All posts tagged VMware

Reset VMware Auto Deploy Database to default

One of the things that the VMware Auto Deploy Database contains is the ESX Images that are uploaded and related to the DeployRules that are created. For instance, if I add an ESXi Image to the software depot and create a new DeployRule using the following commands: Add-EsxSoftwareDepot “” Get-EsxImageProfile | ft -autosize New-DeployRule -Name […]

NSX bug while using Logical Switch as a Destination in the Edge Firewall

While working on a cool VMware NSX project we have discovered a bug within the Edge Firewall when using a “Logical Switch” as a “Destination”. Lets first start off with making troubleshooting easy and adding the “Rule Tag” and “Log” information to the Firewall view.

Joining VMware PSO!

Its official now, I’m joining VMware PSO starting at the 1st of April! (no joke) and will become a direct colleague of Frank Denneman who joined PSO earlier this year. Last year I’ve spoken to Duncan Epping about PSO and the fact that he was thinking about a change in his position. His career move obviously meant that a PSO position will […]

Using LeftHand Snapshot techniques within a VMware Environment

I recently got a question from the backup architect asking me about LeftHand snapshot techniques to make backups of VM’s. The current storage design classifies VM’s based on their Recovery Point Objective (RPO) per LUN as shown in the overview below. Within this storage design it could be a good solution if we automate LeftHand […]

SCSI Bus Sharing on the VM Boot Disk SCSI Card

Lately I’ve been asked to review a PID (Project Initiation Document) for a new File Server project based on Linux/GFS v2 (General File System) hosted on VMware vSphere. I noticed that the PID was talking about a dynamic File Server that could (and even would) grow towards 100 TB storage space. That number immediately set […]

vSphere: Freezing VMs after deleting a volume from the SAN

We are running a newly designed vSphere 4.0 environment connected to a very big LeftHand iSCSI environment. Lately we discovered some major problems with a couple of VM’s totally freezing for about 30 seconds, this problem seemed to only occur on several VM’s from one specific host, so time to do some research on this […]

VMotion and Exchange 2010, not supported

Just a short blog post about Microsoft Exchange 2010 in combination with VMware vMotion. We are running this combination hosted on vSphere platform and noticed that whenever we vMotion over a Exchange 2010 Mailbox server that is using DAG (Database Availability Group’s), the DAG will fail. 25-05-2011 Update for Exchange 2010 SP1: Thanks to Toti […]

VMware VMotion, how fast can we go?

Lately while I was testing out specific failover behaviors in vSphere, I accidently discovered that VMotion Speeds (MB/s) are logged in the the /var/log/vmkernel, now that’s cool! Issue the command tail -f /var/log/vmkernel and than initiate a VMotion. You should get info like this: Host VMotionning to (receiving) Nov  7 21:13:14 xxxxxxxx vmkernel: 10:06:06:18.104 cpu3:9131)VMotionRecv: 226: 1257624621919023 […]

Understanding HP Flex-10 Mappings with VMware ESX/vSphere

I’ve written this blog as an add-on to Frank Denneman’s blog about Flex-10 which you can find over here. Goal of this blog is to get a clear vision about the Flex-10 port mappings that HP uses to facilitate their blades with NIC’s, with the special focus towards VMware ESX/vSphere. If you are looking for the HP FlexFabric mappings […]

VMware VCDX Design Exam, watch out for the "Next"-Button!

Yesterday I made progress in my pursuit to get the VMware VCDX Certificate by completing the Design Exam in Frankfurt. I’ve got a very important notice to make about this exam for all of you who are going to do this in the future. The exam consists of 2 section, one section in which you will […]