I second the vinternals commentary on Symantec. The security software vendor joins the ranks of the clueless with their wonderful support document:

Question/Issue:
Is ESX server VMotion supported with SAV and SEP?

Solution:
Symantec does not support ESX server VMotion at this time.

Vendors are shameless. They charge you a ton for support, then they'll do whatever they can to point the finger at somebody else when you call.  It's one thing to put a disclaimer in for performance issues. Virtualization sometimes exposes weird performance issues, and if it's a performance issue you're having you might need to do some work to troubleshoot it on your own if it isn't a blatant, completely reproduceable problem with the vendor's software (like CPU-sucking spin locks).

To learn more and to read the entire article at its source, please refer to the following page, Vendors Who Don't Realize Virtualization Is Here To Stay : Bob Plankers, The Lone Sysadmin

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