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v Construct the 15-character unique identifier from the 12-character SSA UID
that is shown on the label that is on the side of the disk drive. You can
recognize the UID by its three-character suffix “00D”.
v Run the ssacand command, and specify the adapter to which the logical
disk is connected. For example:
ssacand -a ssa0 -L
If the logical disk is an array, you can determine the unique identifier in two
ways:
v If the logical disk is already defined, you can use the lsdev command to
determine the unique identity, as follows:
1. Type lsdev -Ccdisk -r connwhere and press Enter.
2. Select the 15-character unique identifier (UID) that was given by the
RAID configuration program when the array was created.
v Run the ssacand command, and specify the adapter to which the logical
disk is connected. For example:
ssacand -a ssa0 -L
Device Attributes
SSA logical disks and SSA physical disks and the ssar router have several attributes.
You can use the lsattr command to display these attributes.
Attributes of the SSA Router, ssar
node_number
This attribute must be set on systems that are using the SSA Fencing facility
or the SSA Disk Concurrent Mode of Operation Interface facility. These
facilities of the SSA disk device driver are used only in configurations where
the SSA disk drives are connected to more than one using system. Therefore,
in configurations where the SSA disk drives are connected to only one using
system, the node_number attribute has no effect.
For configurations that use SSA Fencing or the SSA Disk Concurrent Mode of
Operation Interface, set the node_number to a different value on each using
system that is in the configuration.
270 User’s Guide and Maintenance Information