Enabling and disabling Fault Tolerance on a virtual machine
In addition to VMware High Availability (HA) clustering, VMware also provides the ability to enable Fault Tolerance (FT) to protect a running virtual machine. FT creates a secondary virtual machine on a second host in the cluster and executes all of the same instructions on both the VMs. In the event of a host failure on the server hosting the primary VM, the secondary VM will assume the role of the primary with no downtime. There are no breaks in the network connectivity or application uptime.
In vSphere 5.5, FT has a significant list of requirements, including at least two ESXi hosts with FT compatible processors, shared datastores, and networking hosting the VM. In addition, your ESXi ...
Get PowerCLI Cookbook now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
