CLUSTER FAMILIES FOR CLUSTER SELECTION AND COOPERATIVE REPLICATION

摘要

Cluster families for cluster selection and cooperative replication are created. The clusters are grouped into family members of a cluster family base on their relationships and roles. Members of the cluster family determine which family member is in the best position to obtain replicated information and become cumulatively consistent within their cluster family. Once the cluster family becomes cumulatively consistent, the data is shared within the cluster family so that all copies within the cluster family are consistent. Each family member in the family replicates 1/Nth volumes and N represents a total number of cluster family members in the family.

主权项

1. A method for cooperative replication of multiple clusters, the method comprising:
arranging at least one subset of the multiple clusters into family members of a cluster family; negotiating between cluster family members to determine which cluster family member is in the best position to obtain at least one outside data object from at least one cluster outside of the cluster family; selecting one family member of the cluster family to obtain the outside data object; and sharing the outside data objects among the cluster family so that each cluster within the cluster family is consistent with respect to outside data objects, wherein each family member in the cluster family replicates 1/Nth volumes and N represents a total number of cluster family members in the cluster family.