文件存储

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文档中心文件存储操作指南跨可用区、跨网络访问指引

跨可用区、跨网络访问指引

最近更新时间：2024-01-09 16:31:51

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私有网络下跨可用区访问
跨私有网络及跨地域访问

私有网络下跨可用区访问
当您有多台云服务器（Cloud Virtual Machine，CVM）分布在同地域的不同可用区下，但是又需要共享文件存储（Cloud File Storage，CFS）时。您可以把这些 CVM 和 CFS 设置在同一个 VPC 下，即可实现跨可用区资源的互访。
以广州为例，若已经有广州一区的云服务器，此时需要用到 CFS 文件存储，但广州一区由于资源已售罄无法直接创建文件系统。
您可以登录 私有网络子网 为该 VPC  创建可用区为 "广州三区" 的子网。
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创建子网完成后，回到 CFS 控制台，创建广州三区的资源时选择该 VPC 及刚创建的子网。 此时原来在该 VPC 广州一区子网下的云服务器即可直接挂载 CFS，查看 文件系统挂载帮助。
跨私有网络及跨地域访问
CFS 支持以下几种场景，可进行资源访问。
当您有多台 CVM 分布在不同 VPC 下，但是又需要共享文件存储。 
或者您的 CVM 与 CFS 在不同 VPC 下时。
或者您的 CVM 与 CFS 分布在不同地域时（为了达到最好的访问性能，建议 CVM 要与 CFS 在同一个地域）。
您可以将分布在 VPC-A、VPC-B 的 CVM 与分布在 VPC-C 的 CFS，通过建立云联网的方式实现跨 VPC-A、VPC-B、VPC-C之间的互访，查看 云联网快速入门。
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