CN106371773A - SSD unit, SSD device and data processing method based on SSD device - Google Patents
SSD unit, SSD device and data processing method based on SSD device Download PDFInfo
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- CN106371773A CN106371773A CN201610971486.2A CN201610971486A CN106371773A CN 106371773 A CN106371773 A CN 106371773A CN 201610971486 A CN201610971486 A CN 201610971486A CN 106371773 A CN106371773 A CN 106371773A
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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
- G06F3/0626—Reducing size or complexity of 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
- G06F3/0629—Configuration or reconfiguration of storage systems
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Abstract
The embodiment of the invention relates to the technical field of data storage and discloses an SSD unit, an SSD device and a data processing method based on the SSD device. The SSD unit comprises a main control chip and a storage medium controlled by the main control chip, wherein the main control chip is provided with two PCI-E interfaces which are a master-slave chip transmission interface PCIe root and a slave-master chip transmission interface PCIe endpoint respectively, the PCIe root is the interface for connection of the main control chip and a next SSD unit, and the PCIe endpoint is the interface for connection of the main control chip and a main control chip or a mainframe of a previous SSD unit, so that the SSD unit can achieve capacity expanding of the SSD device in a master-slave serial connection mode, the Host management complexity and CPU expenditure can be reduced, and meanwhile the cost of a PCIe Switch chip can be also saved.
Description
Technical field
The present invention relates to technical field of data storage, more particularly, to a kind of ssd unit, ssd equipment and be based on ssd equipment
Data processing method.
Background technology
The hard disk that solid state hard disc (solid state drives, ssd) is made up of solid-state electronic storage chip array, by
Main control chip and memory element composition.Solid state hard disc in the specification of interface and definition, function and using method with common hard disc
Identical, but performance has surmounted the several order of magnitude of conventional hard.Capacity requirement with ssd storage is increasing, right
More and more vigorous in craving for of Large Copacity ssd, and the storage medium capacity that single ssd main control chip can control is as producing
The development of technique level and increase, each iteration time need 1 year even more long to a year and a half, cannot meet specific visitor
Family paroxysmal capacity blast demand.
At present, in order to realize the capacity extension of ssd, user is realized by inserting more ssd in main frame host, but,
It is contemplated that on host ssd slot quantity limitation, the method can not meet the demand of user.Additionally, also having one kind
Method is to allow multiple master controls can be accessed by host on ssd using pcie switch simultaneously, participates in Fig. 1.Now host needs
Management cost, with multiple ssd equipment communications, by can be appreciated that multiple drives on this host, is increased by pcie switch, and
Cannot on this ssd installation operation system program.
Content of the invention
In view of the above problems, the present invention proposes a kind of ssd unit, ssd equipment and the data processing based on ssd equipment
Method, can not only realize the extension of memory capacity, and can reduce host complex management degree and cpu expense, simultaneously
The cost of pcie switch chip can have been saved.
A kind of one aspect of the present invention, there is provided ssd unit, is controlled including main control chip with by described main control chip
Storage medium, described main control chip is provided with two pci-e interfaces, respectively principal and subordinate's chip coffret pcie root and
From master chip coffret pcie endpoint, described principal and subordinate chip coffret pcie root be by described main control chip with
The interface that the main control chip of subordinate's ssd unit connects, described from master chip coffret pcie endpoint be by described master control
The interface that chip is connected with main control chip or the main frame of higher level's ssd unit.
Alternatively, described two pci-e interfaces are arranged on the same side of described main control chip or are distributed in described master control
The not ipsilateral of chip.
Alternatively, described pci-e is pci-e x4 or pci-e x8 interface.
A kind of another aspect of the present invention, there is provided ssd equipment, including at least two ssd units as above, point
Based on not ssd unit and at least one from ssd unit;
The ssd passing through pci-e bus and main frame from master chip coffret pcie endpoint of described main ssd unit
Slot connects, and the principal and subordinate chip coffret pcie root of described main ssd unit passes through pci-e bus with one from ssd unit
Connect from master chip coffret pcie endpoint, to realize main frame and main ssd unit by way of concatenation, and
Main ssd unit and the data communication between ssd unit.
Alternatively, described main ssd unit from master chip coffret pcie endpoint adopt pci-e x4 or pci-
E x8 interface and the connection of described main frame.
