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.


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

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

Mar 20

VMware vSphere ESXi 6.5b released

VMware has released version 6.5b of their hypervisor vSphere ESXi.

This release of vCenter Server 6.5.0b delivers a number of bug fixes. From Vmware’s site:

  • Updates to time zones in the Linux Guest Operating System customization. vCenter Server Linux guest operating system customization supports latest time zones. For more information on time zone changes and daylight saving time (DST) changes in Linux guest operating systems, see the Time Zone Database by Internet Assigned Numbers Authority (IANA).
  • Updates to time zones in the Windows Guest Operating System customization. vCenter Server Windows guest operating systems customization supports the latest time zones. For more information on time zone changes and daylight saving time (DST) changes in Windows guest operating systems, see the Microsoft Knowledge Base article 3162835.
  • Updates to JRE package. The Oracle (Sun) JRE package is updated to version 1.8.0_121 to support Turkish timezone.
  • Additional functionality to the vSphere Client. This release delivers additional functionality to the HTML5-based vSphere Client. For more information, see Functionality Updates for the vSphere Client.

We have fully tested vSphere ESXi and highly recommend this latest version.

Mar 20

Microsoft Global Azure Bootcamp April 22, 2017

Did you hear? April 22, 2017 will see a global Azure bootcamp happen! With 152 confirmed locations (as of this writing), you’ll no doubt be able to find one near you.

Be sure to follow us on twitter (#CTOBOB) for up to date news!