Arbitrator

A private, disinterested person chosen by the parties in arbitration to hear evidence concerning the dispute and to make an award based on the evidence.

Nodes in a disaster tolerant architecture that act as tie-breakers in case all of the nodes in a data center go down at the same time. These nodes are full members of the Serviceguard cluster and must conform to the minimum requirements. The arbitrator must be located in a third data center to ensure that the failure of an entire data center does not bring the entire cluster down. See also quorum server.