All posts in category VMware

BIOS settings in a VMware ESX(i)/vSphere Environment

Over the last period I’ve noticed that a lot of customers aren’t aware of BIOS settings that can be changed as a best practice for VMware ESX(i)/vSphere environments. In this article I want to outline some of these best practices specifically based on HP Hardware, but feature-like options are available within other vendors as well. […]

My VCDX Defend Experience

Let’s directly start with the most important news; I’ve passed my VMware VCDX defend and got VCDX Number #040! Very Cool!! The story: two weeks ago I travelled to Munich to do the final and biggest step in the VCDX Certification path – Present and Defend your Design & Implementation Plan. In preparation to this […]

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 […]

Testing Scenario's VMware / HP c-Class Infrastructure

Since my blog about Understanding HP Flex-10 Mappings with VMware ESX/vSphere is quite a big hit (seeing the page views per day) I decided to also write about the testing scenario’s which should all be walked through before taking a design as this into production. In my blog I stated: Last word of advice: while implementing […]

Creating easy to identify LeftHand Volumes on ESX/vSphere

Coming from mostly HP EVA environments I got used to identify a Volume/LUN by there LUN number which was a real unique identifier. I could always “talk” LUN number and be sure that it was understood and unique. So ever since I’ve been working with our LeftHand environment I disliked the way that every Volume/LUN is marked […]

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 […]

VMFS- and Block Size is important for virtual RDM's

A little post from me since I  got an error message while working with large RDM’s. While I twittered out the message it seemed that Duncan Epping from VMware had a posting ready at which he only had to press the “Publish”-button. See his very helpful article over here. What you might have noticed is that a RDM’s size is displayed as the real size […]