CN105912279B - Solid-state storage recovery system and solid-state storage recovery method - Google Patents
Solid-state storage recovery system and solid-state storage recovery method Download PDFInfo
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- CN105912279B CN105912279B CN201610333032.2A CN201610333032A CN105912279B CN 105912279 B CN105912279 B CN 105912279B CN 201610333032 A CN201610333032 A CN 201610333032A CN 105912279 B CN105912279 B CN 105912279B
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- 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
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- 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
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0652—Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket
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- 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
- G06F3/0683—Plurality of storage devices
- G06F3/0688—Non-volatile semiconductor memory arrays
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Abstract
The present invention provides a kind of solid-state storage recovery system and methods, the system includes: solid-state storage array, interface module, storage control module and firmware module, wherein, if data to be written are not belonging to the data type of setting, the data that storage control module is arranged to be written into are written to solid-state storage array, if data to be written belong to the data type of setting, the data that then storage control module is arranged to be written into are written to firmware module, and the physical memory cell to match in solid-state storage array with data to be written is recycled, to be used for wear leveling.Solid state memory space is promoted to recycle using system and method provided by the present invention.
Description
Technical field
The present invention relates to solid state storage technologies.Specifically, be related to the physical space for recycling solid storage device is
System and method.
Background technique
Solid storage device creates non-volatile memories usually using memory cell arrays.In flash memory device, no matter
It is that single layer cell or multilevel-cell all can serve as long-term storage equipment to realize.Only has a ratio in single layer cell (SLC)
Bit length supports about 100,000 programmings or erasing circulate operation for current available technology.Multilevel-cell (MLC)
Possess variable charge and more information, but failure rate is higher compared with SLC.For MLC, a typical program/erase
Specification is currently 10000 circulate operations.In both cases, wear-leveling algorithm is carried out, to prevent from depositing same
Duplicate write operation is executed in storage unit block.
By used on a small quantity or not used unit in distribute write operation, wear-leveling algorithm can improve storage and set
Standby write-in processing capacity.When store a large amount of available cells in equipment it is unutilized when, wear-leveling algorithm operation more added with
Efficiency.Under these conditions, wear-leveling algorithm can substantially reduce the average time of the write operation on each unit, to mention
High solid storage device uses the time.
Summary of the invention
For current existing solid state memory space recovery method, there is no can be fully solved this class problem and meet field
The best approach of demand.Inventor proposes technical solution of the present invention for solving at least one side of the problems of the prior art
Face, to overcome disadvantages mentioned above to promote the recycling of solid state memory space.
Provided solid-state storage recovery system according to the present invention comprising: solid-state storage array, the solid-state storage battle array
Arrange the solid-state storage physical unit having for being written and reading data；Interface module, the interface module are arranged to receive
Write order and data to be written；Storage control module, the storage control module are arranged to control and deposit to the solid-state
Store up the write-in or reading of array；Firmware module, the firmware module is for storing data identical with the data type set；It reflects
Module is penetrated, the mapping block is arranged to manage one or more mapping tables；Wherein, if the data to be written are not belonging to
The data type of setting, the data that the storage control module is arranged to be written into are written to the solid-state storage array；Such as
Data to be written described in fruit belong to the data type of setting, then the data that storage control module is arranged to be written into are written to
The firmware module；The mapping block can read data from the solid-state storage array, thus in mapping block
Mapping table is updated.
In embodiments of the present invention, logical storage address is recorded in solid-state storage array in the mapping table to physics
Storage address mapping.
In embodiments of the present invention, the storage control module reads the mapping table in the mapping block, with true
The logical storage address of the fixed data to be written and physical storage address.
In embodiments of the present invention, the mapping block is stored in the solid-state storage array, if to be written
Data belong to the data type of setting, then are stored in mutually matching with the data to be written in the solid-state storage array
The entry of mapping table is deleted, and recycles the physical storage address for storing the entry.
