How to Manually Remove Unisphere for PowerMax

Summary: There are rare occasions where the installation stops and is unable to recover, uninstall, or reinstall with provided installer scripts in the downloaded software package.

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Instructions

Note: This is only for Unisphere. It is not required to remove Solutions Enabler.

If there are performance database backup files, move them into a temp folder. Backups are located in: 
<install dir>\EMC\SMAS\backup\SPA - or - <install dir>/EMC/SMAS/backup/SPA

The file ends in a .dat


Perform the following steps to clean the LINUX host of Unisphere:

  1. Delete SMAS and its backup files from /etc/init.d/ directory (there is NO init.d directory starting with Unisphere 10.x)
  2. Take the backup of /var/.com.zerog.registry.xml File in same /var/ directory or some other place, and then delete the original file .com.zerog.registry.xml
Note: .com.zerog.registry.xml is a hidden file!
 
  1. Ensure that there is no Java process running which is pointing to /SMAS directory (this could be jre or jboss). If any Java process is running, you must kill it. Host reboot host kills all the running orphan processes if you cannot kill them manually.
  2. Delete the files  install.dir.*in /tmp directory
  3. Delete SMAS directory (this varies where the top-level install drive/folder is).


Perform the following steps to clean the WINDOWS host of Unisphere:

  1. Save any SPA backup DAT files at SMAS\backup\SPA
  2. Stop SMAS Service
  3. Stop SMAS database service
  4. Open Windows CI and delete the services using the command:
sc delete EMCSMAS
sc delete EMC_smasdb

 

Note: To ensure the service names above are correct, right-click the service and select properties to see the name.
 
  1. Go to the SMAS folder and delete each subfolder one at a time.
  2. Delete the SMAS folder (this varies where the top-level install drive/folder is).
  3. Open CLI and type regedit to get into Windows Registry:

Go to: HKEY_LOCAL_MACHINE > Software > Microsoft > Windows > Current Version > Uninstall > Dell Unisphere for PowerMax (Right click and Delete this key)

  1. In the Control Panel, go to Add/Remove programs and refresh. Unisphere should be gone.
  2. Open CLI and type regedit to get into Windows Registry:

Go to: HKEY_LOCAL_MACHINE > Software > Dell > (delete the following three keys):

Dell Symmetrix Management Application Server
Dell Symmetrix Management Console
Dell Symmetrix Performance Analyzer

  1. Open Windows Explorer and go to C:\Program Files, click View > Options > View > Enable Show hidden files and folders > Apply/Save.
  2. A folder called Zero G Registry appears, open it.
  3. Make a copy of the existing .com.zerog.registry.xml file and rename the copy to .com.zerog.registry.xml.orig
  4. Delete the original .com.zerog.registry.xml

The installation should be removed from the host.

Proceed with a fresh installation of Unisphere for PowerMax per the installation guide.

If there is a performance database to restore (one for each SID), place the backup files back into the location above and follow the Restore performance database instructions within the online help in Unisphere UI.

Additional Information

Starting, stopping, and restarting the services are done through systemd scripts. Use the systemctl commands to:

  • Check the service status:
systemctl status u4p.service
  • Stop the service:
systemctl stop u4p.service
  • Start the service:
systemctl start u4p.service

Affected Products

Unisphere for PowerMax
Article Properties
Article Number: 000205039
Article Type: How To
Last Modified: 16 Jul 2025
Version:  4
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