Alternatively, the principal and subordinate chip coffret pcie root of described main ssd unit adopts pci-e x4 or pci-e x8
Interface is connected from master chip coffret pcie endpoint from ssd unit with described.
Alternatively, the described principal and subordinate chip coffret pcie root from ssd unit passes through pci-e bus and the 3rd ssd
The connecting from master chip coffret pcie endpoint, to realize number between ssd unit and the 3rd ssd unit of unit
According to communication.
Another aspect of the invention, there is provided a kind of data processing method based on ssd equipment as above, the party
Method includes:
The data access instruction that Receiving Host sends, carries action type mark and logic in described data access instruction
Block address lba;
Determine that what whether the address realm indicated by described lba belonged to that the main control chip of described main ssd unit controlled deposits
Storage media;
If so, then corresponding data access process is carried out to main ssd unit according to described action type mark;
Otherwise, by described data access instruction be sent to described from ssd unit, for described from ssd unit according to described
Action type mark carries out corresponding data access process to from ssd unit, and returned data processes and completes response signal;
After completing response signal from the data processing that ssd unit returns described in receiving, send instruction to described main frame
Complete to respond.
Alternatively, when described action type is designated write operation,
Described mark according to described action type carries out corresponding data access process to main ssd unit, comprising: will wait to locate
Reason data writes the storage medium that the main control chip of described main ssd unit is controlled;
Described by data access instruction be sent to described from ssd unit, for described from ssd unit according to described operation class
Type mark carries out corresponding data access process to from ssd unit, comprising: by described data access instruction be sent to described from
Described pending data is write the storage being controlled from the main control chip of ssd unit for described from ssd unit by ssd unit
Medium, and return write-back to main ssd unit and complete response signal.
Alternatively, when described action type is designated read operation,
Described mark according to described action type carries out corresponding data access process to main ssd unit, comprising: according to institute
State the address realm indicated by lba and read data from the storage medium that the main control chip of described main ssd unit is controlled;
Described by data access instruction be sent to described from ssd unit, for described from ssd unit according to described operation class
Type mark carries out corresponding data access process to from ssd unit, comprising:
By described data access instruction be sent to described from ssd unit, for described from ssd unit according to described lba institute
The storage medium being controlled from the main control chip of ssd unit described in the address realm reading indicating, and the data being read is sent out
Deliver to described main ssd unit, by described main ssd unit by the data is activation being read to described main frame.
Ssd unit provided in an embodiment of the present invention, ssd equipment and the data processing method based on ssd equipment, by
The main control chip of ssd unit arranges two pci-e interfaces, respectively principal and subordinate's chip coffret pcie root and from master chip
Coffret pcie endpoint, principal and subordinate chip coffret pcie root are by described main control chip and subordinate's ssd unit
The interface that connects of main control chip, be will be mono- to described main control chip and higher level ssd from master chip coffret pcie endpoint
The interface of the main control chip of unit or main frame connection is so that ssd unit can realize ssd equipment by way of master and slave concatenation
Capacity extension, and host complex management degree and cpu expense can be reduced, also can save pcie switch chip simultaneously
Cost.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, and in order to allow the above and other objects of the present invention, feature and advantage can
Become apparent, below especially exemplified by the specific embodiment of the present invention.
Brief description
By reading the detailed description of hereafter preferred implementation, various other advantages and benefit are common for this area
Technical staff will be clear from understanding.Accompanying drawing is only used for illustrating the purpose of preferred implementation, and is not considered as to the present invention
Restriction.And in whole accompanying drawing, it is denoted by the same reference numerals identical part.In the accompanying drawings:
Fig. 1 shows a kind of structural representation of ssd equipment of the prior art;
Fig. 2 shows a kind of structural representation of ssd unit of the embodiment of the present invention;
Fig. 3 shows a kind of structural representation of ssd equipment of the embodiment of the present invention;
Fig. 4 shows a kind of structural representation of ssd equipment of another embodiment of the present invention;
Fig. 5 shows a kind of schematic diagram of data processing method based on ssd equipment of the embodiment of the present invention;
Fig. 6 shows the instruction format schematic diagram of data access instruction in the embodiment of the present invention.
