CN110471789A - Solid state hard disk error correction method and solid state hard disk - Google Patents
Solid state hard disk error correction method and solid state hard disk Download PDFInfo
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- CN110471789A CN110471789A CN201910591236.XA CN201910591236A CN110471789A CN 110471789 A CN110471789 A CN 110471789A CN 201910591236 A CN201910591236 A CN 201910591236A CN 110471789 A CN110471789 A CN 110471789A
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- 239000007787 solid Substances 0.000 title claims abstract description 150
- 238000012937 correction Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000015654 memory Effects 0.000 claims abstract description 39
- 238000003860 storage Methods 0.000 claims description 19
- 238000013507 mapping Methods 0.000 claims description 17
- 238000013480 data collection Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
- G06F11/1068—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices in sector programmable memories, e.g. flash disk
-
- 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
- G06F3/0608—Saving storage space on 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
- G06F3/0602—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
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Quality & Reliability (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
- Detection And Correction Of Errors (AREA)
Abstract
The present invention relates to a kind of error correction method of solid state hard disk and solid state hard disks, which comprises judges whether the solid state hard disk supports the first error correcting system of the first data set；If the solid state hard disk does not support the first error correcting system of the first data set, judge whether the solid state hard disk supports the first error correcting system of the second data set；If the solid state hard disk supports the first error correcting system of the second data set, make the solid state hard disk to the second data set using the first error correcting system error correction；Wherein, first data set includes second data set.The data reliability of solid state hard disk had not only can be improved in the embodiment of the present invention, but also can reduce the memory space of redundant data occupancy.
Description
Technical field
The present invention relates to memory area more particularly to a kind of solid state hard disk error correction method and solid state hard disks.
Background technique
Solid state drive (Solid State Drive, abbreviation SSD), is commonly called as solid state hard disk, is to store core with solid-state electronic
Chip arrays and manufactured hard disk.SSD is made of control unit and storage unit, and storage unit is usually nand memory.
Existing storage equipment, especially in solid state hard disk, data store occasional and mistake occur, in order to increase data
Reliability, storage equipment introduces a variety of error correction methods, including ECC, RAID etc..
(Redundant Arrays of Independent Drives, what independent disk was constituted has redundancy energy to RAID
The array of power, abbreviation RAID) error correction is a kind of higher error correcting system of reliability.RAID technique mainly includes RAID-0/1/5/
Several specifications such as 10, their data redudancy are all not quite similar to the degree of protection of data.In several specifications of RAID, number
It is higher according to redundancy, it is more reliable to the protection of data, but the memory space of SSD is limited, redundant digit used in error correction
According to more, i.e., data reliability is higher, and the memory space of occupancy is more.
In the prior art, it is also difficult to solve the contradiction between the data reliability of solid state hard disk and the memory space of occupancy.
Summary of the invention
In order to solve the above-mentioned technical problem or it at least is partially solved above-mentioned technical problem, it is solid that the present invention provides one kind
The data reliability of solid state hard disk had not only can be improved in state hard disk error correction method, but also can reduce the storage sky of redundant data occupancy
Between.
In a first aspect, providing a kind of solid state hard disk error correction method, which comprises
Judge whether the solid state hard disk supports the first error correcting system of the first data set；
If the solid state hard disk does not support the first error correcting system of the first data set, judge whether the solid state hard disk props up
Hold the first error correcting system of the second data set；
If the solid state hard disk supports the first error correcting system of the second data set, make the solid state hard disk to the second data
Collection uses the first error correcting system error correction；
Wherein, first data set includes second data set.
Optionally, if the solid state hard disk supports the first error correcting system of the first data set, make the solid state hard disk pair
First data set uses the first error correcting system error correction.
Optionally, if the solid state hard disk does not support the first error correcting system of the second data set, make the solid state hard disk
Second error correcting system error correction is used to second data set；
Wherein, the amount of redundant data that the second error correcting system of second data set generates is less than second data set
The amount of redundant data that first error correcting system generates.
