HP XP7 Storage - Manual (Page 24)

LU Configuration
The following figure shows the LU configuration recognized by the host, after
the installation of HDLM.
Figure 2-4 LU Configuration Recognized by the Host After the Installation
of HDLM
The following table lists and describes the components recognized by the
host.
Table 2-3 Components Recognized by the Host
Components Description
HLU An LU that the host recognizes via the HDLM driver. This
type of LU is called a host LU. Regardless of how many
paths are connected to it, only one host LU is recognized
for each LU in the storage system.
HDev A Dev in an LU that the host recognizes via the HDLM
driver. This type of Dev is called a host device.
Program Configuration
HDLM is actually a combination of several programs. Because each program
corresponds to a specific HDLM operation, it is important to understand the
name and purpose of each program, along with how they are all interrelated.
The following figure shows the configuration of the HDLM programs.
2-6
HDLM Functions
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