JPH03102418A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPH03102418A
JPH03102418A JP24015889A JP24015889A JPH03102418A JP H03102418 A JPH03102418 A JP H03102418A JP 24015889 A JP24015889 A JP 24015889A JP 24015889 A JP24015889 A JP 24015889A JP H03102418 A JPH03102418 A JP H03102418A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
sectors
reassigned
magnetic disk
disk device
access pattern
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP24015889A
Inventor
Tomio Kakiuchi
Original Assignee
Matsushita Electric Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To attain the reassignment of sectors for improvement of the performance of a magnetic disk device by providing a mechanism which holds the access frequency for each access pattern and a mechanism which secures the correspondence between the logical and physical sector numbers.
CONSTITUTION: When the sectors are reassigned, the logical sector numbers forming an access pattern to which the sectors must be reassigned are successively inputted to an address register 10. Then a reading number 122 is given to a RAM 14 every time an access pattern is set to an address register 13. Thus the total access frequency can be read to the access pattern which is required when the sectors are reassigned in a host. Based on the reading result, an optimum sector is reassigned via a sector. As a result, the performance of a magnetic disk device is improved.
COPYRIGHT: (C)1991,JPO&Japio
JP24015889A 1989-09-18 1989-09-18 Magnetic disk device Pending JPH03102418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24015889A JPH03102418A (en) 1989-09-18 1989-09-18 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24015889A JPH03102418A (en) 1989-09-18 1989-09-18 Magnetic disk device

Publications (1)

Publication Number Publication Date
JPH03102418A true true JPH03102418A (en) 1991-04-26

Family

ID=17055358

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24015889A Pending JPH03102418A (en) 1989-09-18 1989-09-18 Magnetic disk device

Country Status (1)

Country Link
JP (1) JPH03102418A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6446161B1 (en) 1996-04-08 2002-09-03 Hitachi, Ltd. Apparatus and method for reallocating logical to physical disk devices using a storage controller with access frequency and sequential access ratio calculations and display

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6446161B1 (en) 1996-04-08 2002-09-03 Hitachi, Ltd. Apparatus and method for reallocating logical to physical disk devices using a storage controller with access frequency and sequential access ratio calculations and display
US6708252B2 (en) 1996-04-08 2004-03-16 Hitachi, Ltd. Apparatus and method for reallocating logical to physical disk devices using a storage controller, with access frequency and sequential access ratio calculations and display
US6915382B2 (en) 1996-04-08 2005-07-05 Hitachi, Ltd. Apparatus and method for reallocating logical to physical disk devices using a storage controller, with access frequency and sequential access ratio calculations and display
US7069383B2 (en) 1996-04-08 2006-06-27 Hitachi, Ltd. Apparatus and method for reallocating logical to physical disk devices using a storage controller, with access frequency and sequential access ratio calculations and display
US7577815B2 (en) 1996-04-08 2009-08-18 Hitachi, Ltd. Apparatus and method for reallocating logical to physical disk devices using a storage controller, with access frequency and sequential access ratio calculations and display
US8032733B2 (en) 1996-04-08 2011-10-04 Hitachi, Ltd. Apparatus and method for reallocating logical to physical disk devices using a storage controller with access frequency and sequential access ratio calculations and display
US8898383B2 (en) 1996-04-08 2014-11-25 Hitachi, Ltd. Apparatus for reallocating logical to physical disk devices using a storage controller and method of the same

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