Optionally, second data set is the mapping table of the solid state hard disk, and the mapping table is used to indicate data
Corresponding relationship between logical storage address and the physical storage address of data.
Optionally, first error correcting system for judging solid state hard disk and whether supporting the first data set, comprising:
Judge whether the memory space of the solid state hard disk meets the first error correcting system demand of first data set
Memory space.
Optionally, first error correcting system for judging solid state hard disk and whether supporting the second data set, comprising:
Judge whether the memory space of the solid state hard disk meets the first error correcting system demand of second data set
Memory space.
Optionally, first error correcting system is RAID5 error correcting system.
Optionally, second error correcting system is ECC error correction mode.
Second aspect, provides a kind of solid state hard disk, and the solid state hard disk includes:
Judging unit, for judging whether the solid state hard disk supports the first error correcting system of the first data set；
The judging unit is also used to, if the solid state hard disk does not support the first error correcting system of the first data set, is sentenced
Whether the solid state hard disk of breaking supports the first error correcting system of the second data set；
Error correction unit, if the first error correcting system of the second data set is supported for the solid state hard disk, to the second data
Collection uses the first error correcting system error correction；
Wherein, first data set includes second data set.
Optionally, the error correction unit is also used to, if the solid state hard disk supports the first error correcting system of the first data set,
The first error correcting system error correction then is used to first data set.
In solid state hard disk error correction method provided in an embodiment of the present invention, first judge whether the solid state hard disk supports the first number
According to the first error correcting system of collection；If the solid state hard disk does not support the first error correcting system of the first data set, judge described solid
Whether state hard disk supports the first error correcting system of the second data set；If the solid state hard disk supports the first error correction of the second data set
Mode then makes the solid state hard disk to the second data set using the first error correcting system error correction；Wherein, first data set includes
Second data set.In the embodiment of the present invention, the first data set includes the second data set, if solid state hard disk is not supported to the
First error correcting system of one data set reduces the range of data set then the first data set is reduced into the second data set,
Judge whether to support the first error correcting system again.Since the first data set includes the second data set, using identical error correction side
Formula, the redundant data that the second data set generates are less than the redundant data of the first data set generation, use to the second data set
First error correcting system can occupy less memory space, the data reliability of solid state hard disk not only can be improved, but also can reduce
The memory space that redundant data occupies.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
In order to more clearly illustrate the embodiment of the present invention or technical solution in the prior art, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without any creative labor, is also possible to obtain other drawings based on these drawings.
Fig. 1 show the flow chart of the solid state hard disk error correction method of the embodiment of the present invention；
Fig. 2 show the flow chart of the solid state hard disk error correction method of the embodiment of the present invention；
Fig. 3 show the flow chart of the solid state hard disk error correction method of the embodiment of the present invention.
Specific embodiment
To remove the purposes, technical schemes and advantages of the embodiment of the present invention more, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is purged, is fully described by, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 show the flow chart of the solid state hard disk error correction method of the embodiment of the present invention, as shown in Figure 1, the method packet
It includes:
Step 110, judge whether the solid state hard disk supports the first error correcting system of the first data set；
Step 120, if the solid state hard disk does not support the first error correcting system of the first data set, judge that the solid-state is hard
Whether disk supports the first error correcting system of the second data set；
Step 130, if the solid state hard disk supports the first error correcting system of the second data set, make the solid state hard disk pair
Second data set uses the first error correcting system error correction；
Wherein, first data set includes second data set.
In the embodiment of the present invention, first judge whether the solid state hard disk supports the first error correcting system of the first data set；If
The solid state hard disk does not support the first error correcting system of the first data set, then judges whether the solid state hard disk supports the second data
First error correcting system of collection；If the solid state hard disk supports the first error correcting system of the second data set, make the solid state hard disk
First error correcting system error correction is used to the second data set；Wherein, first data set includes second data set.The present invention
In embodiment, the first data set includes the second data set, if solid state hard disk does not support the first error correction side to the first data set
Formula reduces the range of data set then the first data set is reduced into the second data set, then judge whether to support that first entangles
Wrong mode.Since the first data set includes the second data set, using identical error correcting system, the second data set is generated superfluous
Remainder can be occupied more according to the redundant data for being less than the generation of the first data set, to the second data set using the first error correcting system
The data reliability of solid state hard disk had not only can be improved in few memory space, but also can reduce the memory space of redundant data occupancy.
