2 system configuration – HP Hitachi Dynamic Link Manager Software User Manual
Page 29

2. HDLM Functions
7
2.2 System Configuration
HDLM manages routes between a host and a storage system by using the SCSI driver.
The host and storage systems are connected using SAN with fiber cables. The cable
port on the host is a host bus adapter (HBA). The cable port on the storage system is
a port (P) on a channel adapter (CHA).
A logical unit (LU) contained in a storage system is the target of input to, or output
from, the host. An area in an LU is called a Dev. A route that connects a host and a Dev
in an LU is called a path.
HDLM manages a path by assigning an ID to it. This ID is called the AutoPATH_ID.
A path may also be called a management target. The ID that AIX assigns to a path is
called the OS management path ID. The OS management path ID can be displayed by
executing the AIX
lspath
command. Also, HDLM can display the OS management
path ID that corresponds to the path management
PATH_ID
when you execute the
HDLM command's
view
operation with the
-lu
or
-drv
parameter specified. For
details about the
view
operation, see 6.7 view (Displays Information).
Figure 2-1: HDLM System Configuration shows the HDLM system configuration.
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