Use the Change Default Host Operating System setting to change the default host type at the storage array level. Generally, you will change the default host type before you connect hosts to the storage array or when you connect additional hosts.
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Keep these guidelines in mind:
For example, if you are connecting eight different hosts to the storage array, and six of those hosts are running a Windows operating system, you must select Windows as the default host operating system type.
For example, if you are connecting five different hosts to the storage array, and two of those hosts are running a Windows operating system, and another three are running a Linux operating system, you must select Factory Default as the default host operating system type.