decision cache.
为了提高系统性能，MSDA在客体管理器中引入了访问判定缓存。
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