Even though it is simple and it supports any physical device storage type, data migration/replication across systems and host instances synchronization across organization is not possible.
尽管它很简单而且支持任何物理设备存储类型，但是不可能实现跨系统数据迁移/复制和跨组织宿主实例同步。
Another key feature of cloud storage is geographic distribution of data (geographic scalability), allowing the data to be nearest the users over a set of cloud storage data centers (via migration).
云存储的另一个关键特性是数据的地理分布(地理可扩展性)，支持经由一组云存储数据中心(通过迁移)使数据最接近于用户。
Most often, the goal of this migration is to offload less frequently-used data to less expensive external devices for long term storage.
在很多时候，此类移植的目标都是将不太常用的数据转储到更便宜的外部设备上进行长期存储。
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