VMware Fault Tolerance – Best Practices, Usage Scenarios and Performance

VMware Fault Tolerance – Best Practices, Usage Scenarios and Performance
VMware Fault Tolerance (FT), introduced in vSphere 4.0 and enhanced in vSphere 4.1, allows a virtual machine to survive a server failure without any interruption in service. When FT is enabled on a virtual machine, a primary and secondary instance of the virtual machine are created, and will execute in near-lockstep on two different servers. If either server has a hardware failure, the virtual machine running on the other server will continue executing as the primary instance without interruption and without losing any network connections. In this talk, we will describe the configuration, management, and monitoring of fault-tolerant virtual machines. We will discuss best practices for ensuring the highest reliability, and describe the enhanced inter-operabilities of FT with DRS and HA in vSphere 4.1. We will also cover real-world scenarios and showcase solutions that VMware has jointly developed with partners. Finally, we will give performance results showing that enabling FT has only a small effect on application throughput.
Dean Yao, Sr. Technical Marketing Manager, Server Product Management, VMware, Inc.
Prashant Dhamdhere, Staff Engineer, VMware, Inc.
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