Lu Configuration - Hitachi XP P9500 User Manual

LU Configuration

On a system using HDLM, the logical device file for the HDLM management-
target device is used to access the target LU.
An LU recognized by a host after HDLM installation, is called a host LU (HLU).
The areas in a host LU that correspond to the Dev in a storage system LU are
called host devices (HDev).
An LU in the storage system corresponds one-to-one with a host LU, a host
device, or an hdisk.
Figure 2-2 LU configuration of the host where HDLM is installed and
correspondence with an hdisk on page 2-5
recognized by a host, after the installation of HDLM.
Figure 2-2 LU configuration of the host where HDLM is installed and
Table 2-2 Components recognized by the host on page 2-5
components recognized by the host.
HLU
HDev
correspondence with an hdisk
Table 2-2 Components recognized by the host
Components
An LU that the host recognizes via the HDLM driver. It is
called a host LU. No matter how many paths exist, one
host LU is recognized for one LU in the storage system.
A Dev in an LU that the host recognizes via the HDLM
driver. It is called a host device. No matter how many
paths exist, one host device is recognized for one Dev in
the storage system.
HDLM Functions
Hitachi Dynamic Link Manager User Guide (for AIX(R))
shows the LU configuration
lists the
Description
2-5