[导读]SCSI锁是多台主机用来操作LUN的基本机制。在Windows存储环境中，当多台Windows主机需要访问一个LUN的情况下，例如Windows Cluster环境，就会用到SCSI锁。本文就SCSI锁的作用和类型，以及Windows Cluster 2003/2008中使用到的SCSI锁进行介绍。 SCSI锁的作用: 在一个共享存储 ...

在一个共享存储的环境下，多台前端主机可能会同时访问同一台存储设备，如果此时多台主机在同一时点上对一个LUN进行写操作，那么可想而知这个LUN将不知道哪个数据先写，哪个数据后写。为了防止这种情况发生而导致的数据损坏，所以就有了SCSI锁的概念。

在一个共享存储的环境下，多台前端主机可能会同时访问同一台存储设备，如果此时多台主机在同一时点上对一个LUN进行写操作，那么可想而知这个LUN将不知道哪个数据先写，哪个数据后写。为了防止这种情况发生而导致的数据损坏，所以就有了SCSI锁的概念。

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