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…

VSAN 6.2 UPGRADE ERROR

Update 30 March – VMware have released a KB article with steps how to solve this problem. VMware will be providing a permanent fix in due course. In the meantime they are providing a  script that will detect stranded objects, broken disk chains and objects with a CBT lock. Where possible, the script will then…

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…

ESXi 6.x CBT issue

VMware has released a KB article regarding a new issue affecting ESXi 6.0 and 6.0 Update 1. This issue affects backups utilizing change block tracking (CBT). When running incremental virtual machine backups, backup applications typically rely on the vSphere API call QueryDiskChangedAreas() to determine the changed sectors. This issue occurs due to a problem with CBT…