Reattaching RDM to VMs using vSphere Client
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After transition of an ESXi host using the 7-Mode Transition Tool (7MTT), you must reattach your RDMs to virtual machines (VMs).
Your stale Raw Device Mappings (RDMs) must have been removed.
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Open the ESXi host or vCenter server managing the ESXi host.
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Right-click the VM, and then select Edit Settings.
The VM Properties window opens.
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Click Add.
The Add Hardware window opens.
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Click Hard Disk.
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Click Next to select the disk.
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Select Raw Device Mappings.
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Click Next to select the target LUN.
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Select the LUN with the new clustered Data ONTAP NAA ID that you noted from the 7MTT mapping file.
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Click Next.
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Choose Select Datastore.
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Select the datastore that matches the disk path that you noted in the 7MTT mapping file.
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Click Next.
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Choose either Physical or Virtual for the Compatibility Mode.
Choose the compatibility mode noted when your stale RDM was removed.
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Click Next.
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Choose Advance Options.
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Select the Virtual Device Node.
Select the virtual device mode that you noted when you removed the stale RDM.
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Click Next.
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Click Finish to submit your changes.
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Repeat the steps for all VMs with RDM attached.
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