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David Stamen

Senior Virtualization Engineer

VCAP-DCA | MCSA | VMware vExpert | Cisco Champion | PernixPro

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vExpert 2017

February 08, 2017

I am honored to have been selected as a VMware vExpert once again for 2017!


Installing Ubiquiti Unifi Controller

December 02, 2016

I have been using Ubiquiti equipment for awhile at home and I figured i would finally write a blog post about it. Ubiquiti equipment is “enterprise class” eq...

vSphere 6.5 - vCenter HA (VCHA) Issues

November 21, 2016

So as everyone has probably seen, vSphere 6.5 is now GA. One of the features i have been waiting for the most is vCenter HA. I have spent some time trying to...

Using Veeam Powershell to Manage ReIP Rules

April 18, 2016

Hello! Welcome to my First Veeam PowerShell Script! I have been working on tons of migrations using Veeam Backup and Replication and need to create re-ip rul...

Using PowerCLI to Install Host VIBs

March 03, 2016

So currently Cisco has an issue with installing their ENIC and FNIC VIBs through Update Manager for ESXi 6.x. Until that is resolved I need to manually push ...

vExpert 2016

February 05, 2016

I am honored to have been selected as a VMware vExpert once again for 2016!

Using Ansible to Run Powershell Scripts

February 04, 2016

In the midst of playing with Ansible and figured my most common use case would be executing powershell scripts on remote servers, so scavenged around and put...

Using Ansible to Create Cisco ACI Filters

February 03, 2016

In the midst of rolling out Cisco ACI, we have a need to automation creation of filters to apply to contracts. I tried to use the ACI-PowerTool for this task...

Cisco Champion 2016

January 31, 2016

I am honored to have been accepted once again as a Cisco Champion for 2016!

Using UCS PowerTool To Set Equipment Labels

January 15, 2016

For conformity, we like to set the UCS Equipment labels to match the Service Profile Name. This allows us to match it quickly without having to dig down into...

Unable to Boot EFI VM on ESXi FC Storage

January 13, 2016

For the past week, I have been troubleshooting the strangest issue. I have been attempting to move some Windows 8.1 VM’s from our legacy datacenter(iSCSI) to...

Using UCS PowerTool To Upload UCS Firmware

January 11, 2016

It’s patch time! That means time to upload the firmware bundles to all my UCS domains. Instead of doing it manually I figured i would create a quick script t...


VCAP6-Design Beta Study Guide

December 17, 2015

It is now VCAP6-Design study time! Here is my blueprint laid out, and hopefully will be populated with some content.

Using CLI to Manage DVS Host Uplinks

November 30, 2015

Ever needed to modify a DVS uplink configuration from ESXi Shell? I am currently troubleshooting some issues with DVS uplinks no longer being assigned on reb...

Installing Host VIB's Using PowerCLI

November 30, 2015

Normally when i need to install and update a host VIB I use Update Manager. However there is currently a bug with Cisco’s latest enic/fnic drivers that wont ...

Configuring Multiple UCS VLAN's

November 23, 2015

We are currently working on some Cisco ACI Integration and wanted to add a large VLAN Pool to a UCS Configuration.

Reusing Horizon View Desktop Names

November 11, 2015

Have you ever worked with a Horizon View pool with 10 VM’s and deleted 3 and it recreated as 11? May want to pay attention to learn how you can reuse view de...

VCP6-DCV Study Guide

October 14, 2015

About to start to study for the VCP6 once again. So I figured I would start over with the guide as much of the blueprint has changed.

Unregistering vSphere 6 VCSA from PSC

October 13, 2015

So I am in the process of doing some vSphere 6 testing and needed to test a redeployment of one of my VCSA’s. The problem is when I went to redeploy it I got...

ESXi 6.0 Update 1a Released

October 06, 2015

ESXi 6.0 Update 1a has been released. If you have been following KB2124669 in regards to the the NETDEV WATCHDOG issue causing an ESXi host to hang. The upda...

ESXi 5.5 Update 3a Released

October 06, 2015

ESXi 5.5 Update 3a and its associated patch have been released. If you have been following KB2133118 in regards to the the Snapshot Consolidation causing Vir...

Indexing your Horizon View Database

September 30, 2015

I am currently troubleshooting some issues with the Horizon event database having some performance issues. Working with support they pointed me to KB2094580.

Upgrading Horizon View Linux Desktop

September 24, 2015

Horizon 6.2 is now available and Linux support has improved. Previously it was only supported on a limited set of older operating systems.

