The application servers will automatically fail over to backup servers should the primary fail.

如果主应用服务器出现故障，故障将自动转移到备份服务器。

youdao

If it's a primary and backup scenario, the failover mediator can map it to the backup server in case the primary server goes down.

如果是主服务器加后备服务器的情况，当主服务器关闭时，故障转移中介可以将它映射到后备服务器。

youdao

The following commands will backup your databases on the primary machine (also shown in Listing 4).

下面的命令将备份主要计算机上的数据库（如清单 4 中所示。）

youdao

There are even rumblings from many IT executives that the cloud backup is quicker than the primary backup.

FORBES: Why a Hybrid Approach to Cloud Computing Works Best for Now

There are cases in which cloud could function as the primary backup site, with on-premises backup as the failover environment.

FORBES: Why a Hybrid Approach to Cloud Computing Works Best for Now

That included making sure the Hackensack branch could serve as a backup home base in the event that both the primary and backup power at the main office went down.

FORBES: NJ Bank CEO: We're Running On The Backups To Our Backups