When you create a LUN, you must specify the path name of the LUN, the name of the LUN, the LUN Multiprotocol Type (also called ostype), the LUN size, the LUN description, the LUN identification number, and the space reservation setting.
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Path name of the LUN
The path name of a LUN must be at the root level of the qtree or volume in which the LUN is located.
Name of the LUN
The name of the LUN is case-sensitive and can contain 1 to 255 characters. You cannot use spaces. LUN names must use only specific letters and characters.
ostype (LUN multiprotocol type) guidelines
The ostype (sometimes called LUN multiprotocol type) specifies the OS of the host accessing the LUN. It also determines the layout of data on the LUN, the geometry used to access that data, and the minimum and maximum size of the LUN.
LUN size
You specify the size of a LUN in bytes or by using specific multiplier suffixes.
LUN description
The LUN description is an optional attribute you can use to specify additional information about the LUN.
Space reservation setting
When you create a LUN by using the lun setup command, you specify whether you want to enable space reservations. When you create a LUN using the lun create command, space reservation is automatically turned on.