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Managing the Disk Array Using Array Manager 60
Selecting a Disk Array and Its Components
When using Array Manager 60, you must select the disk array you will be managing. In
addition, many commands also require you to identify the controller, disk, or LUN within
the disk array that will be impacted by the command.
The command parameters used to select a disk array and its internal components are listed
and described in
Table 36 .
Note
Does it make any difference which controller I select?
There are two paths to the disk array — one for each controller. Typically you
can select either controller to perform an operation and the outcome will be the
same. An exception is when you are binding a LUN. The controller you select
will be assigned ownership of the LUN. To maintain I/O performance, you
should divide the ownership of the LUNs on the disk array between the two
controllers.
Table 36
Command Parameters for Identifying Disk Array Components
Command
parameter
Description
ArrayID Identifies the disk array. The ArrayID may be either the disk array ID
(its S/N), or an alias name assigned to the array. Each disk array
must have a unique ArrayID. The disk array S/N and alias can be
determined using the amdsp -i command.
cntrlrID Identifies the controller within the disk array controller subsystem.
Values can be either A or B, depending on which slot the controller is
installed in.
channel:ID Identifies a disk within the disk array. The channel value indicates the
SCSI channel that the disk enclosure containing the disk is
connected to. The ID value indicates the SCSI ID assigned to the slot
in which the disk is installed.
Valid channel values are 1 - 6, and valid SCSI ID values are 0 - 4, 8 -
12.
LUN Identifies a specific LUN on the disk array. Valid LUN values are 0 -
31.