Something that a lot of people haven’t looked in to or just don’t think about is relocating the log files of vCenter, I wrote a short article 2 years ago and thought it was time to reiterate it. By default (Windows 2003) log files are stored in “C:\Documents and Settings\All Users\Application Data\VMware\VMware VirtualCenter\Logs”, and for Windows 2008 log files are [...]

Again an interesting discussion we had amongst some colleagues (Thanks Frank, Andrew and Craig! Especially Craig as most text below comes from The Resource Master). The topic was CPU/Memory reservations and more specifically the difference in behavior of these two. One would expect that both a CPU and Memory reservation would have the same behavior when it comes to claiming [...]

I was just reading Scott Drummonds article on Memory Compression. Scott explains where Memory Compression comes in to play. I guess the part I want to reply on is the following: VMware’s long-term prioritization for managing the most aggressively over-committed memory looks like this: Do not swap if possible.  We will continue to leverage transparent page sharing and ballooning to [...]

VMware just released VMware vCenter Update Manager 4.0 Update 1 Patch 1. This patch resolves the following issues : After upgrading Cisco Nexus 1000V VSM to the latest version, you might not be able to patch the kernel of ESX hosts attached to the vDS (KB 1015717)Upgrading Cisco Nexus 1000V VSM to the latest version upgrades the Cisco Virtual Ethernet [...]

A couple of weeks ago I blogged about the vSphere Security Hardening Guide. Just a couple of days later William “the king of Perl” Lam already produced a script that checks the Hardening Guide best practices against your environment. It produces a great html based report. Source While going through the COS/HOST and VM documentation, I noticed there were quite [...]

While doing a new install of VMware vCenter Server I ran into the following error: Setup cannot create vCenter Server Directory Services instance. Error 28038 This error is caused by the fact that the “Network Service” does not have enough permissions on the root of the drive you’re installing vCenter on. The solution is pretty straight forward and has been [...]

This weeks VMTN podcast is about Homelabs. John  Troyer asked on twitter who had a homelab and if they already posted an article about it. Most bloggers already did but I never got to it. Weird thing is that the common theme for most virtualization bloggers seems to be physical! Take a look at what some of these guys have [...]