Issue about VMs store on Volume 3par

[Windz]

Hi all,
I'm newbie about 3par.
I had 4 Hyper-v Host and i config raid 1 thin and export one volume on 4 hyper-v host for store VMs on that. I stuck on issue when i store VMs on this Volume. This volume often error and after that all VMs store on this failure. I had turn on MPIO feature and health check on 3par and everything ok.
But i know why i still error on volume
I appreciate about all answers.
Sorry about my bad english.
Thanks all.
This capture about my issue:

[Schmoog]

Try turning off odx. It's a non-feature, and causes tons of issues

[Jeroenix]

If ODX doesn't solve your problem, check the VMQ feature if you're on HP hardware with Emulex drivers and are using iSCSI. Disabling this turned my Hyper-V rig stable again. VMQ mostly hurt my vSwitches though.

Turn off all VMQ on a host: get-netadapter | disable-netadaptervmq

Of course, have your environment's firmware up-to-date at all times.

Also, be sure to get every update and recommended hotfixes for Windows 2012(r2) failover clusters:

http://social.technet.microsoft.com/wik ... -2012.aspx

http://support.microsoft.com/kb/2920151

Oh, and check if your Windows hosts have the right persona.