从灾难恢复的角度来看，可移动存储设备(磁带、磁盘、甚至usb)是最可靠的备份，因为可以将所存储的信息保存在现场以外的其他位置。

The removable storage solution (tape, disk, or even USB) is the most reliable backup from a disaster recovery standpoint, in that the storage can be kept offsite in a different location.

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它们通常提供了最基本的单用户环境，您可以使用这个环境进行磁盘检查(fsck)、系统安全漏洞检查，或者从备份恢复受损的文件。

These almost always provide a minimal single-user environment that you can use to run disk checks (FSCK), check for system compromises, or restore damaged files from backup.

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这里有两个选择；可以通过mksysb恢复重新构建VIOS和LPAR，也可以从磁盘引导它们。

I had two choices here; I could either rebuild the VIOS and the LPARs from a mksysb restore or attempt to boot them from disk.

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