Adding a section from the VMware KB artice for future use.
Are there any caveats that I should be aware of in ESX/ESXi 4.x?
There are a few reasons why a hardware-accelerated operation may fail.
For any primitive that the array does not implement, the array returns an error, which triggers the ESX data mover to attempt the operation using software data movement. In the case of ATS, it reverts to using SCSI Reservations.
VAAI hardware offload cannot be used when:
Read the full KB Article:
So it looks like Ken is right, the plugin is still in "beta" according to my account vSpecialist with no ETA on release. I probably wouldnt have put all the stuff in the FLARE/DART code release fanfare about NFS VAAI if the entire system isnt ready to go.
Recent update: several issues have been resolved and eLabs is working on completing the round of certificaiton tests. Then the results will be submitted to VMware for their blessings.
I would say this should happen very soon, but we are now on the threshold of the holidays.....
More info as it becomes available.....
Latest word is that the vStorage plug-in for "VAAI for NFS" has passed EMC/eLabs testing and has now been submitted to VMware for verification of test results and final certification action.
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>>> mattcowger <email@example.com> 12/27/11 22:56 >>>
"Re: VAAI Support for NFS: How?"
To view the discussion, visit: https://community.emc.com/message/583230#583230