VMware: Not kidding about VMotion GigE Requirement

In case you’re curious/adventurous/broke enough to try configuring your VMotion network on Fast Ethernet instead of Gigabit Ethernet, here’s what you can expect.

First, a warning from your VI client that you’re venturing into unsupported territory:

A friendly warning

A friendly warning

And then, if you go ahead with the VMotion, a slight pause on the VM in question.  The following is output from running while true; do date; sleep 1; done on a Linux guest during the VMotion:

Tue Feb  3 13:23:17 PST 2009
Tue Feb  3 13:23:18 PST 2009
Tue Feb  3 13:23:19 PST 2009
Tue Feb  3 13:23:20 PST 2009
Tue Feb  3 13:23:21 PST 2009
Tue Feb  3 13:23:22 PST 2009
Tue Feb  3 13:24:12 PST 2009
Tue Feb  3 13:24:13 PST 2009
Tue Feb  3 13:24:14 PST 2009
Tue Feb  3 13:24:15 PST 2009
Tue Feb  3 13:24:16 PST 2009

Note the fifty second pause between 13:23:22 and 13:24:12? Ouch…

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