Nov 15

Bitcoin Mining

Ever since I wrote that article about bitcoins, a fair number of readers have been asking about mining and general investment into bitcoins. We’re putting together a new article. We hope to review some bitcoin gear in the coming months. Continue reading

Nov 08

VMware ESXi host fails with PSOD after upgrading to 6.5 Update 1 (2151749)

Just when you thought it was safe to upgrade a Pink Screen of Death (PSoD) is confirmed. If you are thinking of upgrading from 6.5 u2 to update 1 you may want to hold off. This problem has no resolution and was officially documented by VMware on Oct 25, 2017.

Symptoms

  • Upgrading to ESXi 6.5 Update 1 produces a PSOD.
  • ESXi host using 10GB NICs

Continue reading

Oct 02

Unsupported hardware family vmx-12 error on vmware vsphere esxi 6 or 6.5

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Exporting to an OVF file results in an unsupported hardware family vmx-12 error. Here are a few possible fixes.

I spent hours exporting a virtual machine (vm) to an OVF format only to discover that VMware vSphere 6.5  gives me an error when I tried to deploy it.

Error message: Unsupported hardware family ‘vmx-12’ error  ( also applies to vmx-10, and vmx-11 )

Cause: You created the VM using Workstation 11 or 12/12.5 and didn’t set the vm version to 10 or below before creating the OVF. Continue reading

Sep 22

Windows 10 Pro Creator’s edition 2017 update breaks VMware Workstation 12 and 12.5 NIC Build 1703

If you read my posts then you know we’re been here before. The Windows 10 Pro update called the Creators Edition released in September 2017 (Build 1703) breaks your VMs running on VMware Workstation pro 12 or 12.5. It is possible that 11 or earlier may have this same problem.

Instead of simply sending you back to my old post I thought I would share how to fix this problem quickly.

Summary: The VMs suddenly no longer see the Network Interface Card (NIC) of your computer running Windows 10 Pro. Just to be clear, the VMs can be running any version of Windows and have this issue. The Workstation is running on Windows 10 Pro. Continue reading

Sep 15

Crypto Currencies or Gold?

It goes without saying that most people have heard of crypto currencies. Those digital “dollars” based on something called a block chain. Allow me to confess that I didn’t pay much attention to Bitcoin at first. As an IT expert and a writer about the financial markets many are shocked that I didn’t “get it”. I wanted to share with others the “cons” I saw with Bitcoin. Continue reading

Jul 07

Estimating the space requirements for a small server room

Small companies relocate all the time. Many companies appear to get stuck improvising rooms to put the equipment and often end up using a closet. In such cases, poor ventilation ends up causing undo stress of the equipment and bringing some devices to a premature end. I saw one switch that looked like it had partially melted on the bottom. The textured plastic was smooth and discolored. Continue reading