A kind of solid-state storage recovery method also provided according to the present invention comprising following steps: receive writing commands with
And data to be written；Identify whether data to be written belong to the data type of setting；
If data to be written are not belonging to the data type of setting, the data being written into are written to the solid-state storage
Array；If data to be written belong to the data type of setting, the data being written into are written to firmware module；It is written into
Data be written solid-state storage array the step of, realized by mapping table, the mapping table can be according to solid-state storage battle array
Data in column are updated.
In embodiments of the present invention, wherein logical storage address in solid-state storage array is recorded in the mapping table
To the mapping of physical storage address.
In embodiments of the present invention, wherein using the data in the mapping table, with the determination data to be written
Logical storage address and physical storage address.
In embodiments of the present invention, the mapping table is stored in solid-state storage array, if data category to be written
In the data type of setting, then the mapping table mutually matched with the data to be written that is stored in the solid-state storage array
Entry be deleted, and recycle store the entry physical storage address.
Detailed description of the invention
From later in conjunction with description of the attached drawing to embodiment, these and or other sides of exemplary embodiment of the present invention
Face and advantage will become obvious and be easier to understand, in the accompanying drawings:, in which:
Fig. 1 shows the embodiment of solid-state storage recovery system according to the present invention；
Fig. 2 shows the another embodiments of solid-state storage recovery system according to the present invention；
Fig. 3 shows the another embodiment of solid-state storage recovery system according to the present invention；
Fig. 4 shows the flow chart of solid-state storage recovery method according to the present invention；
Fig. 5 shows the schematic diagram of address of cache scene according to the present invention.
Specific embodiment
The functional unit described in the present specification has been labeled as module, more specifically to emphasize their reality
It is existing.For example, module may be implemented as hardware circuit, including customization VLSI circuit or gate array, ready-made, shelf semiconductor is all
Such as logic chip, transistor or other discrete components；Equally, module can also programmable hardware device (such as: gate array,
Programmable array logic, solid-state memory, programmable logic device etc.) it realizes.
Module can also be realized by different types of processor, for executing in software.The determination of executable code
Module may include the logic or physical block of one or more computer instructions, such as: object, process or the function organized.To the greatest extent
Pipe is in this way, the executable file of determining module need not be placed on same physical address, but can be stored by the difference of same storage
Content composition in unit, it is only necessary to when the entirely different instruction of the module being joined logically together when needed,
It should be to realize the given application of the module.
In fact, the module comprising executable code can be an instruction, a plurality of instruction can also be, it might even be possible to be distributed
To different code segments, be present in different programs between, can also be across multiple storage equipment.Equally, the operation data in module can
Identified and explanation, and can show and combine in suitable form in the data structure of any appropriate type.Execute number
It is collected according to can be used as single data set, the different places for being perhaps distributed to different storage device or only part
As the electronic signal in system or network, there are also possible.
To " one embodiment " in this specification, the reference of " embodiment " or similar language means to include at least
In a specific feature of application example of the invention, structure or the feature described with the embodiment.Likewise, this specification
Middle " in the application example " used or " in an application example " and similar language can with but be not necessarily referring to same
Application example.
In addition, feature described in the present invention, structure or characteristic can be answered in one or more in any suitable manner
With the use that is combined in example.In subsequent description, such as Programming Skills, software module, user's selection, network trading, data
Library inquiry, hardware chip, hardware module, hardware circuit etc. provide many details, thoroughly understand this hair for supporting
Bright application example.In for his example, well-known structure, material or operation will not be described in detail further or show, with
Related link of the present invention is avoided to be confused.
The present invention is further detailed and is illustrated below by way of attached drawing combination specific embodiment, but please be infuse
Meaning, feature shown in the drawings do not show that technical solution of the present invention must include this feature, and those skilled in the art can root
It is deleted according to actual conditions and is increased and be combined with each other.
As shown in Figure 1-3, it illustrates three kinds of different embodiments of solid-state storage recovery system of the invention.
