LUN-level switching is only available when using the DS8000 storage server and can switch the IASP between partitions or between systems.

LUN - level切换技术只有在使用DS8000存储服务器环境下才能采用，它可以在分区间或在系统间切换IASP。

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Switched disk and LUN-level switching use only one copy of the IASP but can switch the connection of that IASP from one system to another.

交换磁盘和LUN - level切换仅使用一份IASP副本，就可以把IASP的连接从一个系统切换到另一个系统。

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Typically, clients use switched disk or LUN-level switching within a data center to provide local protection from planned and unplanned outages not involving the disk subsystem.

客户通常会在数据中心使用交换磁盘或 LUN-level 技术来为计划内和计划外中断提供本地保护，但不涉及到磁盘子系统。

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It's risky for newly hired executives to make multiple changes at once, switching both industry and job level, for example.

WSJ: How to Switch Careers, Companies and Roles

Even if you are switching career paths, people will judge you based on your past success and your own level of confidence in your new endeavor.

FORBES: It's Time to Reinvent YOU

A-level pupils take fewer subjects than those studying for Scottish Highers, they have more scope to boost their grades by switching subject.

ECONOMIST: Exam results