Staging your rollout for Cached Exchange Mode is necessary because users will effectively download a complete copy of their mailbox from the Exchange server to use on their local computer.

• 分阶段部署缓存Exchange模式功能是必要的,因为用户将以很高的速度从Exchange服务器下载其邮箱的完整副本,以便在其本地计算机上使用。