Specifically, as shown in Figure 1, it illustrates solid-state storage recovery systems 130 comprising: solid-state storage array 140,
The solid-state storage array has the solid-state storage physical unit for being written and reading data；Interface module, the interface mould
Block is arranged to receive write order and data to be written；Storage control module 142, the storage control module are arranged to
Control the write-in or reading to the solid-state storage array；Firmware module 138, the firmware module are used for the number for storing and setting
According to the identical data of type；Wherein, if the data to be written are not belonging to the data type of setting, the storage controls mould
The data that block is arranged to be written into are written to the solid-state storage array 140；If the data to be written belong to setting
Data type, then the data that storage control module is arranged to be written into are written to the firmware module, and by solid-state storage
The physical memory cell recycling to match in array with data to be written, to be used for wear leveling.
Fig. 1 also show with the computer equipment 110 that interacts of the present invention, the computer equipment 110 is to solid-state storage
Recovery system 130 is written and read, while being managed to the access of solid-state storage array 140.Embodiment party according to figure 1
Formula, solid-state storage recovery system of the invention enable the system by reading and writing the minimum of number to solid-state storage array 140
Faster access speed is enough provided, it is minimum to the loss of solid-state storage array.
In addition, computer equipment 110 and solid-state storage recovery system are separately positioned, in the embodiment shown in figure 1,
The outside of computer equipment 110 is arranged in solid-state storage recovery system, however, those skilled in the art can also be by solid-state storage
Recovery system is arranged in the inside of computer equipment 110 or computer equipment 110 is arranged in solid-state storage recovery system 130
Inside.In other words, those skilled in the art according to actual needs can be suitably arranged above-mentioned component.
As shown in Figure 1, firmware module 138 and solid-state storage array 140 are separately positioned, however, those skilled in the art
It can be using other set-up modes, for example, marking off certain memory space in solid-state storage array 140 as firmware
Module 138.
In embodiments of the present invention, computer equipment 110 also can be used as main or secondary memory module and be applied to admittedly
State stores in recovery system 130.Computer equipment 110 can generate the data packet 120 comprising read write command, thus data packet
120 can be read and write.Solid-state storage recovery system 130 passes through an interface module received data packet 120.
Referring to shown in attached drawing 2, another embodiment according to the present invention, interface module may include interface control module
132 and interface caching 134.Other modules also can be set for interface module in certain those skilled in the art.
Interface control module 132 can be configured to serve as processing equipment agreement, report computer equipment 110 or solid-state storage and return
The error of transmission of receipts system 130.In addition, interface control module 132 can be responsible for transmitting data packet to computer equipment.
Data packet stream can cache 134 by interface and be managed and control.Interface caching can temporarily store information, when need
Data packet will be transmitted to storage control module 142 when wanting.
As shown in figure 3, solid-state storage recovery system 130 further includes mapping it illustrates another embodiment of the invention
Module 136, the mapping block 136 are arranged to manage one or more mapping tables, record solid-state storage array 140 in mapping table
Mapping of the middle logical storage address to physical storage address.Mapping block can read data from solid-state storage array, thus
Mapping table in mapping block is updated.Storage control module 142 reads the mapping table in the mapping block, with determination
The logical storage address of the data to be written and physical storage address.
Mapping block 136 can store in solid-state storage array 140, if data to be written belong to the data class of setting
Type, the then entry for being stored in the mapping table mutually matched with the data to be written in the solid-state storage array are deleted,
And recycle the physical storage address for storing the entry.
Here " data type of setting " is data type predetermined, for example, general data type, that is, technology
Personnel can set data type according to different systems or different modes of operation, so that it is as setting
It is used in the solid-state storage recovery system of data type in the present invention.
The embodiment gone out according to Fig.3, storage control module 142 can permit access map module 136, firmware mould
Block 138 and solid-state storage array 140, to provide read-write capability to computer equipment 110.In a particular embodiment, it reflects
Penetrating module 136 can store in solid-state storage array 140, and mapping block 136 includes the logical address of access storing data.It reflects
It penetrates module 136 and manages one or more mapping tables, logical storage address in solid-state storage array is had recorded in these mapping tables and is arrived
Physical storage address mapping.
