About High Availability
Process restartability provides the high availability functionality in Cisco MDS 9000 Series switches. This process ensures that process-level failures do not cause system-level failures. It also restarts the failed processes automatically. This process is able to restore its state prior to the failure and continues executing from the failure point going forward.
An HA switchover has the following characteristics:
- It is stateful (nondisruptive) because control traffic is not impacted.
- It does not disrupt data traffic because the switching modules are not impacted.
- Switching modules are not reset.
Note |
Switchover is not allowed if auto-copy is in progress. |