近年来网络攻击、黑客攻击导致的重要信息泄露、数据丢失等事件频频发生。在此网络安全的严峻形势下，人人都需要提高网络安全意识。为了网站数据安全，备份是必不可少工作。那么，该何如给网站服务器进行备份呢？下面小编给大家分享四种网站服务器数据备份方式。
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一、完全备份
完整备份是最简单的备份形式，包含所有需要备份的文件夹和文件。我们通常会压缩文件以节省空间，但即使压缩完全备份也可能占用大量存储空间。备份磁盘的大量访问也需要额外的带宽。
完全备份的优点是易于恢复。由于可以随时获得完整的数据，因此数据恢复快速简便。理想的做法是始终进行完整备份，因为它们是最全面的，并且是独立的。但是，这样做往往耗费时间。
二、增量备份
由于完全备份非常耗时，因此我们可能更需要增量备份，以减少执行备份所需的时间。增量备份仅备份自上次备份以来已更改的数据。例如，假设在星期一进行了完整备份，则可以在星期二执行增量备份以备份自星期一以来已更改的文件。周三，对备份自周二以来发生变化的文件执行了另一次增量备份。
由于每次迭代备份的数据量要小得多，因此可以节省存储空间并减少网络带宽。它还允许保留相同文件的多个版本。但是，增量备份使用更多计算能力，因为必须将每个源文件与上一个完整备份和每个后续增量备份进行比较，以确定数据是新的还是已更改。而且，恢复过程较慢。
三、差异备份
差异备份介于完全备份和增量备份之间。尽管增量备份了自上次完全备份或增量备份以来修改的所有文件，但差异备份通过备份自上次完全备份以来已更改的所有文件提供了中间立场。
差异备份本质上是自上次完全备份以来所做的所有更改的累积备份。恢复差异备份比恢复增量备份更快，只需要最后一次完整备份和最后一次差异备份即可创建完整的恢复。
要节省存储空间，可以将差异备份设置为覆盖上次差异备份。与增量备份一样，差异备份还需要额外的网络带宽来将当前文件与已备份的文件进行比较，以便查找和备份仅更改的文件。
四、镜像备份
基于镜像的备份允许您创建整个系统(或一个或多个分区)的完整磁盘备份，包括操作系统、应用程序以及与之关联的所有数据，而不仅仅是文件和文件夹。备份将保存为一个称为镜像的文件。当您需要还原整个系统时，镜像备份是最快的恢复选项。它们在灾难恢复方面非常有效。您可以选择将整个服务器恢复到与新服务器完全相同的状态，即使该服务器具有不同的硬件也是如此。
您还可以从基于镜像的备份还原单个文件，而无需还原整个系统。备份镜像可以保存到各种不同的介质中，为您提供额外的备份副本。
总结
服务器常见的备份方法大概就是这些，备份可以防止服务器故障或被攻击时导致数据损坏或丢失。。