In embodiment provided by the present invention, for example, solid-state storage controls mould in the case where executing write operation
Block 142 is communicated with mapping block 136, is physically written address with available in the determination solid-state storage array 140.To
Data to be written can be written into the solid storage device array 140 and logical storage address reflecting to physical storage address
It penetrates and is acquired by mapping block 136.
In an embodiment of the present invention, which reads mapping table letter from the solid-state storage array 140
Breath, when needing equipment initialization, storage and more new information in operation and be written or mapping table is written starting write operation
It is stored for a long time in solid-state storage array 140.The mapping block can be realized wear-leveling algorithm and be written every time into mapping table
When content, different positions can be distributed in solid-state storage array 140 as needed.
When the data pattern that the Data Matching that solid-state storage array will be written is setting, storage control module 142 can be kept away
Exempt to be written to Data duplication in solid-state storage array 140, the logic unit of the storage is only simply mapped into the setting
In the storage location of data pattern, such as on firmware module, it is also possible to other methods.
In embodiments of the present invention, be mapped to one or more storage locations to the logic unit of storage can be with
It is realized by various means and method.For example, the particular code or physical store of the data type corresponding to the setting all may be used
To be inserted into mapping table.Likewise, the entry of storage logical units can also be deleted from mapping table；The mapping table clearly refers to
The logic unit of the storage contains the mode of the data type of the setting out.
The mode of embodiment according to the present invention, the data type of the setting can be stored in solid-state storage array 140
Setting data type Mode Areas in, also can store in firmware module 138.In the application, any kind of storage
Configuration can provide the mode storage of the data type of setting.
SDRAM is exactly typical case.In the external storage of storage array or the data type mode of generation setting to mitigate
Input and output load from solid-state storage array 140.
Embodiment according to the present invention introduces the mode of the data type for the setting that spare space is used to store or generate
The implementation for being significantly better than the prior art can be provided.For example, when the data being related to use the data type of setting, then
When read-write operation executes, solid-state storage array 140 is not required to be accessed.In another application example, in read operation process
In, if required mapping is not present in mapping table, the data type mode of setting will be returned, so that it is (latent to reduce access
High latency) solid-state storage array 140 and reduce mapping table needed for space.
In addition, the mapping block 136 can include the multiple logic address of the same physical address of direction.It is directed toward same physics
Address can eliminate the storage unit containing identical data mode in solid-state storage array 140.Under the premise of required space is minimum,
The solid storage device is capable of providing additional space for wear-leveling algorithm or similar.
In addition, the present invention also provides a kind of solid-state storage recovery methods comprising following steps: receive writing commands with
And data to be written；Identify whether data to be written belong to the data type of setting；If data to be written are not belonging to set
Data type, then the data being written into are written to the solid-state storage array；If data to be written belong to the number of setting
According to type, then the data being written into are written to firmware module, and will match in solid-state storage array with data to be written
Physical memory cell recycling, be used for wear leveling.
Wherein, it the step of data write-in solid-state storage array being written into, is realized by mapping table, the mapping
Logical storage address in solid-state storage array is recorded in table to map to physical storage address.
Wherein, the mapping table can be updated according to the data in solid-state storage array.
Wherein, using the data in the mapping table, with the logical storage address of the determination data to be written and physics
Storage address.
The mapping table is stored in solid-state storage array, if data to be written belong to the data type of setting, is deposited
The entry for storing up the mapping table mutually matched with the data to be written in the solid-state storage array is deleted, and is recycled and deposited
Store up the physical storage address of the entry.
As shown in figure 4, it illustrates a kind of flow charts of embodiment of provided method according to the present invention.
Wherein, according to the present invention provided by method, as shown in figure 4, solid-state storage recovery method comprising following step
It is rapid: to receive writing commands and data 210 to be written；Identify whether data to be written belong to the data type 220 of setting；Such as
Fruit data to be written are not belonging to the data type of setting, then the data being written into are written to the solid-state storage array 250；Such as
Fruit data to be written belong to the data type of setting, then the data being written into are written to firmware module 230, and by solid-state storage
The physical memory cell recycling to match in array with data to be written, to be used for wear leveling.
