DELL EMC Unity: VMFS Datastores support on Unity. Unable to create VMFS 6 datastore (Dell EMC Correctable)
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Symptoms
Unable to create a VMFS 6 datastore directly from the DELL EMC Unity Storage array.
Cause
VMFS Datastores version 6 are supported starting in Unity OE 4.3
Resolution
Fix:
VMFS Datastores version 6 are supported in Unity OE 4.3, however, this is currently only possible over CLI. Creating a VMFS datastore from Unisphere defaults to VMFS 5.
Please refer to the UEMCLI guide or "uemcli -no /stor/prov/vmware/vmfs -help" for guidance.
Workaround:
The user can create a LUN from Storage -> Block -> LUNs, present it to ESXi host and format it as VMFS 6 from ESXi host.
The selection box defaults to VMFS 5 in vSphere also, but it can be changed to VMFS 6 here:
VMFS Datastores version 6 are supported in Unity OE 4.3, however, this is currently only possible over CLI. Creating a VMFS datastore from Unisphere defaults to VMFS 5.
Please refer to the UEMCLI guide or "uemcli -no /stor/prov/vmware/vmfs -help" for guidance.
Workaround:
The user can create a LUN from Storage -> Block -> LUNs, present it to ESXi host and format it as VMFS 6 from ESXi host.
The selection box defaults to VMFS 5 in vSphere also, but it can be changed to VMFS 6 here:
Affected Products
Dell EMC Unity FamilyProducts
Dell Unity 300, Dell EMC Unity 300F, Dell EMC Unity 400, Dell EMC Unity 400F, Dell EMC Unity 500, Dell EMC Unity 500F, Dell EMC Unity 600, Dell EMC Unity 600FArticle Properties
Article Number: 000053034
Article Type: Solution
Last Modified: 12 Dec 2025
Version: 3
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