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The Complete VMware vSphere Guide
book

The Complete VMware vSphere Guide

by Mike Brown, Hersey Cartwright, Martin Gavanda, Andrea Mauro, Karel Novak, Paolo Valsecchi
November 2019
Beginner content levelBeginner
768 pages
32h 29m
English
Packt Publishing
Content preview from The Complete VMware vSphere Guide

VMware vSphere FT

VMware vSphere FT is a way to improve the availability level for critical VMs, with a zero-downtime technology.

vSphere FT works by continuously replicating the state of the VM between two different ESXi hosts. As a result there are two identical copies of a VM—the primary VM and the secondary VM (sometimes called shadow VM). Each VM has its own set of configuration files, VMX and VMDK files, which vSphere FT automatically keeps synchronized.

When the physical ESXi server where the primary VM is running fails, the secondary VM (shadow VM) automatically takes over and resumes normal operations.

VMware vSphere FT also has some limits—for each VM, it supports a maximum of 4 vCPUs and 64 GB RAM. For each host, it supports a ...

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Publisher Resources

ISBN: 9781838985752Supplemental Content