StorCase Technology CSI-to-SCSI Single & Dual RAID - Manual (Page 101)

88 Configuration
StorCase Technology, Inc. Dual RAID Module User's Guide - Rev. A03
Understanding LUNs and Viewing LUN Information
The controller supports up to 64 SCSI LUNs numbered 0-63. There are three (3) different types
of LUNs: controller, SEP, and partition. The user can view information about each LUN (refer
to section "Viewing LUN Information" for further information).
Controller LUN - The user only needs to assign a controller LUN if using the Configuration
Application Program Interface (CAPI) to configure the controller over a
host channel via SCSI protocol extensions. If not using CAPI, the user can
set the controller LUN to NONE. If using CAPI, the user can set it to a value
of 0-63.
NOTE: Most UNIX, LINUX, and Macintosh operating systems require the controller LUN to
be a higher value than all array LUNs. Before creating the first array, change the
controller LUN to a higher value or choose NONE (best option) if not using CAPI to
manage the arrays. This allows the first array to be seen at LUN 0.
SEP LUNs - Allow access to SEPs. An SEP LUN may be set to a value of 0-63 or NONE.
NONE means that the SEP cannot be accessed via a LUN (refer to section
"Changing the SEP LUN" for further information).
Partition LUNs - Allow access to partitions on the controller. Partition LUNs may be set to
any numeric value from 0-63 (refer to section "Changing a Partition LUN"
for further information).