Chapter 3. Troubleshooting Clusters

Today's virtual environment is not considered complete until it remains online 24/7. High availability is supported by almost all kinds of operating systems, regardless of its type. VMware also supports high availability and the Distributed Resource Scheduler (DRS) to allow you to have a fully automated and highly available infrastructure. DRS manages the workload and load balances them within the vSphere cluster. It is based on advanced algorithms to automate the migration of virtual machines using vMotion from one host to another when the resources are not available to satisfy the virtual machine requirements on a particular host. The migrations are done entirely without any downtime.

To avoid downtime and to monitor the performance of your infrastructure, you must know how to troubleshoot DRS and high availability issues in VMware infrastructure. In this chapter, you will also see how to troubleshoot vMotion and storage vMotion issues...