You have been asked to create a new datastore for the Production cluster; however, the...

Cannot create a new datastore from vCenter Server or directly from the vSphere Client

Creating a new datastore fails

The Add Storage Wizard reports the error:An error occurred during host configuration.Call “HostDatastoreSystem.QueryVmfsDatastoreCreateOptions” for object “ha-datastoresystem” on ESXi “xxx.xxx.xxx.xx″ failed.An internal error occurred in the vsphere client.

 Cause

This issue may occur if:

The size of the LUN is more than 2TB - 512 bytes. The maximum LUN size in vSphere 4 is 2TB - 512 bytes. For more information on this limitation, see Troubleshooting a LUN that is extended in size past the 2TB/2047GB limit (1004230).

The LUN being presented was used as an RDM earlier and does not have a valid partition table.

The LUN being presented was used as a disk device on an other operating system and does not have a valid partition table.

The LUN contains a GPT partition that cannot be removed.

 Resolution

To prevent this issue:

Ensure that the LUN size is less than 2TB - 512 bytes or 2047GB. If the LUN is larger then 2TB - 512 bytes, delete it from your Storage Array and recreate it with a size less than the 2TB - 512 bytes limit.

If the disk was used by another operating system in the past (I.E.: it was an RDM, or Linux, FreeBSD, or other filesystem) or contains a GPT partition, you must delete the partition information.For more information