PowerPath: PowerPath for Windows: How to disable Auto Host Registration in PowerPath.

Summary: How to disable Auto Host Registration in PowerPath.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

PowerPath 5.7.x enables Auto Host Registration by default during installation.

PowerPath 6.0 disables Auto Host Registration by default during installation.

Unisphere host registration IP may get changed inadvertently for a multi-homed host.

Cause

Array Auto Host Registration is a process that sends special I/O commands down each path to register the initiators. The information sent in the registration includes the initiator type, hostname, and IP address. The array uses this information to determine the correct SCSI behavior to present to the host, and to display hosts to connect to the storage. Auto Host Registration simplifies the configuration process.

Resolution

Follow the resolution steps below matching your scenario to disable Auto Host Registration when using PowerPath 5.7.x:

Scenario 1: PowerPath has not yet been installed:


During installation, use the CLI option AUTO_HOST_REGISTRATION=0. For example:

EMCPower.X64.signed.<version>.<build>.exe /v"/L*v C:\PPsetup.log AUTO_HOST_REGISTRATION=0"


Scenario 2: PowerPath is already installed with the default setting. Auto Host Registration is enabled:

  1. Uninstall PowerPath.
  2. Reboot.
  3. De-register and re-register the host in Unisphere with the correct IP address (if required).
  4. Install PowerPath through the CLI option to disable Automatic Host Registration:
EMCPower.X64.signed.<version>.<build>.exe /v"/L*v C:\PPsetup.log AUTO_HOST_REGISTRATION=0"
 
  1. Reboot.

When using PowerPath 6.0, use the powermt set auto_host_registration={on|off} command to set it ON or OFF. A reboot is required for it to take effect.


Use the powermt display options command to check the Auto Host Registration status. 

 

Affected Products

PowerPath for Windows

Products

PowerPath for Windows
Article Properties
Article Number: 000053233
Article Type: Solution
Last Modified: 23 Sep 2025
Version:  5
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