Mysterious 3PAR volume 512 B on vmware

[T. Cooper]

In vmware I see a 512 B volume with an odd identifier and LUN. I cant figure out where it is coming from. Any ideas?

[T. Cooper]

Its related to vvols

"The PE will be seen as an administrative LUN with LUN ID 256 with a size of 512 bytes. That’s it."

http://www.bitcon.be/vmware-vsphere-6-0-vvols-available-on-hp-3par/

I dont remember turning that on.

[CalvinZito]

Here's a demo I did showing vVols with 3PAR.  And yes, I wouldn't expect to see the LUN 256 unless you set up vVols.  That said, the VASA provider is on the 3PAR controller. Anyone else have insight here? 

[yapkl]

See page 10 of this doc https://www.hpe.com/h20195/v2/getpdf.aspx/4AA5-6907ENW.pdf

Check this CLI on ESX -> esxcli storage core device list -–pe-only 

Also run showvasa to see if that's running. If yes, that's probably why you're seeing the PE.

[Sheldon Smith]

And take a look at the HPE 3PAR VMware ESX/ESXi Implementation Guide:

"Beginning with 3PAR OS 3.2.1, an in-band device known as a PE LUN (Protocol Endpoint LUN) is exposed to all hosts connected using VMware Persona 11. ... Depending on the host HBA/CNA driver in use, the PE LUN might appear as a LUN number 256 in the host device list."

Note: While I work for Hewlett Packard Enterprise, all of my comments (whether noted or not), are my own and are not any official representation of the company.
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