JPS6449167A - Track emulation system for magnetic disk device - Google Patents

Track emulation system for magnetic disk device

Info

Publication number
JPS6449167A
JPS6449167A JP20544087A JP20544087A JPS6449167A JP S6449167 A JPS6449167 A JP S6449167A JP 20544087 A JP20544087 A JP 20544087A JP 20544087 A JP20544087 A JP 20544087A JP S6449167 A JPS6449167 A JP S6449167A
Authority
JP
Japan
Prior art keywords
track
capacity
data
added
magnetic disk
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.)
Granted
Application number
JP20544087A
Other languages
Japanese (ja)
Other versions
JPH0799608B2 (en
Inventor
Hideo Matsuura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu 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
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP20544087A priority Critical patent/JPH0799608B2/en
Publication of JPS6449167A publication Critical patent/JPS6449167A/en
Publication of JPH0799608B2 publication Critical patent/JPH0799608B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To obtain high reliability by means of a simple constitution without adding a specific circuit by interchanging the capacity of tracks on the basis of a segment number in a counting part to which an error correcting code (ECC) is added. CONSTITUTION:A data transfer control means 16 for controlling the transfer of writing or reading data between a master device 10 and a storage mechanism 14 in a large capacity magnetic disk device 12 on the basis of an old machine track format shown in a drawing is connected to a control adaptor in the device 12. When the means 16 transfers data in the track format, a detecting means 18 detects the value of a segment number. Every time when the means 16 transfers data in a key part and a data part, the length of a gap G2 and the length of an object to be transferred are added to an adding means 20. At the time of deciding that the added value reached to the capacity of a track, a track capacity deciding means 22 informs the result to the device 10.
JP20544087A 1987-08-19 1987-08-19 Track emulation method for magnetic disk unit Expired - Lifetime JPH0799608B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20544087A JPH0799608B2 (en) 1987-08-19 1987-08-19 Track emulation method for magnetic disk unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20544087A JPH0799608B2 (en) 1987-08-19 1987-08-19 Track emulation method for magnetic disk unit

Publications (2)

Publication Number Publication Date
JPS6449167A true JPS6449167A (en) 1989-02-23
JPH0799608B2 JPH0799608B2 (en) 1995-10-25

Family

ID=16506910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20544087A Expired - Lifetime JPH0799608B2 (en) 1987-08-19 1987-08-19 Track emulation method for magnetic disk unit

Country Status (1)

Country Link
JP (1) JPH0799608B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04205970A (en) * 1990-11-30 1992-07-28 Fujitsu Ltd Disk track emulation method
JPH08180600A (en) * 1994-12-27 1996-07-12 Nec Corp Magnetic disk unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04205970A (en) * 1990-11-30 1992-07-28 Fujitsu Ltd Disk track emulation method
US5590311A (en) * 1990-11-30 1996-12-31 Fujitsu Limited System and method for emulating disk tracks to maintain data format compatibility
JPH08180600A (en) * 1994-12-27 1996-07-12 Nec Corp Magnetic disk unit

Also Published As

Publication number Publication date
JPH0799608B2 (en) 1995-10-25

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