KR960042314A - How to Optimize Slice Levels on Hard Disk Drives - Google Patents

How to Optimize Slice Levels on Hard Disk Drives Download PDF

Info

Publication number
KR960042314A
KR960042314A KR1019950013071A KR19950013071A KR960042314A KR 960042314 A KR960042314 A KR 960042314A KR 1019950013071 A KR1019950013071 A KR 1019950013071A KR 19950013071 A KR19950013071 A KR 19950013071A KR 960042314 A KR960042314 A KR 960042314A
Authority
KR
South Korea
Prior art keywords
zone
slice level
head
maximum
increased
Prior art date
Application number
KR1019950013071A
Other languages
Korean (ko)
Other versions
KR100327263B1 (en
Inventor
김재준
Original Assignee
김광호
삼성전자 주식회사
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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950013071A priority Critical patent/KR100327263B1/en
Publication of KR960042314A publication Critical patent/KR960042314A/en
Application granted granted Critical
Publication of KR100327263B1 publication Critical patent/KR100327263B1/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/26—Functional testing
    • G06F11/273—Tester hardware, i.e. output processing circuits
    • G06F11/2733—Test interface between tester and unit under test
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
    • G06F3/0614—Improving the reliability of storage systems
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
    • G06F3/0638—Organizing or formatting or addressing of data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
    • G06F3/0601—Interfaces specially adapted for storage systems
    • G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
    • G06F3/0671—In-line storage system
    • G06F3/0673—Single storage device
    • G06F3/0674—Disk device
    • G06F3/0676—Magnetic disk device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2211/00—Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
    • G06F2211/10—Indexing scheme relating to G06F11/10
    • G06F2211/1002—Indexing scheme relating to G06F11/1076
    • G06F2211/109—Sector level checksum or ECC, i.e. sector or stripe level checksum or ECC in addition to the RAID parity calculation

Abstract

본 발명은 하드 디스크 드라이브에서의 슬라이드 레벨 최적화 방법에 관한 것이다.The present invention relates to a slide level optimization method in a hard disk drive.

본 발명은 (a) 슬라이스 레벨을 순서적으로 설정하는 한편 헤드 및 존 카운트를 설정하는 단계; (b) 메인티넌스 실린더의 특정 위치를 초기화 하는 단계; (c) (a)단계에서의 변수를 최소치로 설정하여 자체 테스트를 실행하는 단계; (d) 헤드 및 존에 대한 판독 동작을 수행하여 에러를 검출하는 단계; (e) 검출된 에러를 메인티넌스 실린더에 기록하는 단계; (f) 증가된 존이 최대 존보다 큰지의 여부를 판단하는 단계; (g) 증가된 존이 최대 존을 초과하면 헤드를 하나 증가하여 그 헤드를 마스크하는 단계; (h) 증가된 헤드가 최대 헤드이면 메인티넌스 실린더의 위치 및 슬라이스 레벨을 하나 증가시키는 단계; (i) 증가된 슬라이스 레벨이 최대 슬라이스 레벨보다 큰지의 여부를 판별하는 단계; 및 (j) 증가된 슬라이스 레벨이 최대 슬라이스 레벨을 초과하면 메인티넌스 실린더의 에러를 비교하여 최소의 슬라이스 레벨을 선정하는 단계를 포함한다.The present invention comprises the steps of (a) setting slice levels in sequence while setting head and zone counts; (b) initializing a specific position of the maintenance cylinder; (c) executing the self test by setting the variable in step (a) to a minimum; (d) performing a read operation on the head and the zone to detect an error; (e) writing the detected error to a maintenance cylinder; (f) determining whether the increased zone is greater than the maximum zone; (g) increasing the head by one if the increased zone exceeds the maximum zone to mask the head; (h) increasing the location and slice level of the maintenance cylinder by one if the increased head is a maximum head; (i) determining whether the increased slice level is greater than the maximum slice level; And (j) if the increased slice level exceeds the maximum slice level, comparing the error of the maintenance cylinder to select the minimum slice level.

