公开(公告)号：WO2012092213A3

公开(公告)日：2012-07-05

申请号：PCT/US2011/067293

申请日：2011-12-23

Applicant: MICROSOFT CORPORATION

Inventor： SENGUPTA, Sudipta ,  DEBNATH, Biplob ,  LI, Jin ,  DESAI, Ronakkumar N. ,  OLTEAN, Paul Adrian

IPC: G06F12/00

Abstract: The subject disclosure is directed towards a data deduplication technology in which a hash index service's index maintains a hash index in a secondary storage device such as a hard drive, along with a compact index table and look-ahead cache in RAM that operate to reduce the I/O to access the secondary storage device during deduplication operations. Also described is a session cache for maintaining data during a deduplication session, and encoding of a read-only compact index table for efficiency.

公开(公告)号：EP2659378A2

公开(公告)日：2013-11-06

申请号：EP11854263.8

申请日：2011-12-23

Applicant: Microsoft Corporation

Inventor： SENGUPTA, Sudipta ,  DEBNATH, Biplob ,  LI, Jin ,  DESAI, Ronakkumar N. ,  OLTEAN, Paul Adrian

IPC: G06F12/00

CPC classification number: G06F12/0862 ,  G06F12/0866 ,  G06F12/0897 ,  G06F17/30097 ,  G06F17/30159 ,  G06F2212/1024 ,  G06F2212/463 ,  G06F2212/466

Abstract: The subject disclosure is directed towards a data deduplication technology in which a hash index service's index maintains a hash index in a secondary storage device such as a hard drive, along with a compact index table and look-ahead cache in RAM that operate to reduce the I/O to access the secondary storage device during deduplication operations. Also described is a session cache for maintaining data during a deduplication session, and encoding of a read-only compact index table for efficiency.