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Scott Drummonds on Virtualization

VMware Thin Disks on EMC Virtual Provisioning

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Even before I left VMware for EMC I was being asked to comment on “thin on thin”: the use of VMware thin VMDKs on virtually/thin provisioned storage.  As a VMware employee I recommended VMware’s thin provisioning but referred to storage vendors for their own best practices.

Now, as a member of the storage vendor community, I will answer for EMC. I will do so with detailed text from an outstanding TechBook I recently discovered on EMC’s Powerlink. This paper, Using Symmetrix Storage in VMware vSphere Environments (Version 7), provides incredible detail on the relationship between VMware thin disks and Symmetrix virtual provisioning. Its guidance is clear and simple.

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