High Availability Operation

everRun software provides two user-defined availability levels for VMs: High Availability (HA) and Fault Tolerant (FT).

In HA operation, everRun software automatically detects, isolates, and handles most hardware faults, thereby keeping your applications running. With HA remote-support technology, the everRun software notifies the Stratus support center of various issues, indicating the type of fault and its exact location. This combination of automatic fault detection, isolation, and remote-support technologies ensures speedy access to expert support technicians and rapid problem resolution.

You select a VM’s availability level when you create or import the VM by using the everRun Availability Console.

When enabled, HA operation offers basic failover and recovery, with some faults requiring an (automatic) VM reboot for recovery, and return to HA operation:

• Eliminates downtime for many, but not all, CPU, memory, I/O, or other physical machine (PM) failures.
• Handles failures without IT intervention.
• Provides continuous, active validation of all components.
• Assures redundancy and recovery at all times.

HA is suitable for applications that can tolerate occasional interruptions of a few minutes.

Related Topics

The Virtual Machines Page

Using the everRun Availability Console