HSG80 ACS Solution Software Version 8.7 for Compaq OpenVMS Installation and Configuration Guide

Planning a Subsystem
1–9HSG80 ACS Solution Software Version 8.7 for Compaq OpenVMS Installation and
Configuration Guide
1–9
What is the Command Console LUN?
StorageWorks Command Console (SWCC) software communicates with the HSG80
controllers through an existing storage unit, or logical unit number (LUN). The
dedicated LUN that SWCC uses is called the Command Console LUN (CCL). The
CCL serves as the communication device for the HS-Series Agent and identifies itself
to the host by a unique identification string. By default, a CCL device is enabled
within the HSG80 controller on host port 1. The HSG80 useswith your platform.
IMPORTANT: OpenVMS requires the controllers be set to SCSI-3 mode.
.
The CCL does the following:
• Allows the RAID Array to be recognized by the host as soon as it is attached to
the SCSI bus and configured into the operating system.
• Serves as a communications device for the HS-Series Agent. The CCL identifies
itself to the host by a unique identification string. This string, HSG80CCL, is
returned in response to the inquiry command.
In dual-redundant controller configurations, the commands described in the following
sections alter the setting of the CCL on both controllers. The CCL is enabled only on
host port 1. At least one storage device of any type must be configured on host port 2
before installing the Agent on a host connected to host port 2.
Select a storageset that you plan to configure and that is not likely to change. This
storageset can be used by the Agent to communicate with the RAID Array. Deleting
this storageset (LUN) later breaks the connection between the Agent and the RAID
Array.
Determining the Address of the CCL
CCL is enabled by default. Its address can be determined by entering the following
CLI command:
HSG80 > SHOW THIS_CONTROLLER
Determining Connections
The term “connection” applies to every path between a Fibre Channel adapter in a host
computer and an active host port on a controller.
NOTE: In ACS Version 8.7, the maximum number of supported connections is 96.