Wherein, it the step of data write-in solid-state storage array being written into, is realized by mapping table, the mapping
Logical storage address in solid-state storage array is recorded in table to map to physical storage address.
Wherein, the mapping table can be updated 280 according to the data in solid-state storage array.
Wherein, using the data in the mapping table, with the logical storage address of the determination data to be written and physics
Storage address 260.
The mapping table is stored in solid-state storage array, if data to be written belong to the data type of setting, is deposited
The entry for storing up the mapping table mutually matched with the data to be written in the solid-state storage array is deleted, and is recycled and deposited
Store up the physical storage address 240 of the entry.
It can also include the steps that adding logical mappings 290 according to the method for the present invention, if matched with write-in data
Mapping be not present, then logical mappings are added in mapping table.
Provided method according to the present invention, by identifying the mode of the data type of setting and having deposited during write operation
Mapping, this method can make solid state memory space be recovered and reuse.In an application example, the data class of the setting
Zero layer of the mode of type in system model or entire data model storage；In another application example, the data class of the setting
The data that the mode of type also may include are consistent with the formatting algorithm from low-level.
If these data to be written contain the data type of setting, these logical storage addresses should be mapped to setting
Data type mode.
Above-mentioned steps can be realized in several ways.For example, by the instruction of the data type mode of corresponding setting or
Physical storage address is inserted into mapping table.In addition, the entry of the logic unit of storage can be deleted from mapping table, this table
It is bright it contain the data type mode of setting.In particular, the solid storage device confirms logically in an application example
Location and removes it to the mapping of physical address from mapping table.When logical storage address be removed, storage control module 142
What the physical space of property in contrast was regarded is available.
The corresponding mapping address of storage physical unit for being then mapped to the data type mode of setting can be recycled for
Including then realizing use when wear-leveling algorithm.Provided embodiment according to the present invention, above-mentioned recycling can disobey
Any recycling order from external equipment, device drives or external interface of Lai Yu occurs.The ability of equipment inter-process recycling
A significant advantage is provided, such case is particularly evident in plug and play scheme.
If setting data type mode it is unrecognized, by these data be written physics solid state storage elements (block or
Sector).In application example, mapping table will be examined, and the mapping of the logic unit whether there is.If logical address arrives
The mapping of physical address exists, and so as to confirm logically and physically writing position, which will be updated, should with reflection
The physical address of data is written.If mapping is not present, logical mappings will be added into mapping table, so as to the number to be newly written
According to establishing the mapping of logical address to physical address.
Particularly, applicant indicate that, the step in the above method is not required, and those skilled in the art can be according to reality
Border needs to choose the whole of the step in the above method, also can choose a part and carries out using the flow chart that Fig. 4 is shown is
A preferred embodiment of the invention, does not constitute a limitation of the invention.
The principle of mapping in order to better understand the present invention and the process of realization, Fig. 5 give address of the invention
Map schematic diagram.By the schematic diagram, those skilled in the art can be more clearly understood the present invention.
As shown in figure 5, mapping scenarios containment mapping table 305, logical address mapping 310, solid-state storage physical unit 320 with
And with the firmware 330 stored to the data type of setting.Map multiple logic storage address to same physical address or/
The physical store quantity in storage array for data storage allocation can be reduced with substitution storage address.
In the example shown in figure 5, logical address mapping 310a and 310b is associated with same physics solid-state storage list simultaneously
First 320a, logical address mapping can be directed toward storage alternate source, such as firmware 330.In this example, logical address mapping 310c and
Firmware address is directed toward in data type mode storage or code 332 of the 310d as setting.For example, which can be for such as
Storage control module 140 etc generates common-mode.Physics solid metal block external storage or generate setting data type mode,
More available spaces can be provided for write operation and wear leveling process in future.
