
2. HDLM Functions
17
Table 2-4: Functions of HDLM Programs
Note:
HDLM programs other than the HDLM GUI are referred to as the HDLM Core
components.
Program name Functions
HDLM GUI Provides a graphical user interface (GUI), which enables you to:
• Manage paths
• Display error information
• Set up the HDLM operating environment
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
• Clear persistent reservations
• Register persistent reservation keys
• Check the configuration of the paths
• Check the installation information
• Perform unattended installations of HDLM
• Perform unattended uninstallations of HDLM
HDLM manager Provides the HDLM manager, which enables you to:
• Configure the 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.
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
hdlmdsm.sys.
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