Upgrading vRealize Operations to 6.1

September 22, 2015

vRealize Operations 6.1 is now available, I thought I would put a quick guide together as I go through the upgrade process.

Unable to SSH to vSphere 6 VCSA or PSC

September 21, 2015

So I am in the midst of setting up a vSphere 6 POC and it has been a bit since I played with it. I came across a problem I thought i would document and share.

Unable to join PSC to Domain via Webclient

September 21, 2015

I am actually pretty surprised this bug still exists. I came across this issue with my first deployment of vSphere 6. Now I am circling back around to do a P...

Upgrading Horizon View 6.1 to 6.2

September 16, 2015

I had the opportunity to upgrade my Horizon View environment from 6.1 to 6.2. As always VMware has made this very easy!

Using PowerCLI to Detach Luns

September 14, 2015

I thought I would share this script, its been circulating a bit but I feel it is a nice one to have in your toolkit.

vSphere 6.0 Update 1 Released

September 10, 2015

Today vSphere 6.0 U1 is released. This is normally the update everyone waits for before upgrading their production environments to the latest version. I thin...

How To Deploy a Jekyll Blog

September 08, 2015

So after getting my blog up and running I figured I would do a quick how-to, on how to get a blog up and running. Its actually something you can do in less t...

Welcome to Jekyll!

September 04, 2015

New Blog Platform! I have had a bit of issues with performance on my blog recently and looking on how to not overpay for hosting services. A good friend of m...

Honored to be a PernixPro

May 07, 2015

I have been glad to have been accepted as a PernixPro. Look forward to seeing some more FVP related content on this blog, I am honored to have this title.

PowerCLI - Extend VMDK and Guest OS

April 02, 2015

So as always things change across multiple Window’s operating systems and VMware revisions. I had a need to extend the drives on about 50 VMs today and reall...

VCP6-DCV Beta Exam

April 01, 2015

VMware has announced https://mylearn.vmware.com/mgrReg/plan.cfm?plan=64178&ui=www_cert the availability of the VCP6-DCV beta exams. The beta exam include...

SRM - Unable to uninstall due to UAC

February 18, 2015

I was trying to remove SRM 5.1 from our environment and kept getting an error that UAC must be disabled. Even though UAC was set to “Never Notify” SRM didnt ...

PowerCLI - Enable CPU and Memory HotAdd

January 14, 2015

I had a need to enable CPU and Memory hotadd to many virtual machines prior to a template being updated, doing some research there is no easy way, however th...


Cisco Champion 2015

November 26, 2014

I am honored to have been accepted as a Cisco Champion for 2015! I guess this means I will continue and post to expand content on Cisco UCS and Cisco IronPor...

Unable to Install .NET 3.5 on Server 2012R2

September 11, 2014

So upon trying to install .Net 3.5 on a new server today it would not allow me to, it kept telling me the source files were unavailable even after pointing t...

Configuring ESXi 5.5 Syslog Collector

June 10, 2014

Thank you to everyone who listened to me on the EMEA vBrownbag. Here are copies of documentation and scripts on how to configure ESXi to use the Syslog colle...

Configuring ESXi 5.5 Dump Collector

June 10, 2014

Thank you to everyone who listened to me on the EMEA vBrownbag. Here are copies of documentation and scripts on how to configure ESXi to use the remote dump ...

Create VMFS Datastore Using PowerCLI

May 22, 2014

For upcoming testing there was a need to create 140 datastores on a cluster for testing. Who wants to do that much clicking and typing? Not me! You can use t...

HA Error: Network Redundancy

May 08, 2014

When setting up a cluster for testing you may not have 2 nics to use for management. to bypass the warning you can configure HA to not alert you for this iss...

HA Error: Datastore Heartbeat is less than 2

May 08, 2014

If you are configuring a cluster with less than 2 datastores, you will receive an HA warning “The number of heartbeat datastores for host is 1, which is less...

Blocking Attachments With Executable Content

May 01, 2014

I don’t know whats going on in the past few weeks but the sheer amount of zeroday exploits via email have risen. To protect yourselves against this I would r...

Nested ESXi and NFS

April 29, 2014

I was working today on configuring NFS/Openfiler in my lab and came across an issue that my nested ESXi host’s couldn’t talk over the VSS (Standard Switch) I...

Cisco UCS and Native VLAN Tagging

April 29, 2014

Building out some new servers today I came across an issue where the servers would have no network connectivity even though the vNICs were properly tagged an...