Specific embodiment
It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although showing the disclosure in accompanying drawing
Exemplary embodiment it being understood, however, that may be realized in various forms the disclosure and should not be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to be able to be best understood from the disclosure, and can be by the scope of the present disclosure
Complete conveys to those skilled in the art.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " " used herein, "
Individual ", " described " and " being somebody's turn to do " may also comprise plural form.It is to be further understood that arranging used in the description of the present invention
Diction " inclusion " refers to there is described feature, integer, step, operation, element and/or assembly, but it is not excluded that existing or adding
Other features one or more, integer, step, operation, element, assembly and/or their group.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (include technology art
Language and scientific terminology), there is the general understanding identical meaning with the those of ordinary skill in art of the present invention.Also should
Be understood by, those terms defined in such as general dictionary it should be understood that have with the context of prior art in
The consistent meaning of meaning, and unless by specific definitions, otherwise will not be explained with idealization or excessively formal implication.
Fig. 2 diagrammatically illustrates the structural representation of the ssd unit of one embodiment of the invention.With reference to Fig. 2, the present invention is real
Apply the ssd unit of example, the storage medium 20 controlled including main control chip 10 and by described main control chip, described main control chip 10
It is provided with two pci-e interfaces, respectively principal and subordinate's chip coffret pcie root and from master chip coffret
Pcieendpoint, described principal and subordinate chip coffret pcie root are by the master of described main control chip 10 and subordinate's ssd unit
The interface that control chip connects, described from master chip coffret pcie endpoint be by described main control chip 10 and higher level ssd
The main control chip of unit or the interface of main frame connection.
Wherein, the main frame host in the present embodiment is pc machine or server.
Wherein, two pci-e interfaces in the present embodiment can be arranged on same side or the distribution of described main control chip
Not ipsilateral in described main control chip.
In the present embodiment, by two pci-e interfaces arranging for main control chip 10 so that multiple ssd unit can lead to
The mode crossing master and slave concatenation is extended, and not only achieves the capacity extension of ssd equipment, and can reduce main frame host side
Complex management degree and cpu expense.
In the present embodiment, storage medium 20 can be realized using flash chip or dram chip.
In the present embodiment, described pci-e is pci-e x4 or pci-e x8 interface.
Fig. 3 diagrammatically illustrates the structural representation of the ssd equipment of one embodiment of the invention.With reference to Fig. 3, the present invention is real
Apply the ssd equipment of example, including the ssd unit described at least two as above any embodiment, respectively based on ssd unit and at least
Individual from ssd unit;
The ssd passing through pci-e bus and main frame from master chip coffret pcie endpoint of described main ssd unit
Slot connects, and the principal and subordinate chip coffret pcie root of described main ssd unit passes through pci-e bus with one from ssd unit
Connect from master chip coffret pcie endpoint, to realize main frame and main ssd unit by way of concatenation, and
Main ssd unit and the data communication between ssd unit.
In the present embodiment, described main ssd unit from master chip coffret pcie endpoint adopt pci-e x4 or
Pci-e x8 interface and the connection of described main frame.
In the present embodiment, the principal and subordinate chip coffret pcie root of described main ssd unit adopts pci-e x4 or pci-
E x8 interface is connected from master chip coffret pcie endpoint from ssd unit with described.
In an alternate embodiment of the present invention where, with reference to Fig. 4, ssd equipment includes three-level ssd unit, wherein, main ssd
Being connected with the ssd slot of main frame by pci-e bus from master chip coffret pcie endpoint of unit, to realize leading
Data communication between machine and main ssd unit;The principal and subordinate chip coffret pcie root of described main ssd unit passes through pci-e
Bus is connected from master chip coffret pcie endpoint from ssd unit with one, with realize main ssd unit with from ssd
Data communication between unit, should pass through pci-e bus and the 3rd from the principal and subordinate chip coffret pcie root of ssd unit
Ssd unit from master chip coffret pcie endpoint connect, with realize between ssd unit and the 3rd ssd unit
Data communication.
In this embodiment, when carrying out the extension of third level ssd unit, then can be used as the 3rd ssd unit from ssd unit
Main ssd unit, realize the data transfer between principal and subordinate's ssd unit.The embodiment of the present invention, by multistage ssd unit concatenation
Mode carries out ssd device extension, not only achieves capacity extension, and, host only needs to main ssd unit communication, no
Complex management degree and the cpu expense of host side only can be reduced.And, compared to existing by pcie switch chip
Extended mode, also has saved the cost of pcie switch chip.
