Patent ID: 9189421
Filing Date: 2015-11-17
Classification: G06F

Abstract:
1. A data storage system, comprising: a first data storage layer, the first data storage layer comprising data that can be accessed at a high data rate with a low latency; a second data storage layer, said second data storage layer comprising de-duplicated data evicted from the first data storage layer, wherein the second storage layer has a higher retrieval latency than the first data storage layer; a barrier storage area, the barrier storage area comprising a subset of the de-duplicated data that is stored for a settlement period, wherein the settlement period represents a time after which the de-duplicated data is made accessible; and a third data storage layer coupled to the barrier storage area and configured to receive the subset of the de-duplicated data, said third data storage layer having a higher retrieval latency than said second data storage layer; wherein a first data item is stored in said first, second, or third data storage layer based upon frequency of use of said first data item.