To stretch or not to stretch?

In recent projects the use of stretched cluster solutions has been a recurring topic. But why is it a recurring topic, and what are the benefits and drawbacks? The primary benefit of a stretched cluster solution is to enable active-active and workload balanced data centers. The solution has the ability to migrate virtual machines between…

VCSA Migration – Syslog and Dump Collector

In preparation for an upcoming project it was time to try out the vCenter Server Migration Tool for 6.0 (vCenter Server 6 U2M). I started with reading the vSphere Migration Guide and Release Notes to find out what the prerequisites are and if any known issues are reported. vSphere Migration Guide Release Notes In the release notes…

VCSA Upgrade and VM Monitoring

With the release of vCenter Server 6.0 Update 2a and ESXi 6.0 Patch 4 I decided it was time the update the lab environment. Both releases contain a lot of fixes, some specifically for VSAN. Release notes vCenter Server 6.0 Update 2a ESXi 6.0 Patch 4 The update went perfect on the Platform Service Controllers…

vSphere 6.5 Storage – What’s new

This VMworld EU 2016 VMware announced the long awaited vSphere 6.5. This blogpost focuses on the new and enhanced storage features in vSphere 6.5. VMFS-6 A new version of the VMFS file system is introduced providing an all-round performance improvement including faster file creation, device discovery and device rescanning. Maybe the biggest change is that…

Cross vCenter vMotion – Cannot connect to host

21 November – VMware engineering has given a fix for this issue. Results are posted at the end of this post. 17 October – Currently this issue is under investigation by VMware and the SR has been referred to VMware engineering. The workaround for this issue at this time is to not use the provision…

VMCA subordinate CA caveats

vSphere 6 comes with the VMware Certificate Authority service on the VCSA. It’s possible to configure this as a subordinate CA in the existing CA infrastructure. We tested this configuration in our lab environment and ran into some issues with this configuration. As I don’t have any screenshots of the issues, I will try and…

Log Browser and ESXi RAM disk full

With the vSphere Web Client it is possible to view, search and export vCenter Server and ESXi log files using the Log Browser. When you use the log browser to retrieve the log files of an ESXi host, the log bundle is stored on the ESXi host in /tmp/scratch/downloads. The location /tmp is a symbolic…