Configuring the Controller

Controller LUN—You only need to assign a controller LUN if you are using the Configuration Application Program Interface (CAPI) to configure the controller over a host channel via SCSI protocol extensions. If you are not using CAPI, you can set the controller LUN to NONE. If you are using CAPI, you can set it to a value of 0-7 or SOFT. If set to SOFT, the controller LUN is automatically assigned a LUN value when the controller boots. The soft LUN value will be assigned to the first available LUN (starting from zero) that does not already have a hard (that is, a numeric) LUN assignment.

Note: Most Unix, Linux, and Macintosh operating systems require the controller LUN to be a higher value than all array LUNs. Before creating your first array, change the controller LUN to a higher value or choose NONE (best choice) if you are not using CAPI to manage the arrays. This allows your first array to be seen at LUN 0.

SEP LUNs—Allow access to SEPs. A SEP LUN may be set to a value of 0-7, SOFT (see the controller LUN description for the meaning of SOFT), or NONE. NONE means that the SEP cannot be accessed via a LUN. Note that if both a controller LUN and a SEP LUN are set to SOFT, the controller LUN will be assigned a value first. For information about changing the SEP LUN, see Changing the SEP LUN on page 8-12.

Array LUNs—Allow access to arrays on the controller. Array LUNs may be set any numeric value from 0-7. They may not be set to a SOFT value. Note that an array LUN value may be set to overlap a SOFT controller LUN value. In this case, the controller will keep the numeric value of the overlapped LUN (and the array will not be visible) until you reboot, after which the array will take the LUN, and the controller LUN will change to first available SOFT LUN value. For information about changing the array LUN, see Changing the Array LUN on page 4-21.

Note: Because a maximum of eight LUNs are supported, if eight arrays are required, the controller and SEP LUNs will not be accessible, and must be set to SOFT or NONE.

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Chaparral G5312/G7313, K5312/K7313 manual Configuring the Controller

K5312/K7313, G5312/G7313 specifications

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