Switching between fault response models in a storage system

A storage system comprising a computer processor and a computer memory operatively coupled to the computer processor, the computer memory storing computer program instructions that, when executed by the computer processor, cause the storage system to carry out the steps of:

• determining, among one or more of the plurality of storage systems configured for synchronous replication of a dataset, a change in availability of a mediation service, wherein one or more of the plurality of storage systems are configured to request mediation from the mediation service in response to a fault;
• and
• responsive to determining the change in availability of the mediation service, communicating, among the plurality of storage systems, an alternative to the mediation service.

An apparatus comprising a computer processor and a computer memory operatively coupled to the computer processor, the computer memory storing computer program instructions that, when executed by the computer processor, cause the apparatus to carry out the steps of:

• determining, among one or more of the plurality of storage systems configured for synchronous replication of a dataset, a change in availability of a mediation service, wherein one or more of the plurality of storage systems are configured to request mediation from the mediation service in response to a fault;
• and
• responsive to determining the change in availability of the mediation service, communicating, among the plurality of storage systems, an alternative to the mediation service.