HSG80 Array Controller V8.7 Command Line Interface Reference Guide
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SET controller
to mirrored mode, going from mirrored mode to nonmirrored mode is permitted
with a failed cache module. The controller automatically restarts when this switch
is specified.
NODE_ID=nnnn-nnnn-nnnn-nnnn xx
Sets the subsystem worldwide name (node ID).
•
nnnn-nnnn-nnnn-nnnn is the node id
•
xx is the checksum
CAUTION: Each subsystem has its own unique worldwide name (node ID). If you
attempt to set the subsystem worldwide name 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 worldwide name; data corruption occurs.
NODE_ID is used to set the worldwide name. Worldwide name, which is actually
a number, is a Fibre Channel convention. Every port has a unique 64-bit number,
consisting of 16 hex digits. Each 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 done automatically by the
controllers. The numerical value of the port IDs depends on what failover mode
the controllers are in.
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 controller's port 1 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 (in the 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).
In multiple-bus failover, all four ports are independent, and each has its own port
ID. The port IDs are assigned as follows:
•
Controller B port 1 = node ID + 1
•
Controller B port 2 = node ID + 2
•
Controller A port 1 = node ID + 3