公开(公告)号：BR9103523A

公开(公告)日：1992-05-12

申请号：BR9103523

申请日：1991-08-16

Applicant: IBM

Inventor： FRIEDL THEODORE J ,  GREGG LEON E ,  LOEN LARRY W ,  ROLFE RANDY K

IPC: G06F12/00 ,  G06F11/08 ,  G11B20/18 ,  G11C29/00 ,  G11B20/10 ,  G11B11/00

Abstract: A data storage medium having the ability to recover from media errors includes a directory (36) located at any desired region of a data storage area with redundant directory pointers at reserved locations. A unique file token is included in the directory entry (40) for each data file and is also included in each extent list (44) where the locations of parts of a fragmented data file are stored. Multiple extent lists are chained in two directions to facilitate reconstruction of the chain if part of the pointer information is lost.

公开(公告)号：CA2045948A1

公开(公告)日：1992-02-21

申请号：CA2045948

申请日：1991-06-28

Applicant: IBM

Inventor： FRIEDL THEODORE J ,  GREGG LEON E ,  LOEN LARRY W ,  ROLFE RANDY K

IPC: G06F12/00 ,  G06F11/08 ,  G11B20/18 ,  G11C29/00 ,  G11B20/12

Abstract: A data storage medium having the ability to recover from media errors includes a directory located at any desired region of a data storage area with redundant directory pointers at reserved locations. A unique file token is included in the directory entry for each data file and is also included in each extent list where the locations of parts of a fragmented data file are stored. Multiple extent lists are chained in two directions to facilitate reconstruction of the chain if part of the pointer information is lost.