Patent ID: 9208820
Filing Date: 2015-12-08
Classification: G06F,G11B

Abstract:
1. A method of data deduplication for data storage tapes, comprising: determining a read throughput of a deduplicated set of individual files on a single data storage tape; determining a placement of deduplicated file data on the single data storage tape based on sorting non-duplicate segments of different files around shared segments for reducing an average number of per-file gaps on the single data storage tape, wherein the sorting comprises ordering forward-related non-duplicate segments in a same file as following shared segments from largest segment to smallest segment, and ordering backward-related non-duplicate segments in the same file as previous shared segments from smallest to largest; and writing the deduplicated file data on the single data storage tape based on said placement to increase the read throughput for the deduplicated set of individual files and to reduce the average number of per-file gaps on the single data storage tape by re-duplicating deduplicated data for meeting optimization of individual file accesses.