如果你想复制和备份前景的。

If you want to copy out and backup the Outlook.

youdao

使用数据库和Web服务器上的本地数据源将增加复制和备份的难度，并且加重了Web服务器的负荷。

Using databases and other data sources that are local to the Web server makes replication and back-ups difficult and also increases the load on the Web server.

youdao

GSD包含一些引人注目的特性：数据跨多个数据中心复制和备份，保证读写一致性，最多容纳5tb的对象。

GSD has a few attractive features: data is replicated across multiple data centers and it is backed up, it has read-your-writes consistency, and can accept objects up to 5tb.

youdao