In the embodiment of the present invention, if the solid state hard disk supports the first error correcting system of the first data set, make described solid
State hard disk uses the first error correcting system error correction to first data set.
In the embodiment of the present invention, if the solid state hard disk does not support the first error correcting system of the second data set, make described
Solid state hard disk uses the second error correcting system error correction to second data set；
Wherein, the amount of redundant data that the second error correcting system of second data set generates is less than second data set
The amount of redundant data that first error correcting system generates.
In the embodiment of the present invention, for identical data, the amount of redundant data that the second error correcting system generates is less than first
The amount of redundant data that error correcting system generates, therefore, if solid state hard disk does not support the first error correcting system of the second data set,
Second error correcting system is used to the second data set, less data amount of redundancy is can produce, can protect the second data set, simultaneously
Less memory space can also be occupied, the more free memories of user is left for, the data of solid state hard disk both can be improved
Reliability, and the memory space of redundant data occupancy can be reduced.
In the embodiment of the present invention, second data set is the mapping table of the solid state hard disk, and the mapping table is for referring to
Corresponding relationship between the logical storage address of registration evidence and the physical storage address of data.
For solid state hard disk, mapping table is very important data, once there are mistake, other data of storage in mapping table
Very likely also occur mistake, in described solid state hard disk, relatively reliable error correction method should be used to mapping table.
In the embodiment of the present invention, the first data set can be the data of all storages in solid state hard disk, and the second data set can
To be the mapping table of solid state hard disk.If solid state hard disk supports error correction to all data, all to the data of all storages
It is highest for carrying out the reliability of error correction, if solid state hard disk is not supported to carry out error correction, this hair to the data of all storages
In bright embodiment, error correction is carried out to prior mapping table, can be generated related to avoid other data because of mapping table mistake
The mistake of property, can improve the reliability of data to a certain extent.
In the embodiment of the present invention, first error correcting system for judging solid state hard disk and whether supporting the first data set, comprising:
Judge whether the memory space of the solid state hard disk meets the first error correcting system demand of first data set
Memory space.
In the embodiment of the present invention, first error correcting system for judging solid state hard disk and whether supporting the second data set, comprising:
Judge whether the memory space of the solid state hard disk meets the first error correcting system demand of second data set
Memory space.
In the embodiment of the present invention, first error correcting system is RAID5 error correcting system.
In the embodiment of the present invention, second error correcting system is ECC error correction mode.
In the embodiment of the present invention, judge whether solid state hard disk supports certain error correcting system of certain data set refers to judge that solid-state is hard
Whether the memory space of disk meets the memory space of certain error correcting system demand of certain data set.It is commonly stored in device, one can be delimited
Fixed capacity is used for error correction, therefore the memory space for meeting certain error correcting system demand of certain data set refers to that the capacity delimited is
The memory space of no certain the error correcting system demand for meeting certain data set, without referring to whether the whole volume of solid state hard disk meets certain
The memory space of certain error correcting system demand of data set.
In the embodiment of the present invention, the first error correcting system is RAID5 error correcting system, and the second error correcting system is ECC error correction mode,
In other embodiments of the present invention, the first error correcting system and the second error correcting system or other error correcting systems be can be, the present invention is not
It repeats again.
In solid state hard disk field, in order to guarantee the reliability of data, it will usually ECC error correction is all carried out to all data,
In the embodiment of the present invention, the second error correcting system can be ECC error correction mode, using the second error correcting system to the second data set error correction
It can be on the basis of all carrying out ECC error correction to all data, secondary ECC error correction carried out to the second data set.
