Which component helps coordinate automatic switchover decisions in IP MetroCluster deployments?

The MetroCluster Mediator is the specific software service that runs on the Tiebreaker server for IP MetroCluster configurations. Its function is to act as a quorum witness. During a potential disaster scenario where inter-site links are down, the Mediator communicates with the surviving cluster to verify the status of the other site. By providing this third-party perspective, it helps the surviving cluster make a safe and coordinated decision to perform an automatic unplanned switchover (AUSO), thereby preventing a split-brain condition where both sites might attempt to become active simultaneously.

A. The ONTAP Scheduler is a built-in ONTAP process used for running scheduled tasks like creating snapshots, not for disaster recovery decisions.

C. System Manager is a graphical user interface (GUI) used for managing ONTAP clusters; it does not automate failover decisions.

D. SnapMirror is the underlying replication technology, but it is the Mediator, not a "SnapMirror Manager," that coordinates the switchover.

1. NetApp, Inc. (2023). MetroCluster Tiebreaker Installation and Configuration Guide for ONTAP 9.13.1. NetApp Documentation. Section: "Tiebreaker software overview", Page 8. "The NetApp MetroCluster Mediator service provides a mediation or quorum service for NetApp MetroCluster IP configurations."

2. NetApp, Inc. (2023). MetroCluster Management and Disaster Recovery Guide for ONTAP 9.13.1. NetApp Documentation. Section: "Overview of automatic unplanned switchover", Page 48. "The Mediator provides a quorum vote when the two clusters cannot communicate."