Hp Hitachi Dynamic Link Manager Software Instrukcja Użytkownika Pobierz pdf (Strona 30)

Program name Functions

• 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.

Note:

HDLM programs other than the HDLM GUI are referred to as the HDLM

Core components.

Driver Levels of the HDLM and MPIO Drivers

The HDLM and MPIO drivers are positioned at a higher driver level than the

SCSI drivers. In other words, applications that are accessing LUs in storage

systems will first use the HDLM and MPIO drivers, and then use the SCSI

drivers, in order to access the LUs.

Figure 2-6 Driver Levels of the HDLM and MPIO Drivers on page 2-11 shows

the driver levels of the HDLM and MPIO drivers.

2-10

HDLM Functions

Hitachi Dynamic Link Manager User Guide (for Windows(R))

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Hp Hitachi Dynamic Link Manager Software Instrukcja Użytkownika Strona 30