Storage I/O Control - "Connected to one or more pre-4.1 hosts..." No, I'm not.

[Catharsis7]

Subject says it all.  When I click the checkbox for Storage I/O Control, I get the message "The datastore <datastore name> is connected to one or more pre-4.1 hosts that do not support Storage I/O Control."  This is false.  There are only two servers connected, and they are both 5.0 with the latest patch.  What gives?

[11satya]

Hi i am have same issue if you remember the solution pleaase share

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Good luck!

[Catharsis7]

I posted the question because I don't have a solution...

And apparently no one wants to tackle this question, which tells me no one knows the solution.

[Svedja · Accepted solution]

Apparently it is a matter of having the correct license on you host.

Only Enterprise Plus support SIOC so if any host without it is connected to the datastore, you will get the error.

After figuring that out, it was a matter of just enabling it on datastores that are exclusevly connected to Ent+ hosts and it worked without any errors.

The one with my installation/ISO-files had to have it disabled as it is shared with hosts with lower licenses.

Of course I pulled my hair on the error and started looking at bad VMs holding stale info for VirtualCenter until I found this blog :

http://yuridejager.wordpress.com/2011/01/10/vmware-vsphere-4-x-error-the-datastore-is-connected-to-o...

Hope this help explaining your problem.

(Yes, I agree that the error displayed sucks has nothing with the reason behind the problem in our case)

[Catharsis7]

Ah, thanks.  Yeah, that'd be nice if they told us that.