Patent ID: 9262278
Filing Date: 2016-02-16
CPC Classification: G06F,H04L

Claim Text:
1. A method comprising: detecting a failed data volume in a sub-cluster among multiple sub-clusters within a cluster of data storage machines, marking non-failed data volumes of the affected replica-set as inactive in response to the detecting of the failed data volume in the affected replica-set, the marking of the non-failed data volumes being performed by a processor of a machine; determining a spare percentage for the sub-cluster, the spare percentage indicating a proportion of spare replica-sets among multiple replica-sets in the sub-cluster of data storage machines; copying data from the affected replica-set to the proportion of spare replica-set in response to the detecting of the failed data volume; detecting a replacement of the failed data volume with a substitute data volume in the affected replica-set; and marking the non-failed data volumes and the substitute volume as a further spare replica-set in response to the detecting of the replacement of the failed data volume.