Posts under Tag: vSphere
iBook / Nook? What really?

It took us a while to figure this one out, but finally we managed to create a proper epub version of our book. Converting from Kindle to iBooks / Nook is not easy, but after using multiple tools and manually editing the book using Sigil we managed to create version which was submitted to the iBooks store and Barnes & [...]

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No Jumbo frames on your Management Network! (Updated!)

I was just reading some of the comments posted today and Marc Sevigny, one of the vSphere HA developers, pointed out something which I did not know. I figured this is probably something that many are not aware of so I copied and pasted his comment: Another thing to check if you experience this error is to see if you have [...]

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Avoid changing your VMs IP in a DR procedure…

I was thinking about one of the most challenging aspects with DR procedures, IP changes. This is a very common problem. Although changing the IP address of a VM is usually straight forward it doesn’t mean that this is propagated to the application layer. Many applications use hardcoded IP addresses and changing these is usually a huge challenge. But what about using [...]

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Enabling Hot-Add by default? /cc @gabvirtualworld

Gabe asked the question on one of my recent posts if it made sense to enable Hot-Add by default and if there was an impact/overhead? Lets answer the impact/overhead portion first, yes there is an overhead. It is in the range of percents. You might ask yourself where this overhead is coming from and if that is vSphere overhead or… [...]

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Why selecting the correct OS when creating/upgrading a VM is important

I had a discussion yesterday about why one would care about changing the “OS” type for a VM when it is upgraded, or even during the provisioning of a VM. I guess the obvious one is that a VM is “customized / optimized” based on this information from a hardware perspective. Another one that many people don’t realize is that [...]

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Fiddling around with SRM’s Storage Replication Adapter – Part II

** Disclaimer: This is for educational purposes, please don’t implement this in your production environment as it is not supported! ** After my article this week about (ab) using the SRA provided through Site Recovery Manager to fail-over any LUN I expected some people reaching out to me with additional questions. One of the questions which came in more than once was [...]

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“Hacking” Site Recovery Manager (SRM) / a Storage Array Adapter

** Disclaimer: This is for educational purposes, please don’t implement this in your production environment as it is not supported! ** Last week I received a question and I figured I would dive in to it this week. The question was if it is possible to fail-over LUNs using VMware Site Recovery Manager (SRM) which are not part of the Cluster which [...]

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