That's not really an issue, Ramius. Encrypting the whole disk is not necessary. Why encrypt the UNIX OS and the apps? All that is necessary is to encrypt the user partitions under UNIX, something that has been done in the enterprise far longer than Windows security has been around. OSX is certified UNIX... with industrial strength permissions, accesses, encryptions and management from UNIX.
You’ve told me it’s not an issue, and didn’t provide me with any solution, much less an enterprise-level key management system.