Patent · US Active

Tape drive memory deduplication

US10372681B2 · kind B2 · utility

1Cited by

9References

25Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Ole Asmussen · Henstedt-Ulzburg, DE
Robert Beiderbeck · Wassenberg, DE
Erik Rueger · Mainz, DE
Markus Schäfer · Horterhof, DE

Key dates

Filing date	Sep 12, 2017
Grant date	Aug 6, 2019
Priority date	—
Expiry date	Jan 26, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH03M7/3095
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A method and system for improving tape drive memory storage is provided. The method includes receiving, by a storage tape drive, a data stream for storage. The data stream is passed through a non-volatile memory device (NVS2) of the storage tape drive. The data stream is divided into adjacent variable length data chunks and a chunk list file including similarity identifiers for each of the adjacent variable length data chunks is generated and stored within a (non-volatile memory device) NVS1. Duplicate data including duplicated data with respect to a group of data chunks of the adjacent variable length data chunks is identified and deleted from the NVS2 of the storage tape drive such that the group of data chunks remains within NVS2. The group of data chunks is written to a data storage tape cartridge. Pointers identifying each data chunk and an associated storage position are generated and stored.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.