公开(公告)号：CA2045948C

公开(公告)日：1998-11-17

申请号：CA2045948

申请日：1991-06-28

Applicant: IBM

Inventor： FRIEDL THEODORE JOHN ,  GREGG LEON EDWARD ,  LOEN LARRY WAYNE ,  ROLFE RANDY KEITH

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.

公开(公告)号：DE69127735T2

公开(公告)日：1998-03-26

申请号：DE69127735

申请日：1991-07-11

Applicant: IBM

Inventor： FRIEDL THEODORE JOHN ,  GREGG LEON EDWARD ,  LOEN LARRY WAYNE ,  ROLFE RANDY KEITH

IPC: G06F12/00 ,  G06F11/08 ,  G11B20/18 ,  G11C29/00 ,  G06F17/30

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：DE69127735D1

公开(公告)日：1997-10-30

申请号：DE69127735

申请日：1991-07-11

Applicant: IBM

Inventor： FRIEDL THEODORE JOHN ,  GREGG LEON EDWARD ,  LOEN LARRY WAYNE ,  ROLFE RANDY KEITH

IPC: G06F12/00 ,  G06F11/08 ,  G11B20/18 ,  G11C29/00 ,  G06F17/30

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.