Patent ID: 9529545
Filing Date: 2016-12-27
CPC Classification: G06F

Claim Text:
1. A method for use in managing data deduplication in storage systems based on storage space characteristics, the method comprising: receiving a request to deduplicate a data object; identifying a candidate data object for deduplicating the data object; evaluating characteristics of storage tiers on which the data object and the candidate data object reside, wherein the data object resides on a first storage tier and the candidate data object resides on a second storage tier, wherein a data storage system includes the first storage tier and the second storage tier configured such that performance characteristics associated with the first storage tier are different from performance characteristics associated with the second storage tier; and based on the evaluating, selecting a master deduplicated copy from a group consisting of the data object and the candidate data object, wherein the data object is selected as the master deduplicated copy upon determining that performance characteristics associated with the first storage tier are higher than performance characteristics associated with the second storage tier, wherein the candidate data object is selected as the master deduplicated copy upon determining that performance characteristics associated with the second storage tier are higher than performance characteristics associated with the first storage tier; and based on the selecting, applying a deduplicating technique to the data object and the candidate data object, wherein the data object is deduplicated to the candidate data object by updating mapping information of the data object to point to the candidate data object upon selection of the candidate data object as the master deduplicated copy, wherein the candidate data object is deduplicated to the data object by updating mapping information of the candidate data object to point to the data object upon selection of the data object as the master deduplicated copy.