The embodiment of the invention provides a kind of error correction method of solid state hard disk, in this method, the solid state hard disk is first judged
Whether first error correcting system of first data set is supported；If the solid state hard disk does not support the first error correction side of the first data set
Formula, then judge whether the solid state hard disk supports the first error correcting system of the second data set；If the solid state hard disk supports second
First error correcting system of data set then makes the solid state hard disk to the second data set using the first error correcting system error correction；Wherein, institute
Stating the first data set includes second data set.In the embodiment of the present invention, the first data set includes the second data set, if solid
State hard disk is not supported to contract to the first error correcting system of the first data set then the first data set is reduced into the second data set
The small range of data set, then judge whether to support the first error correcting system.Since the first data set includes the second data set,
Using identical error correcting system, the redundant data that the second data set generates is less than the redundant data of the first data set generation,
Less memory space can be occupied using the first error correcting system to the second data set, the data that solid state hard disk both can be improved can
By property, and the memory space of redundant data occupancy can be reduced.
Fig. 2 show the flow chart of the solid state hard disk error correction method of the embodiment of the present invention, as shown in Fig. 2, the method packet
It includes:
Step 210, judge whether the solid state hard disk supports the first error correcting system of the first data set.
If it is not, then going to step 220；If so, going to step 230.
Step 220, judge whether the solid state hard disk supports the first error correcting system of the second data set.
If so, go to step 240, if it is not, then going to step 250.
Step 230, make the solid state hard disk to the first data set using the first error correcting system error correction, go to step 260.
Step 240, make the solid state hard disk to the second data set using the first error correcting system error correction, go to step 260.
Step 250, the solid state hard disk uses the second error correcting system error correction to the second data set.
Step 260, terminate.
The method of the embodiment of the present invention not only can be improved the data reliability of solid state hard disk, but also can reduce redundant data
The memory space of occupancy.
Fig. 3 show the flow chart of the solid state hard disk error correction method of the embodiment of the present invention, as shown in figure 3, the method packet
It includes:
Step 310, judge whether the solid state hard disk supports the RAID5 error correction to all data.
If it is not, then going to step 320；If so, going to step 330.
Step 320, judge whether the solid state hard disk supports the RAID5 error correction of mapping table.
If so, go to step 340, if it is not, then going to step 350.
Step 330, make the solid state hard disk to the RAID5 error correction of all data, go to step 360.
Step 340, make the solid state hard disk to mapping table using RAID5 error correction, go to step 360.
Step 350, make the solid state hard disk to mapping table using ECC error correction.
Step 360, terminate.
The method of the embodiment of the present invention not only can be improved the data reliability of solid state hard disk, but also can reduce redundant data
The memory space of occupancy.
It is corresponding with above-mentioned solid state hard disk error correction method, it is described solid the embodiment of the invention also discloses a kind of solid state hard disk
State hard disk includes:
Judging unit, for judging whether the solid state hard disk supports the first error correcting system of the first data set；
The judging unit is also used to, if the solid state hard disk does not support the first error correcting system of the first data set, is sentenced
Whether the solid state hard disk of breaking supports the first error correcting system of the second data set；
Error correction unit, if the first error correcting system of the second data set is supported for the solid state hard disk, to the second data
Collection uses the first error correcting system error correction；
Wherein, first data set includes second data set.
In the embodiment of the present invention, the error correction unit is also used to, if the solid state hard disk supports the first of the first data set
Error correcting system then uses the first error correcting system error correction to first data set.
In the embodiment of the present invention, the error correction unit is also used to, if the solid state hard disk does not support the of the second data set
One error correcting system then makes the solid state hard disk to second data set using the second error correcting system error correction；
Wherein, the amount of redundant data that the second error correcting system of second data set generates is less than second data set
The amount of redundant data that first error correcting system generates.
In the embodiment of the present invention, second data set is the mapping table of the solid state hard disk, and the mapping table is for referring to
Corresponding relationship between the logical storage address of registration evidence and the physical storage address of data.
In the embodiment of the present invention, first error correcting system for judging solid state hard disk and whether supporting the first data set, comprising:
Judge whether the memory space of the solid state hard disk meets the first error correcting system demand of first data set
Memory space.
