Dell Unity: Deattaching a LUN from a host using UEMCLI (Correctable)

Summary: This KB article describes deattaching Logical Unit Numbers (LUNs) from host/hosts using UEMCLI.

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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Instructions

Different ways to deattach a LUN from host/hosts using UEMCLI:
 

  1. Run uemcli -u admin -p admin_pass /stor/prov/luns/lun -id LUN_ID set -lunHosts 'HOST_ID, HOST_ID'
    This defines the LUN access to certain hosts and automatically deattaches it from all other unmentioned hosts.

Or:
 

  1. Run uemcli -u admin -p admin_pass /stor/prov/luns/lun -id LUN_ID set -lunHosts ""
    This deattaches the LUN from all assigned hosts.
     

Get LUN ID command: uemcli /stor/prov/luns/lun show
Get Host ID command: uemcli /remote/host show

Additional Information

This command is found in the Dell Unity Family Unisphere Command Line Interface User Guide.

Check page 390 'Change LUNs' for more details about this command and its different usage and parts.

Affected Products

Dell EMC Unity Family

Products

Dell EMC Unity Family
Article Properties
Article Number: 000019161
Article Type: How To
Last Modified: 01 Jun 2026
Version:  5
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