公开(公告)号：US20170123990A1

公开(公告)日：2017-05-04

申请号：US15001994

申请日：2016-01-20

Applicant: SK hynix Inc.

Inventor： Seok Hoon JUNG ,  Ji Hoon LEE

IPC: G06F12/08

CPC classification number: G06F12/0864 ,  G06F12/0895 ,  G06F2212/6042

Abstract: A method for operating a data storage device includes: dividing a cache into a plurality of cache areas; grouping a plurality of logical addresses into a plurality of logical address groups; allocating indexes to the respective logical address groups; and matching a read-requested first logical address set, a first cache area where data corresponding to the first logical address set are cached and an empty size of the first cache area, to an index corresponding to a logical address group to which the first logical address set belongs.