VMware vSphere 4 default installation settings

13 May, 2010

When I was writing an installation document on vSphere I thought and have some friends on twitter check the doc and comment on it. I received a lot of responses and decided to make a blog post out of it, so here it is.

Converting vscsiStats data into Excel charts

18 February, 2010

Some time ago I wrote a posting on how to use vscsiStats to gather even more data from your VMs and their SCSI performance ( See: Using vscsiStats – the full how-to). Last week I received an e-mail from Paul Dunn who had written an Excel macro that can read the output from the vscsiStats [...]

Memory overcommit in production? YES YES YES

5 January, 2010

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 [...]

About ESXi lockdown mode

30 November, 2009

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

20 November, 2009

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 [...]