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 […]
storage
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 […]
Changing SATP Claimrules for specific storage configurations
At my current customer I was upgrading their vSphere 4.1 environment to vSphere 5.5. When installing and configuring the first ESXi 5.5 host, I noticed a difference in the Path Selection Policy (PSP) between the ESX 4.1 hosts and the ESXi 5.5 host. Each host is connected to two Hitachi storage arrays, each a different […]
My completely ridiculous VSAN test
You find yourself sitting at your desk on a Saturday morning waiting for the cloning of a VM to finish. It seems to take forever and I just wished I could run VSAN in my homelab to get some more speed out of my kit. I have tried to run VSAN on my home mode […]
Add Fusion IO driver to VMware Auto Deploy
A customer of mine, who was already running a vSphere environment on Cisco UCS blades, asked to expand his environment with a number of ESXi hosts that could run a VMware View environment. To be able to run as much View desktops on each host as possible, we offered them Cisco UCS Blades equipped with […]