HP Hitachi Dynamic Link Manager Software - Manual (Page 34)

2. HDLM Functions
12
Table 2-3: Function of HDLM Programs
Program name Functions
HDLM command Provides the
dlnkmgr
command, which enables you to:
• Manage paths
• Display error information
• Set up the HDLM operating environment
HDLM utility Provides the HDLM utility, which enables you to:
• Collect error information
• Add a new LU and delete an existing LU (reconfiguring an HDLM
device dynamically)
• Create an HDLM driver configuration definition file (
/kernel/drv/
dlmfdrv.conf
)
• Create a correspondence table of logical device files when migrating
to HDLM 6.5.1
• Support the creation of a VxVM configuration file
• The unattended installation of HDLM
• Install Hitachi Command Suite Common Agent Component
HDLM manager Provides the HDLM manager, which enables you to:
• Configure the HDLM operating environment
• Request path health checks and automatic failbacks to be performed
• Collect error log data
HDLM alert driver Reports the log information collected by the HDLM driver to the HDLM
manager. The driver name is
dlmadrv
.
HDLM driver Controls all the HDLM functions, manages paths, and detects errors. The
HDLM driver consists of the following:
• Core logic component
Controls the basic functionality of HDLM.
• Filter component
Sends and receives I/O data. The driver name is
dlmfdrv
.
• HDLM nexus driver
Performs operations such as reserving controller numbers for logical
device files of the HDLM device, and managing HDLM driver
instances for each HBA port. The driver name is
dlmndrv
.