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Provide high availability across your entire virtualized IT environment without the cost or complexity of traditional clustering solutions. vSphere HA provides cost-effective high availability for any application running in a virtual machine, regardless of its operating system or underlying hardware configuration.

Features

The following is a list of the key features of vSphere HA.

 

Key Features

  • Automatic detection of server failures. HA automates the monitoring of physical server availability.  HA detects physical server failures and initiates the new virtual machine restart on a different physical server in the resource pool without human intervention.
  • Automatic detection of operating system failures. HA detects operating system failures within virtual machines by monitoring heartbeat information. If a failure is detected, the affected virtual machine is automatically restarted on the server.
  • Smart failover of virtual machines to servers with best available resources (requires vSphere DRS). Automate the optimal placement of virtual machines restarted after server failure.
  • Scalable high availability across multiple physical servers. Supports up to 32 nodes in a cluster for high application availability. VMware has the same limits for virtual machines per host, hosts per cluster, and virtual machines per cluster as vSphere.
  • Resource checks. Ensure that capacity is always available in order to restart all virtual machines affected by server failure. HA continuously and intelligently monitors capacity utilization and reserves spare capacity to be able to restart virtual machines.
  • Proactive monitoring and health checks. HA helps VMware vSphere users identify abnormal configuration settings detected within HA clusters. The VMware vSphere client interface reports relevant health status and potential error conditions and suggested remediation steps. The Cluster Operational Status window displays information about the current HA operational status, including the specific status and errors for each host in the HA cluster.
  • Enhanced isolation address response. Ensures reliability in confirming network failure by allowing multiple addresses to be pinged before declaring that a node is isolated in the cluster.
  • Simplified setup. The new HA architecture enables faster setup or modification to new or existing HA clusters.
  • Better resource guarantees and scale.The new HA architecture also delivers even more reliability, scale, and resource guarantees than in any previous release.