Hitachi Dynamic Link Manager Software Users Guide for AIX (6.6) (T5208-96010, April 2011)

2. HDLM Functions
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Table 2-3: Functionality 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
• Change the default value of the hdisk attribute
• Migration of HDLM
• Clear HDLM persistent reservation
• Exclude the hdisk recognized as a boot disk from being an HDLM
management target
• Set ODM to define HDLM operations
• Delete hdisks according to the parameter settings
• Install HDLM
• The unattended installation of HDLM
• Install Hitachi Command Suite Common Agent Component
• Collect information about errors that occur during HDLM installation
• Perform maintenance when HDLM-managed devices are restored
HDLM manager Provides the HDLM manager, which enables you to:
• Configures the HDLM operating environment
• Request path health checks and automatic failbacks to be performed
• Collects 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 HDLM functionality, manages paths, and detects errors. This is
an add-in module of the AIX MPIO driver. The HDLM driver consists of
the following:
• Core logic component
Controls the basic functionality of HDLM.
• Filter component
Sends and receives I/O data.
HDLM configuration log driver Acquires operation logs of the configuration processing for the HDLM
driver.