VMware vSphere clustering Q&A (VSP1682)
Today I attended session VSP1682 ‘VMware vSphere clustering Q&A‘ hosted by Frank Denneman, Duncan Epping and Chris Colotti. After a short introduction the Q&A started and below you will find my top 10 questions. Q1. Are the old, vSphere 4, constraints in vSphere…
Great new VMware whitepapers
Usually everybody is on holiday during this period and because of that we lack new projects and great news. ‘Komkommertijd‘, as we call it in the Netherlands. Fortunately (for us) Duncan Epping, known from Yellow-Bricks, isn’t on holiday (yet) and he pointed me to some…
Hyper-V: Do you want to run HA OR Linux?
Last night, after my son’s first birthday, I checked my missed twitter messages and a retweet from Duncap Epping caught my eye. It was a link to an article from Eric Gray on vCritical about HA for Linux guests on Hyper-V. Now you will probably…
Thoughts on high availability
With all the news and buzz around vSphere it’s easy to get carried away by all the new stuff appearing. But even with all these new features we still need to think about High Availability and how to design the infrastructure. Everytime we design a…
ESXi bug when changing IP address
Yesterday I ran into VMware HA problems again. With my past HA troubleshooting experiences I thought configuring HA wouldn’t be a problem any more but unfortunately it bit me in the ass again. We all know VMware ESX implementations where not all information, access, etc…
Citrix’s definition of HA
Today we had a very interesting presentation from Citrix. At one point the discussion was about the Citrix’s definition of High Availability. I really can imagine that this is getting a confusing discussion. VMware says: HA is to resolve a single host failure. Citrix however…
VMWorld Euope 2009 – VMware introduces vCenter Server Heartbeat
February 10th I participated in a VMware WebEx on their new vCenter addon, vCenter Server Heartbeat and today the news will be released in Cannes at VMWorld Europe 2009. vCenter Server Heartbeat is an important addon which creates high availability for vCenter Server. vCenter Server…
HA problem checklist
Last few weeks I have been very busy solving HA issues at a client site. As you may have read I solved the problems by swapping out the USB sticks and troubleshooting BIOS settings. Now my collegues asked me if I could write down all…
HA problems caused by BIOS setting?
It may sound a bit strange, BIOS settings causing HA problems…… At the client site were I previously had problems with faulty HP USB sticks I still experience problems. After the problems with the green USBs after 1,5 week we received new black USBs. This…
Faulty HP ESXi 3.5 USBs
At the same client site where we had the problems with VMware Update Manager and ESXi we are now struggling with HA. We can NOT get it to work and even WMware support can NOT get it to work either. We have been on the…
VMware High Availabilty explained
With the release of VMware ESX/ESXi 3.5 and VirtualCenter 2.5 U3 VMware implemented a few interesting changes in it’s Availability implementation. In this document VMware HA and the latest changes are described in detail. This document is intended for experienced HA cluster admins who are…