ESX4 / Intel Xeon L5335 / VT / VT - d / vmDirectPath

Am just concluding the planning phase for a complete reorganization of our (small) VMware infrastructure.  Currently have 2 x popular Dell PowerEdge 2950 with 16 GB of RAM as ESX 3.5 hosts.  Are four-core Intel Xeon L5335 (2 GHz, 1333 MHz FSB) processor.  As I buy some new Dell R710 my production ESX hosts and installing vSphere 4.0 on them, I want to reuse my 'old' ESX hosts:

1 for the virtual machines to Test and run backup

1 for the purposes of the DR

In the host used for virtual machines to Test/Backup, I want to use vmDirectPath to connect two external SATA hard drives.  I've been watching various documents and discussions here.  In a discussion, someone has posted:

«Do not mix VT - d (VMDirectPath i/o) and VT (hardware assisted virtualization).»

I checked the VMware documentation: http://www.VMware.com/PDF/vsp_4_vmdirectpath_host.PDF

I looked at Intel CPU for the L5335 documentation: http://Ark.Intel.com/product.aspx?ID=30791

After all this, I'm confused.  The Intel site, says the L5335 supports 'VT - x'... is that "Vermont", "VT - d" or something else?  What's the story by saying 'do not mix VT - d and VT'... I mean, that's what that means yet?

If someone can clarify for me, that would be appreciated.

> In the case of a #2, we would usually say "mix them" as a phrase meaning the same as "do not confuse them. # 2 what you mean?

Yes, exactly.

Thank you.

---

MCSA, MCTS Hyper-V, VCP 3/4, VMware vExpert

http://blog.vadmin.ru

Tags: VMware

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