It is described to state the first error correcting system for judging whether solid state hard disk supports the second data set, packet in the embodiment of the present invention
It includes:
Judge whether the memory space of the solid state hard disk meets the first error correcting system demand of second data set
Memory space.
In the embodiment of the present invention, first error correcting system is RAID5 error correcting system.
In the embodiment of the present invention, second error correcting system is ECC error correction mode.
The method of the embodiment of the present invention not only can be improved the data reliability of solid state hard disk, but also can reduce redundant data
The memory space of occupancy.
The embodiment of the invention provides a kind of solid state hard disk error correction method and solid state hard disk, the first data set includes the second number
According to collection, if solid state hard disk does not support that the first data set is reduced into second to the first error correcting system of the first data set
Data set, that is, reduce the range of data set, then judges whether to support the first error correcting system.Being due to the first data set includes
Two data sets, using identical error correcting system, the redundant data that the second data set generates is less than the generation of the first data set
Redundant data, less memory space can be occupied using the first error correcting system to the second data set, solid-state both can be improved
The data reliability of hard disk, and the memory space of redundant data occupancy can be reduced.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The above is only a specific embodiment of the invention, is made skilled artisans appreciate that or realizing this hair
It is bright.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to the principle and features of novelty phase one invented with this paper
The widest scope of cause.
Claims (10)
1. a kind of solid state hard disk error correction method, which is characterized in that the described method includes:
Judge whether the solid state hard disk supports the first error correcting system of the first data set；
If the solid state hard disk does not support the first error correcting system of the first data set, judge whether the solid state hard disk supports
First error correcting system of two data sets；
If the solid state hard disk supports the first error correcting system of the second data set, make the solid state hard disk to the second data centralized procurement
With the first error correcting system error correction；
Wherein, first data set includes second data set.
2. error correction method as described in claim 1, which is characterized in that if the solid state hard disk supports the first of the first data set
Error correcting system then makes the solid state hard disk to first data set using the first error correcting system error correction.
3. error correction method as described in claim 1, which is characterized in that if the solid state hard disk does not support the of the second data set
One error correcting system then makes the solid state hard disk to second data set using the second error correcting system error correction；
Wherein, the amount of redundant data that the second error correcting system of second data set generates is less than the first of second data set
The amount of redundant data that error correcting system generates.
4. error correction method as described in claim 1, which is characterized in that second data set is the mapping of the solid state hard disk
Table, the mapping table are used to indicate the corresponding relationship between the logical storage address of data and the physical storage address of data.
5. error correction method as described in claim 1, which is characterized in that described to judge whether solid state hard disk supports the first data set
The first error correcting system, comprising:
Judge whether the memory space of the solid state hard disk meets the storage of the first error correcting system demand of first data set
Space.
6. error correction method as described in claim 1, which is characterized in that described to judge whether solid state hard disk supports the second data set
The first error correcting system, comprising:
Judge whether the memory space of the solid state hard disk meets the storage of the first error correcting system demand of second data set
Space.
7. error correction method as described in claim 1, which is characterized in that first error correcting system is RAID5 error correcting system.
8. error correction method as claimed in claim 3, which is characterized in that second error correcting system is ECC error correction mode.
9. a kind of solid state hard disk, which is characterized in that the solid state hard disk includes:
Judging unit, for judging whether the solid state hard disk supports the first error correcting system of the first data set；
The judging unit is also used to, if the solid state hard disk does not support the first error correcting system of the first data set, judges institute
State the first error correcting system whether solid state hard disk supports the second data set；
Error correction unit, if the first error correcting system of the second data set is supported for the solid state hard disk, to the second data centralized procurement
With the first error correcting system error correction；
Wherein, first data set includes second data set.
10. solid state hard disk as claimed in claim 9, which is characterized in that the error correction unit is also used to, if the solid state hard disk
It supports the first error correcting system of the first data set, then the first error correcting system error correction is used to first data set.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114550806A (en) * | 2022-04-26 | 2022-05-27 | 杭州阿姆科技有限公司 | Double-layer error correction method applied to SSD |
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