Scott's Weblog The weblog of an IT pro specializing in virtualization, networking, open source, and cloud computing

Quick Note on ESX and ESXi Storage Multipathing

Rich Brambley (of VM /ETC), Duncan Epping (of Yellow Bricks), and I were having a brief discussion on Twitter late last week about storage multipathing. Rich initiated the discussion with this update, which prompted me to respond and thus started the conversation. Rich and I continued the conversation via e-mail (Twitter isn’t exactly the best medium for that kind of exchange), and prompted by his questions I did some digging. Here’s what I came up with.

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Hyper9 Beta Invitations

Regular readers may recall that I met with Hyper9 during VMworld 2008 in Las Vegas. Check here for a summary of my discussion with Hyper9. Since that meeting, during which I had a chance to see the beta product, I’ve been in communication with David Marshall (of vmblog.com, who also works at Hyper9) and the rest of the Hyper9 crew about getting some private beta invitations for my readers.

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Virtualization Short Take #20

This week’s Short Take is a collection of links and articles that I’ve seen over the last few weeks (or longer ago, in some cases!) that I thought others might find interesting or useful. Enjoy!

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This is What Snow Leopard Needs

Before the release of Mac OS X 10.5 “Leopard,” the computing world was abuzz with the possible inclusion of ZFS—Zettabyte File System—into the new operating system. That rumor was largely fueled by the rumors swirling around about what would officially become known as Time Machine. It turns out that ZFS did make its way into Leopard, albeit on a read-only basis, and it isn’t the technology behind Time Machine.

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Kodiak Continues to Develop

The enterprising developers at Bluebear are continuing to develop Kodiak, the cross-platform virtualization management tool built using Adobe AIR. Yesterday morning they sent me a “special pre-release” version of Kodiak 0.0.2, assuring me that I was the first to have it. I feel special!

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Important Note Regarding VMware over NFS

We ran into an interesting set of problems at work this week, all of them related to running virtual machines on VMware ESX over NetApp NFS. While we haven’t yet determined the root cause for all of the problem, we did uncover the root cause for one of the issues, and additional testing seems to indicate that one of the other problems may also be suffering from the same condition.

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A Couple of Product Announcements

I don’t generally post lots of product announcements because I’m just too busy to keep up with everything that’s happening. (Either that, or I’m too lazy. Take your pick.) However, there are a couple of announcements that passed through my Inbox this week that I thought I’d share here.

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VMware Expands SVVP Certifications

As I discussed a few weeks ago, VMware’s original SVVP certification was limited to x86 guests with up to 4GB of RAM running on AMD Opteron-based systems. So, while VMware was the first third-party hypervisor validated under SVVP, their validation was a bit limited.

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Virtualization Short Take #19

Virtualization Short Take #19 is here, with news, headlines, and commentary on a few things that have passed my way over the last few weeks. Feel free to share your own interesting tidbits in the comments!

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More on VMware ESX NIC Utilization

Earlier this year, I wrote an article about NIC utilization in VMware ESX in which I discussed some of the details around how VMware ESX uses NICs in various configurations. The testing that prompted that article was primarily centered around IP-based storage (software-based iSCSI and NFS), so naturally the discussion primarily centered around IP-based storage as well.

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