Backup your database before you begin and store the backup off your site server, like on your hard drive.

在你开始和储存备份之前，将你的数据库在你的站点服务器上备份，例如在你的硬盘上。

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Items you'll need: computers (PCs or Macs), a main storage server, a back-up server (in case the main server dies) and portable hard-drive stored off-site (if the house catches fire).

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