公开(公告)号：EP0205965A2

公开(公告)日：1986-12-30

申请号：EP86107185

申请日：1986-05-27

Applicant: IBM

Inventor： ISKIYAN JAMES LINCOLN ,  LEGVOLD VERNON JOHN ,  LEUNG PETER L H ,  MARTIN GUY EUGENE

IPC: G06F7/02 ,  G06F12/08

CPC classification number: G06F12/0804 ,  G06F12/0866 ,  G06F2212/312

Abstract: Data is accessed by record identification in a peripheral sub-system (101) having cache (102,104) and back store (26, 34) to transfer the most recently updated version of one or more records stored in the subsystem where one version of a record may be in a back store and a modified version of the record may be in cache storage, by a method and apparatus including table lookup means for indicating for each record of each track of each device in said back store whether record data stored in cache is modified with respect to a version of the same record stored in back store; and means responsive to the indicating means for transferring the modified or backing store version of a record in accordance with predetermined criteria.

公开(公告)号：DE2841047A1

公开(公告)日：1979-04-12

申请号：DE2841047

申请日：1978-09-21

Applicant: IBM

Inventor： HARTUNG MICHAEL HOWARD ,  ISKIYAN JAMES LINCOLN ,  ROBERTS JAMES GARFIELD ,  TENNISON ROBERT DOUGLAS

IPC: G06F3/06 ,  G06F11/08 ,  G06F11/30 ,  G06F13/00 ,  G08C25/02 ,  G11B20/18 ,  G11B5/86 ,  G06F3/04 ,  G06F11/00