Tag Archives: HA

vSphere Metro Storage Cluster (vMSC) and partially connected datastores?

By | May 7, 2016

vSphere Metro Storage Cluster (vMSC) is a certified (you should always check/verify compatibility on VMware Storage Compatibility Guide) configuration for stretched storage (synchronized replication) cluster architectures. As I already described, there are possible two vMSC configurations based on how the hosts are connected to the storage arrays. The below figure presents uniform host access configuration (the most often… Read More »

How to calculate VMware HA Admission Control for unbalanced vSphere cluster?

By | September 19, 2015

Yesterday I received an email with the following question: how to calculate VMware HA Admission Control for unbalanced vSphere cluster? Just for a quick reminder, Admission Control is used to ensure that sufficient resources are available in a cluster to provide failover protection and to ensure that virtual machine resource reservations are respected. I already described some months… Read More »