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Firewall diagram – version 5

23 Feb 201021 Jun 2013 Forbes Guthrie7 Comments

Here is version 5 of Dudley Smith’s fantastic Firewall Diagram: And here is the “source” spreadsheet for version 5. It makes looking for a specific port when troubleshooting much easier.

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First vSphere 4 book in Spanish

22 Feb 201017 Nov 2012 Forbes Guthrie1 Comment

I received an email from my friend Jose Maria Gonzalez, to say he has just published a new book.  In his own words: The time has come and I am delighted to announce the details of my new book, a book I’ve been working for the past four months without a “rest”: 101 Secrets VMware […]

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n+1 is hogwash!

15 Feb 2010 Forbes Guthrie3 Comments

Too frequently I hear the expression n+1 as a model for ESX clusters to provide High Availability.  If you EVER expect to patch ESX servers without VM downtime then you need at least(†) n+2.  When running your clusters to only n+1, you can never safely put one of your hosts in Maintenance Mode; not if High Availability is important […]

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esxtop precis updated to version 1.1

1 Feb 2010 Forbes Guthrie1 Comment

I’ve update the esxtop precis to version 1.1. This is just a small update, with a couple of corrections and incorporating the updates that Duncan has recently added recently.  As ever, this is really Mr Epping‘s great work that I’ve just re-presented  in a handy little card. Feel free to help yourself.

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