Patent ID: 9589002
Date: 2017-03-07
CPC Classifications: G06F,Y02D

Claim:
1. A system comprising: one or more nodes, each of which has a processor and is coupled to a storage system having a plurality of storage media on which a plurality of first logical storage units as a first tier and a plurality of second logical storage units as a second tier are created; the processor being configured to: store one or more copies of first content objects across the plurality of first logical storage units, the number of copies of the first content objects being defined based on a data protection level of the first content objects; and if a used capacity of the plurality of first logical units exceeds a threshold and the number of copies of the first content objects, defined by the data protection level of the first content objects, is greater than one, move all but one of the plurality of first content objects to the plurality of second logical storage units, and maintain the one of the first content objects in one of the plurality of first logical storage units.