Installing vCenter Server 6.0 on Windows Server 2012R2
Today I am installing VMware vCenter Server 6.0 onto a Windows 2012R2 server. During the installation I will create a new Single Sign-On domain as I don’t already have an existing domain to join, as well as an embedded vPostgres…
What is the difference between High Availability and Fault Tolerance?
The table below describes the main differences between High Availability (HA) and Fault Tolerance (FT) in VMware. The key difference is that FT eliminates downtime whereas HA does not. High Availability Fault Tolerance Monitors heartbeat information provided by the…
The vSphere HA agent is not reachable from vCenter Server
Today I placed a host in a cluster into maintenance mode and the virtual machines migrated to other hosts (DRS took care of this) without any issues. However, a few minutes after it had moved the VMs I received an…
Error when editing virtual machine properties using vCenter Appliance 5.5
Since installing vCenter Server Appliance 5.5 I have encountered the following error message every time I edit the properties of a virtual machine and click OK, event if I don’t make any changes: com.vmware.sps.fault.QsConnectionException The server hasn’t been restarted since…
Creating a Resource Pool
A Resource Pool is a pool of CPU and memory resources. The resources are allocated based on the CPU and memory shares that are defined and creating one is optional. Why create a Resource Pool? Because it allows you…