There was a good discussion on twitter on memory overcommit and the value of memory overcommit and whether you should or should not use it in production. What struck me in this was that on a subject like this, there is so much misunderstanding although there is a lot of documentation available that can explain […]
ESX
About ESXi lockdown mode
When you build your virtual infrastructure with only ESXi hosts that you also lock down for security reasons, you might be in for a little surprise when you want to get your VI up and running again after major maintenance or a failure. First thing to do after the virtual infrastructure has been down, is […]
StorMagic SvSAN with High Availability mirroring
Recently I had the opportunity to review StorMagic’s SvSAN software. Their current release available from their website is only compatible with VMware ESX 3.5, since my home lab is already running VMware vSphere I received the latest beta 4.1.913 which does work with vSphere. In this review I will not write on absolute performance since […]
Little tip for UDA 2.0 beta users
When playing with the new UDA 2.0 beta, I was missing a very important feature: After the PXE boot menu is displayed, you can’t end or skip the menu and continue booting from local harddisk. I e-mailed with Mike Laverick, who got my into contact with Carl Thijssen, the developer of the UDA 2.0. Carl […]
Reclaiming unused VMDK space with storage thin provisioning
Storage thin provisioning can save space on a VMware Virtual Machine Disk File (VMDK), but reclaiming that space requires the use of tools described below. I have experimented with Virtual Machine Disk Format (VMDK) thin provisioning since the beta release of vSphere 4.0 as I don’t have much storage space to spare. Before we get […]