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Oracle® ZFS Storage Appliance Administration Guide, Release OS8.7.x

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Updated: November 2018
 
 

Cluster Terminology

The terms defined here are used throughout the document. In most cases, they are explained in greater context and detail along with the broader concepts involved. The cluster states and resource types are described in the next section. Refer back to this section for reference as needed.

  • Export: the process of making a resource inactive on a particular controller

  • Failback: the process of moving from AKCS_OWNER state to AKCS_CLUSTERED, in which all foreign resources (those assigned to the peer) are exported, then imported by the peer

  • Import: the process of making a resource active on a particular controller

  • Peer: the other appliance in a cluster

  • Rejoin: to retrieve and resynchronize the resource map from the peer

  • Resource: a physical or virtual object present, and possibly active, on one or both controllers

  • Takeover: the process of moving from AKCS_CLUSTERED or AKCS_STRIPPED state to AKCS_OWNER, in which all resources are imported