当系统出现故障时，备份就太迟了. br/> 您需要对此进行计划，并确定可以预期损失多少数据.
阅读此 [ ^ ]关于Microsoft SQL Server的灾难恢复选项.

When you have a system failure it is to late for a backup.
You need to plan this and decide on how much loss off data is expectable.
Have a read through this[^] about the disaster recovery options for Microsoft SQL Server.

当系统发生故障时，它不会等待以便完成备份.您需要为业务开发SLA(服务水平协议).

一旦制定了SLA，您将知道何时设置备份！在我工作的地方，我们每4小时进行一次增量备份，每天进行完整备份.

但是请确保您也定期测试备份！

When the system fails it fails it doesn''t wait for a backup to finish. You need to develop your SLA (service level agreements) for the business.

Once the SLA is worked out you''ll know when to set backups for! Where I work we do incremental backups every 4 hours and full backups everyday.

BUT make sure you test your backups regulary also!