vSphere: Removing An Inaccessible NFS Datastore

Ever came across the message: 

Step 1

Despite the fact, it seems to be mounted you can’t access the datastore. Here’s how you quickly can resolve this issue:

Enable it through the WebSphere Client: <target host> – Manage – Settings – Security Profile – Services; select ssh and Edit… to enable it


Log into ESXi via your terminal application using the ssh command ssh -l root <target host>


Run the  command  esxcli storage filesystem list (and optionally  esxcfg-nas -l afterwards)


Run the  command   esxcli storage filesystem unmount -u 62a6d60c-dc04dc3c (you need to copy the UUID of NFS Datastore from file system list) 


Change to the directory  cd /vmfs/volumes/ (doesn’t work directly when working with the full path in the command below – at least not in my case)

Run the  command   esxcli storage nfs remove -v NFS\ Datastore 


Remount your NFS Datastore using the vSphere Web Client and you’re done.

Have fun!

Booting vSphere ESXi 6.0 From USB Stick To Successfully Build a VSAN 6.0 – Including An Apple Mac Mini Late 2014 (7,1)

Finally, I bought a brand-new Apple Mac Mini Late 2014 (Code 7,1) with a Fusion Drive (1.13TB) to complement my two legacy 2011 models. My intention was to build a VSAN (version 6.0) rather to replace my NAS device that is slowly but steadily running out of capacity! Before I bought the new Mac mini I extensively read blog posts about VSAN and the Mac mini systems (huge thank you to William Lam, Cormac Hogan, and Duncan Epping!).

The following blog posts and resources most helped me to make it work (in random order):

It was quite a journey until I got Mac mini 7,1 booting from the USB stick whereas my other two systems (version 5,2) were booting OotB from the stick. Not at all true for the latest version as I disappointedly found out! This was followed by hours of intense research on the web. Please use this post as your shortcut.

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Nested Hyper-V on vSphere ESXi

After a long break, I’m finally back with exciting instructions on how to virtualize Hyper-V servers! I spent my spare leisure time to co-found VASOUMA, a dance project and did some stuff for my company wellwave.net. For those reasons you haven’t read net new blogs on cloudjockey.

I wanted to explore more in virtualisation and I was particularly attracted by Microsoft’s brand new Hyper-V 3.0 with an interesting set of new features. It’s a very solid hypervisor and I definitely needed to look into it. However, I didn’t want to destroy my vSphere deployment at home. Thus, I was left with only one choice. This was to virtualise Hyper-V and let it run on top of a vSphere environment. So, I went to set up ADS, VMM, and started to install Windows 2012 Server, which includes Hyper-V 3.0. When I tried to add the role of a Hyper-V instance to that freshly deployed Windows 2012 Server things started to crumble…

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The Virtualized Mac Mini Lab

VMware vSphere 5.0 Update 1 on Apple Mac Mini and virtualized Apple Mac OS X 10.7.

For many of my professional years my opinion has been that I don’t need a to run an own lab. I have changed my mind. With all the amazing software that’s been released on increasingly tighter release cycles, I’ve found myself not being able to cope with knowledge wise. Since, I am living in a small apartment I am very limited in space. Therefore, I need a lab environment that is very space efficient. My first obvious choice was an Apple Mac Mini, despite of only supporting one Gigabit network interface (which is a shortage on a Mac Mini server system, IMHO). Blogs released in 2011didn’t sound promising that vSphere on a Mac Mini might ever work. Hence, besides being constrained on time, I stopped my own investigations on this topic. Instead, I started to spend a decent amount of time finding the right equipment equal to the size of a Mac Mini. I was only partially successful. But after reading the blog post from Paraguin (thank you for everything!) earlier this year, I got really excited that he got vSphere 5 running on an Apple Mac Mini. The next day I went to an Apple Reseller and bought a Mac Mini 5,1 (Intel Core i5, 2.3GHz, 2 GB RAM) as well as a 16GB RAM Kit (Corsair CMSA16GX3M2A1333C9).

I shortly want to explain to you what I did in order to get it working. First of all, in preparation, I spent some time reading these posts: VMware Community thread, ESXi on Mac Mini, Lion on ESXi, recommended RAM, RAM checker how-to, unetbootin, and register & download ESXi. Many thanks to all of the bloggers and other folks who contributed to making it happen! Now, let me introduce you to the 7 steps to have your Lion running on top of vSphere!

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