HiCommand Dynamic Link Manager User's Guide (for Windows(R))

2.2.1 System configuration using an FC-SAN

In a FC-SAN, fiber cables connect hosts and storage subsystems. The cable port on the host is a host bus adapter (HBA). The cable port on the storage subsystem is a port (P) on a channel adapter (CHA).

A logical unit (LU) contained in a storage subsystem 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 assigns an ID to the management-target path. This ID is called a path management PATH_ID. Also, the path might be called a management target.

Figure 2-1 HDLM system configuration using the FC-SAN shows the HDLM system configuration using the FC-SAN.

Figure 2-1 HDLM system configuration using the FC-SAN

Table 2-1 HDLM system components using the FC-SAN lists the HDLM system components using the FC-SAN.

Table 2-1 HDLM system components using the FC-SAN

Components	Description
HBA	A host bus adapter. This serves as a cable port on the host.
FC-SAN	A dedicated network that is used for data transfer between hosts and storage subsystems.
CHA	A channel adapter.
P	A port on a channel adapter. This serves as a cable port on a storage subsystem.
LU	A logical unit with which the host can perform input or output operations. This unit can be accessed from the network.
Dev	A logical area (a partition) in an LU.
Path	A route that connects a host and a Dev in an LU.

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