Unable to add an Intel 530 SSD as an ESXi 6.0 Datastore

Hello. Has anyone else been able to add an Intel (530) SSD as a datastore on ESXi 6.0?

I've tried multiple times unsuccessfully. It starts the process and shows it in the recent tasks as "Create VMFS datastore", but after that it just keeps running and never completes.

I've added 3 other non-SSD (Hitachi and 2 Western Digital) drives without any problem.

I've "cleaned" the SSD by attaching it to a Win7 system and using diskpart to erase any other partitions:

diskpart^

select disk x^

clean^

exit^

and then marked it as active with a GPT format.

I tried reinstalling a clean copy of ESXi and then adding it, but got the same results.

Does anyone have any idea what I might be doing wrong?

Or is the problem related to the (type of) SSD?

Thanks in advance,

A Sood

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PS. The "Create VMFS datastore" task never ends. I eventually just reboot the system to end it.