HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software Command Line Interface Reference Guide (EK-G80CL-RA. C01, March 2005)

CLI Command Descriptions
191HP StorageWorks HSG60 and HSG80 Array Controller and Array Controller Software
Command Line Interface Reference Guide
If a unit is found that is not device-mounted by Tru64 UNIX, but another OS,
then on each of those units invoke the SET unit FAKE_PR command
against each unit. Other operating systems may not re-register their persistent
reservation settings with the controller based upon a single units persistent
reservation conflict.
NODE_ID=nnnn-nnnn-nnnn-nnnn xx
Sets the subsystem World Wide Name name (node ID).
■ nnnn-nnnn-nnnn-nnnn is the node ID
■ xx is the checksum
Caution: Each subsystem has its own unique WWN (node ID). If you attempt
to set the subsystem WWN to a name other than the one that came with the
subsystem, the data on the subsystem is not accessible. Never set two
subsystems to the same WWN; data corruption occurs.
The subsystem WWN, which is a number, is a Fibre Channel convention.
Every port has a unique 64-bit number, consisting of 16 hexidecimal (HEX)
digits. Each HP StorageWorks Fibre Channel enclosure is assigned a node ID,
which the controller pair in the enclosure assumes. The port IDs derive from
the node ID. The node ID assigned to a enclosure never changes.
The node ID ends in a zero. An example of a node ID is
5000-1FE1-FF0C-EE00. The derivation of port IDs from the node ID is
completed automatically by the controllers. The numerical value of the port
IDs depends on the controller Failover mode.
In Transparent Failover mode, the port ID of port 1 for both controllers is the
node ID plus 1, so in the above example, the port ID for port 1 would be
5000-1FE1-FF0C-EE01. Both controllers share this port ID for port 1 because
in the Transparent Failover mode, only one port (port 1) on the controller is
active at any time, and the other port 1 is on standby. Similarly, both
controllers share a port ID for port 2, which is the node ID plus 2 (for
example, 5000-1FE1-FF0C-EE02).
For a single configuration controller, the port ID is derived the same way
(plus 1 for port 1, plus 2 for port 2).