이와 같은 본 발명은 각각 다른 값의 슬라이스 레벨을 헤드별 및 존별로 최소의 에러율을 갖는 레벨로 결정하는 드라이브마다 갖는 편차를 최소화시킴으로써 판독/기록 채널을 최적화할 수 있으므로 하드 디스크 드라이브의 신뢰성을 한층 향상시킬 수 있다.As described above, the present invention can further optimize read / write channels by minimizing the deviation of each drive that determines slice levels having different values as heads and zones with minimum error rates. You can.

Description

하드 디스크 드라이브에서의 슬라이스 레벨 최적화 방법How to Optimize Slice Levels on Hard Disk Drives

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 따른 하드 디스크 드라이브에서의 슬라이스 레벨 최적화 방법에 의해 슬라이스 레벨을 최적화하는 과정을 나타내 보인 플로우 챠트.2 is a flowchart illustrating a process of optimizing slice levels by a slice level optimization method in a hard disk drive according to the present invention.

Claims (3)

(a) 각각 다른 레벨을 갖는 슬라이스 레벨을 순서적으로 설정하는 한편 헤드 및 존 카운트를 설정하여 시스템을 초기화시키는 단계; (b) 자체 테스트를 위하여 설정된 메인티넌스 실린더의 특정 위치를 초기화하는 단계; (c) 상기 (a)단계에 의해 설정된 변수 중 최소치로 설정하여 자체 테스트를 실행하는 단계; (d) 상기 (c)단계에서 설정된 슬라이스 레벨에 의해 헤드 및 존에 대한 판독 동작을 수행하여 에러를 검출하는 단계; (e) 상기 검출된 에러를 유형별로 메인티넌스 실린더의 소정 위치에 기록하는 단계; (f) 존을 하나 증가하고 증가된 존이 최대 존보다 큰지의 여부를 판단하는 단계; (g) 상기 (f)단계에서 증가된 존이 최대 존 이하이면 상기 (d)단계로 회귀하여 에러를 검출하고, 증가된 존이 최대 존을 초과하면 헤드를 하나 증가하여 그 헤드를 마스크하는 단계; (h) 증가된 헤드가 최대 헤드인지를 판별하여, 최대 헤드가 아니면 상기 (c)단계로 회귀하여 동작을 재개하고, 최대 헤드이면 메인티넌스 실린더의 위치 및 슬라이스 레벨을 하나 증가시키는 단계; (i)상기 증가된 슬라이스 레벨이 설정된 최대 슬라이스 레벨보다 큰지의 여부를 판별하는 단계; 및 (j) 상기 (i)단계에서 증가된 슬라이스 레벨이 설정된 최대 슬라이스 레벨 이하이면 상기 (c)단계로 회귀하여 동작을 재개하고, 증가된 슬라이스 레벨이 설정된 최대 슬라이스 레벨을 초과하면 메인티넌스 실린더에 기록된 슬라이스 레벨의 변동에 따른 불량 수를 비교하여 최소를 슬라이스 레벨을 선정하는 단계를 포함하여 된 것을 특징으로 하는 하드 디스크 드라이브에서의 슬라이스 레벨 최적화 방법.(a) initializing the system by sequentially setting slice levels having different levels while setting head and zone counts; (b) initializing a specific position of the maintenance cylinder set for self-test; (c) setting a minimum value among the variables set in step (a) to execute the self test; (d) detecting an error by performing a read operation on the head and the zone at the slice level set in the step (c); (e) recording the detected error in a predetermined position of a maintenance cylinder for each type; (f) increasing the zone by one and determining whether the increased zone is greater than the maximum zone; (g) if the increased zone is less than or equal to the maximum zone in step (f), return to step (d) to detect an error; if the increased zone exceeds the maximum zone, increase the head by one and mask the head; ; (h) determining whether the increased head is the maximum head, and if not the maximum head, returns to step (c) to resume operation, and if it is the maximum head, increases the position and slice level of the maintenance cylinder by one; (i) determining whether the increased slice level is greater than a set maximum slice level; And (j) if the increased slice level is less than or equal to the set maximum slice level in step (i), the operation returns to step (c) to resume operation, and if the increased slice level exceeds the set maximum slice level, a maintenance cylinder And selecting the minimum slice level by comparing the number of defects according to the variation of the slice level recorded in the slice level. 제1항에 있어서, 상기 (a)단계의 헤드 카운트는 2비트로서 0~3까지의 카운트로 설정되고, 존 카운트는 4비트로서 0~15까지의 카운트로 설정되는 것을 특징으로 하는 하드 디스크 드라이브에서의 슬라이스 레벨 최적화 방법.The hard disk drive according to claim 1, wherein the head count of step (a) is set to 0 to 3 counts as 2 bits, and the zone count is set to 0 to 15 counts as 4 bits. Slice level optimization method in. 제1항에 있어서, 상기 (d)단계에서의 판독 동작은 ECC나 재시행 등의 조건을 지정하여, 그 지정된 조건 별로 판독 동작이 가능하도록 된 것을 특징으로 하는 하드 디스크 드라이브에서의 슬라이스 레벨 최적화 방법.2. The method of claim 1, wherein the read operation in step (d) specifies a condition such as ECC or retry, and the read operation is enabled for each of the specified conditions. . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950013071A 1995-05-24 1995-05-24 Method for optimizing slice level in hard disk drive KR100327263B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950013071A KR100327263B1 (en) 1995-05-24 1995-05-24 Method for optimizing slice level in hard disk drive

