HP Hitachi Dynamic Link Manager Software - Manual (Page 36)

2. HDLM Functions
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2.5 Position of the HDLM Driver and hdisk
The HDLM driver is positioned above the SCSI driver and is an add-in module of
MPIO driver located in the AIX standard hdisk. Each application on the host uses the
hdisk (logical device file) created by HDLM, to access LUs in the storage system.
Figure 2-4: Position of the HDLM Driver and hdisk shows the position of the HDLM
driver and hdisk. The logical device file name can be changed by using the
rendev
command. In this manual, the file name of a default logical device of the OS (hdiskn)
or an hdisk name is used as the logical device file name.
Figure 2-4: Position of the HDLM Driver and hdisk