VMware High Availability and Fault Tolerance

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  • VMware vSphere

    VMware vSphere is brand name for VMware's suite of products that use the ESX/ESXi hypervisor. Before 2009. VMware vSphere was known as VMware Infrastructure. 

  • VMware vSphere App HA

    VMware vSphere App HA is virtual appliance introduced with vSphere 5.5. It works with vSphere HA (high availability) host monitoring and virtual machine monitoring to improve application uptime. 

  • VMware vCenter Chargeback Manager

    VMware vCenter Chargeback Manager is a tool that calculates the costs of virtual resources and provides chargeback accountability. 

  • VMware vCenter Server Heartbeat (vCSHB)

    VMware vCenter Server Heartbeat (vCSHB) is VMware's OEM version of NeverFail, which is designed to ensure the high availability and disaster recovery of vCenter Server whether on a LAN or a Wireless Wide Area Network. 

  • affinity rules

    Affinity rules are settings that establish a relationship between two or more VMware virtual machines (VMs) and hosts. 

  • VMware vLockstep

    VMware vLockstep is the technology supporting VMware's Fault Tolerance (FT) high-availability software feature. 

  • VMware HA (High Availability)

    VMware HA (High Availability) is a utility that eliminates the need for dedicated standby hardware and software in a virtualized environment ... (Continued) 

About VMware High Availability and Fault Tolerance

VMware High Availability, or VMware HA, is VMware's first enterprise availability product. It moves your virtual machines to another host server if the first host goes down, giving you greater uptime. VMware Fault Tolerance, or VMware FT, is VMware's second availability product and is packaged with vSphere 4.0.

Here, you'll find tips by industry experts that explain, for example, how to configure VMware HA failover levels while accounting for key configuration considerations, and how to determine which workloads don't require HA. We also offer tips that explain how to combine HA with Windows clustering and other measures to vary availability levels among your servers depending on their importance.

Even if your business doesn't have VMware HA, one of our tips explains how to achieve a certain amount of redundancy without VMware HA or VMotion.