CapiZikus
Contributor
Contributor

RDM on vSPhere

could someone guide me how to create a RDM LUN in a correct way please.

I have create a new volume on my SAN and present the LUN to the esx which the server detected and can see the LUN, however when tried to create a new vm with RDM, the option is grey out, do I have to make that LUN to become RDM first? how?

Thanks

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AntonVZhbankov
Immortal
Immortal

Could you please provide some screenshots?


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Joshua_Mally
Enthusiast
Enthusiast

First of all dont present the LUN on ESX server, if its already added to the ESX server then remove it and unformat SAN LUNs. If the SAN LUN is added on ESX server and formated as datastore it cannot be mapped on the VM as RDM

Now on the VM go to edit settings and select new Hard disk and add the SAN LUN as RDM.

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-Josh

Trying to learn

If you found this information useful, please consider awarding points for "Correct" or "Helpful". Thanks!!! -Josh Trying to learn :slightly_smiling_face:
Joshua_Mally
Enthusiast
Enthusiast

For more info read page 19 in Setup for Failover Clustering and Microsoft Cluster Service guide on

If you found this information useful, please consider awarding points for "Correct" or "Helpful". Thanks!!!

-Josh

Trying to learn

If you found this information useful, please consider awarding points for "Correct" or "Helpful". Thanks!!! -Josh Trying to learn :slightly_smiling_face:

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marcelo_soares
Champion
Champion

If you can't see the LUN as RDM... 1: the LUN was added as a datastore, or 2: the LUN is being used by another SO that are reserving it (maybe a VM or a physical machine).

Marcelo Soares

VMWare Certified Professional 310

Technical Support Engineer

Linux Server Senior Administrator

Marcelo Soares