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Virtualization on the Edge

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I really like to include graphs in my whitepapers and blog posts whenever possible. I find that lots of people read the first few pages or paragraphs, then skip to the graphs. And if they are really interested they will go back and read the sections that interest them.

In my recent blog post on VROOM! I spent a bit more time that usual on the graph. It seemed that everybody who reviewed the blog post had a couple of comments - About the graph. It started out with what was probably too much data and ended up a much better and simplified graph due to all the comments. Thanks for all the help to those who commented.

Just for fun I have decided to post the original version of the graph below. You can compare it with the final version that was published on VROOM! Comments are welcome :)

1vCPUwFTvs2vCPUgraph_originalversion.JPG

The big difference with this earlier version is that there are more data points included for both FT enabled and disabled. I had also used a different color for the previous generation processor tests to make it easier to spot them. Once I decided that all these data points weren't needed the different colors weren't needed either.

Even though I agree that the final version is easier to read and understand, part of me still likes this earlier version with more data that takes a few minutes to figure out what is going on.

Todd

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I had lunch today with a group of IT people that were all interested in talking about virtualizing Exchange. Some had already done it and others were still in the early planning stages. What was most interesting to me is how much the conversation around virtualizing Exchange on ESX has changed over the past couple of years.

At VMworld 2007 I presented a session with Kong about the performance of virtualized Exchange Server 2007 on ESX 3. At that time most people were really concerned about performance and supportability. The tests that I did showed that the performance was great. The support aspects were finally addressed when Microsoft announced the SVVP programa little later.

The discussion I had today was mainly focused on two areas. The first was what are the best practices for virtualizing Exchange. We have done lots of testing with Exchange over the last several years and the consensus is that you can use Microsoft best practices for physical machines to size your virtual machines. There are lots of detailed tests that support this result, but that is a quick way to summarize it. The second issue was that the Exchange Admin was not ready to give up his physical server and for one reason or another did not want to embrace running Exchange in a Virtual Machine. This is a more difficult issue to deal with, but one way is to do pilot program with a small number of users and then build from there.

The issue no longer seems to be can it be done, but how can you help me do it.

Todd

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The whitepaper that I finished recently was new for me on many levels. It was my first whitepaper here at VMware which meant that I learned the review and publishing process. ESX 4.0 was also still under development when I started, so I got to learn about how to get new builds and report bugs. Which was all pretty cool.

I also used a NetApp FAS6030 storage array for the testing. Prior to this work I didn't have much exposure to NetApp and I didn't know what to expect. There are a few things that I wanted to note here that were surprising to me in working with the NetApp array for the first time.

1. The snapshots work really well. I was impressed with how the aggregate level snaps worked and how well they performed.

2. NFS on the NetApp array is better than I expected. I didn't think that it would be as close as it ended up being to the FC results.

3. It is really easy to use NFS with ESX. I didn't realize how easy it use NFS as a data store for ESX until I had done the setup.

4. The NetApp people that I worked with were good and it has been cool to interact via twitterand blogs with them as well. OK - so this shouldn't be categorized as surprising.

These were just a few things that didn't really fit in the whitepaper and the type of general stuff I think makes for good blog posts (If you are into this kind of tech stuff).

Todd

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