Our vSphere version combined with EMC VNX MCX OE version advices Round Robin as path policy. For RDMs used by a Microsoft Cluster however, Most-Recently-Used is the adviced policy. If a Microsoft Cluster has the incorrect path policy, there is a hughe latency on the RDM. We have noticed that reboot of the ESXi host or […]
PowerShell
Check the health of your storage paths
For you vSphere environment you always want to make sure that all paths to your storage system are connected. That is why in our vSphere environment we run a daily morning check that tells us if there are any death paths between hosts and storage. Before upgrades of our SAN or flare code upgrades of our […]
AutoDeploy Failed to convert ItemList
When working with VMware vSphere AutoDeploy and creating or editing rules I sometimes get the following error when running a Get-DeployRule: “Failed to convert ItemList to VI Object: System.NullReferenceException: Object reference not set to an instance of an object” (See screenshot). Often I also have one or more rules not working correctly then. Turns out […]
Auto Deploy GUI – a new VMware Labs fling
On the VMware Labs pages you’ll find a number of great Lab projects, so called “Flings”. These are unsupported projects by VMware employees you can download and use. One of the latest VMware Lab Flings is the “Auto Deploy GUI” created by Massimiliano Daneri which makes auto deploy of your ESXi hosts a breeze. As […]
VMware vSphere Health Check
At the Dutch VMUG event 2011 I gave a presentation on how to check your VMware environment to make sure it is healthy. When creating the presentation I had a lot of doubts because I was afraid everyone would think these points were very obvious. But on the other hand, when visiting customers and doing […]