As described above, described application example, only understands for this field related personnel and uses.So this system and side
Method is not limited to lifted use-case in text.
Claims (8)
1. a kind of solid-state storage recovery system comprising:
Solid-state storage array, the solid-state storage array have the solid-state storage physical unit for being written and reading data；
Interface module, the interface module are arranged to receive write order and data to be written；
Storage control module, the storage control module are arranged to control the write-in or reading to the solid-state storage array；
Firmware module, the firmware module is for storing data identical with the data type set；
Mapping block, the mapping block are arranged to manage one or more mapping tables；
Wherein, if the data to be written are not belonging to the data type of setting, the storage control module is arranged to will be to
The data of write-in are written to the solid-state storage array；
If the data to be written belong to the data type of setting, storage control module is arranged to the data being written into
It is written to the firmware module；
The mapping block can read data from the solid-state storage array, to carry out to the mapping table in mapping block
It updates.
2. system according to claim 1, wherein record logical storage address in solid-state storage array in the mapping table
To the mapping of physical storage address.
3. system according to claim 2, the storage control module reads the mapping table in the mapping block, with true
The logical storage address of the fixed data to be written and physical storage address.
4. according to system described in any one of aforementioned claim, the mapping block is stored in the solid-state storage array,
If data to be written belong to the data type of setting, be stored in the solid-state storage array with the number to be written
It is deleted according to the entry of the mapping table mutually matched, and recycles the physical storage address for storing the entry.
5. a kind of solid-state storage recovery method comprising following steps:
Receive writing commands and data to be written；
Identify whether data to be written belong to the data type of setting；
If data to be written are not belonging to the data type of setting, the data being written into are written to the solid-state storage battle array
Column；
If data to be written belong to the data type of setting, the data being written into are written to firmware module；
It the step of data write-in solid-state storage array being written into, is realized by mapping table, the mapping table being capable of root
It is updated according to the data in solid-state storage array.
6. according to the method described in claim 5, wherein, logical storage address in solid-state storage array is recorded in the mapping table
To the mapping of physical storage address.
7. according to the method described in claim 6, wherein, using the data in the mapping table, with the determination number to be written
According to logical storage address and physical storage address.
8. the mapping table is stored in solid-state storage array, if to be written according to method described in any one of aforementioned claim
The data entered belong to the data type of setting, then are stored in matching in the solid-state storage array with the data to be written
Mapping table entry be deleted, and recycle store the entry physical storage address.
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| CN106484323A (en) * | 2016-09-13 | 2017-03-08 | 郑州云海信息技术有限公司 | A kind of loss equalizing method of solid-state storage and system |
| CN109857239B (en) * | 2017-11-29 | 2022-04-08 | 浙江宇视科技有限公司 | Storage control method and device |
| US11126561B2 (en) * | 2019-10-01 | 2021-09-21 | Alibaba Group Holding Limited | Method and system for organizing NAND blocks and placing data to facilitate high-throughput for random writes in a solid state drive |
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| CN104391661A (en) * | 2014-12-12 | 2015-03-04 | 西安三星电子研究有限公司 | Method and equipment for writing data into solid hard disk |
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| CN102646069A (en) * | 2012-02-23 | 2012-08-22 | 华中科技大学 | Method for prolonging service life of solid-state disk |
| EP2801937A1 (en) * | 2013-05-09 | 2014-11-12 | Rockwell Automation Technologies, Inc. | Industrial device and system attestation in a cloud platform |
| CN103543955A (en) * | 2013-08-05 | 2014-01-29 | 记忆科技(深圳)有限公司 | Method and system for reading cache with solid state disk as equipment and solid state disk |
| CN103559138A (en) * | 2013-10-09 | 2014-02-05 | 华为技术有限公司 | Solid state disk (SSD) and space management method thereof |
| CN104391661A (en) * | 2014-12-12 | 2015-03-04 | 西安三星电子研究有限公司 | Method and equipment for writing data into solid hard disk |
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