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950013071A KR100327263B1 (en) 1995-05-24 1995-05-24 Method for optimizing slice level in hard disk drive

Publications (2)

Publication Number Publication Date
KR960042314A true KR960042314A (en) 1996-12-21
KR100327263B1 KR100327263B1 (en) 2002-06-27

Family

ID=37478386

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950013071A KR100327263B1 (en) 1995-05-24 1995-05-24 Method for optimizing slice level in hard disk drive

Country Status (1)

Country Link
KR (1) KR100327263B1 (en)

Also Published As

Publication number Publication date
KR100327263B1 (en) 2002-06-27

Similar Documents

Publication Publication Date Title
US6078453A (en) Method and apparatus for optimizing the servo read channel of a hard disk drive
KR100515720B1 (en) How to Optimize Lead / Light Channel Factors
US6947234B2 (en) Method, system, and program for performing error correction in a storage device having a magnetic storage medium
EP1211683B1 (en) Servo defect management scheme in hard disk drives
GB2326755A (en) Method of establishing the capacity of a hard disk drive
KR100527238B1 (en) Reallocating Data Sector by Soft Defect Detection
KR20050034192A (en) Method for determining a type of head and method for optimizing of recording parameter thereof in hard disk drive
KR870011607A (en) Target address search method and apparatus
US6728054B2 (en) Drive with adaptive data format and head switch sequencing
US5895438A (en) Inline disk tester
KR100238369B1 (en) Disk device apparatus and error recovery method in the drive apparatus
KR980004792A (en) How to control location error signal of hard disk drive
US20070025006A1 (en) Sector format setting processing method for disk storage device and disk storage device
KR100238129B1 (en) Index pulse generating method and hdd
EP1136988A2 (en) Read focus optimization for an optical disk drive
KR960042314A (en) How to Optimize Slice Levels on Hard Disk Drives
US7864647B2 (en) Method and apparatus for optimization of data pulse detection slice level
US20020147945A1 (en) Automated analysis of interface timing measurements
US7286319B2 (en) Disk drive write control by servo gain
KR100194026B1 (en) How to measure track width
CN101609705B (en) Apparatus and method for writing code data into storage medium
KR100346681B1 (en) Head switching method of magnetic recording medium
JPH06243493A (en) Optical disk device
KR100630771B1 (en) Method for testing the weak write and apparatus thereof
KR0160197B1 (en) Setting method of read channel factor valve of hand disk drive

Legal Events

Date Code Title Description
A201 Request for examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20070125

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee