检查饭店电脑系统数据备份，确保数据的安全和有效保存。
Examine the copy file of the hotel data bank to make sure that data are safely and effectively kept.
网络系统数据备份是保证信息系统数据安全的重要组成部分。
Network system data backup is an important part of information system data security.
本文介绍了在UNIX系统中安装副盘并进行系统数据备份的方法。
This article introduces the hard disk set up as an attachment in the UNIX system and the method carries on the system data backup.
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