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Microsoft SQL Server 2008 High Availability by Hemantgiri S. Goswami

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Components of clustering

There are some components that we need to carefully consider before we go about designing cluster architecture and installing. Here are the components:

Shared disk array

As the name implies, the disks are shared. The reason behind using shared disk arrays is the fact that they are accessible from remote locations or clients and this is exactly what is required by cluster services.

The cluster architecture forces us to use shared disk resources, as the disk to be used with the cluster environment should be accessible by any of the nodes. The shared disk plays a vital role in the cluster, because it stores not only data files, but logs, FILESTREAM files, and full-text index files. In case of failover, the preferred node will ...

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