公开(公告)号：CA2050161A1

公开(公告)日：1992-05-15

申请号：CA2050161

申请日：1991-08-28

Applicant: IBM

Inventor： BERRY ROBERT L ,  CENTERWALL BRANDT C ,  LUNING STEPHEN G ,  WADE FORREST L

IPC: G11B5/09 ,  G11B5/48 ,  G11B5/55 ,  G11B19/04 ,  G11B20/18 ,  G11B21/08

Abstract: A system and method for detecting which head in a multiple head storage device contains errors and may be misaligned, and correcting for that misalignment so that the data can be recovered. These features allow for data to be recovered from the multiple head storage device in an efficient manner, without corrupting data read from those heads of the multiple head storage device which were not misaligned.

公开(公告)号：CA2050161C

公开(公告)日：1995-10-10

申请号：CA2050161

申请日：1991-08-28

Applicant: IBM

Inventor： BERRY ROBERT L ,  CENTERWALL BRANDT C ,  LUNING STEPHEN G ,  WADE FORREST L

IPC: G11B5/09 ,  G11B5/48 ,  G11B5/55 ,  G11B19/04 ,  G11B20/18 ,  G11B21/08 ,  G11B5/588 ,  G11B21/10

Abstract: A system and method for detecting which head in a multiple head storage device contains errors and may be misaligned, and correcting for that misalignment so that the data can be recovered. These features allow for data to be recovered from the multiple head storage device in an efficient manner, without corrupting data read from those heads of the multiple head storage device which were not misaligned.

公开(公告)号：CA2072728A1

公开(公告)日：1993-05-21

申请号：CA2072728

申请日：1992-06-29

Applicant: IBM

Inventor： HARTUNG MICHAEL H ,  SINGH SHANKER ,  WADE FORREST L

IPC: G06F12/08 ,  G06F1/26 ,  G06F11/20 ,  G06F12/16 ,  G11C5/14

Abstract: TU9-91-018 DUAL DATA BUFFERING IN SEPARATELY POWERED MEMORY MODULES Combination of split memory modules, each module partitioned into a first section and a second section. Each module has its own power source so that the failure of a single power source will not affect the other modules. A particular block of data is not stored in both sections of a single module. Each block of data is stored in the first section of one module and the second section of a different module. Failure of a power supply will not cause a loss in data since the same data is stored in a section of a module not powered by the same power supply. The failure of all power supplies will not result in the loss of any data if either the first or second section of the memory modules is nonvolatile, i.e., backed up, usually by battery sources.

公开(公告)号：CA1014272A

公开(公告)日：1977-07-19

申请号：CA201634

申请日：1974-06-04

Applicant: IBM

Inventor： BODEN ROBERT C ,  WADE FORREST L

IPC: G06F12/16 ,  G06F11/10 ,  G06F11/22 ,  G11C19/00