It should be noted that the concrete structure of the ssd equipment of above-described embodiment proposition, it is only used for technical solution of the present invention
Carry out exemplary explanation, not to this programme limit it is possible to understand that, in practical application scene, it is right to be based on
The demand of memory capacity, the thought according to technical solution of the present invention carries out the other extension of more stages to ssd equipment.
Fig. 5 shows a kind of schematic diagram of data processing method based on ssd equipment of the embodiment of the present invention.This programme is
Realized based on the ssd equipment described in any of the above-described embodiment, specifically realized by the main control chip of ssd unit main in ssd equipment.
With reference to Fig. 5, provided in an embodiment of the present invention following steps are specifically included based on the data processing method of ssd equipment:
The data access instruction that step s11, Receiving Host send, carries action type mark in described data access instruction
Know and LBA lba;
Step s12, determine whether the address realm indicated by described lba belongs to the main control chip institute of described main ssd unit
The storage medium controlling, if so, then execution step s13, otherwise, execution step s14;
Step s13, corresponding data access process is carried out to main ssd unit according to described action type mark, to described
Main frame sends instruction and completes to respond;
Step s14, by described data access instruction be sent to described from ssd unit, for described from ssd unit according to institute
State action type mark and carry out corresponding data access process to from ssd unit, and returned data processes and completes response signal;
Step s15, receive described complete response signal from the data processing that ssd unit returns after, to described main frame
Send instruction to complete to respond.
Data processing method based on ssd equipment provided in an embodiment of the present invention, is set by the main control chip in ssd unit
Put two pci-e interfaces, i.e. principal and subordinate's chip coffret pcie root and from master chip coffret pcie endpoint, will
At least two ssd units are attached so that ssd unit can be realized by way of master and slave concatenation by way of concatenation
The capacity extension of ssd equipment, and host complex management degree and cpu expense can be reduced, also can save pcie simultaneously
The cost of switch chip.
In the present embodiment, when action type is designated write operation,
Described mark according to described action type carries out corresponding data access process to main ssd unit, comprising: will wait to locate
Reason data writes the storage medium that the main control chip of described main ssd unit is controlled;
Described by data access instruction be sent to described from ssd unit, for described from ssd unit according to described operation class
Type mark carries out corresponding data access process to from ssd unit, comprising: by described data access instruction be sent to described from
Described pending data is write the storage being controlled from the main control chip of ssd unit for described from ssd unit by ssd unit
Medium, and return write-back to main ssd unit and complete response signal.
In the present embodiment, when action type is designated read operation,
Described mark according to described action type carries out corresponding data access process to main ssd unit, comprising: according to institute
State the address realm indicated by lba and read data from the storage medium that the main control chip of described main ssd unit is controlled;
Described by data access instruction be sent to described from ssd unit, for described from ssd unit according to described operation class
Type mark carries out corresponding data access process to from ssd unit, comprising:
By described data access instruction be sent to described from ssd unit, for described from ssd unit according to described lba institute
The storage medium being controlled from the main control chip of ssd unit described in the address realm reading indicating, and the data being read is sent out
Deliver to described main ssd unit, by described main ssd unit by the data is activation being read to described main frame.
Below so that the action type in data access instruction is designated write operation as a example, technical solution of the present invention is carried out
Illustrate.
When host needs ssd equipment is carried out i/o access, host issues data access instruction to the master of main ssd unit
Control chip, specific instruction form is as shown in Figure 6.Action type mark opcode and logical block ground is carried in data access instruction
Location lba, wherein, part field is unrelated with the technical program, so omitting.
Specifically, the main control chip of main ssd unit needs to be judged this lba, judges the address realm indicated by lba
The span of control belonging to the main control chip of main ssd unit still falls within the span of control of the main control chip from ssd unit, if belonged to
In the span of control of the main control chip of main ssd unit, then directly the corresponding data of this instruction is stored in the master control of main ssd unit
In the storage medium that chip is locally managed, if belonging to the span of control of the main control chip from ssd unit, need start from
Ssd unit, is forwarded to all fields of data access instruction from ssd unit, to transfer at the main control chip of ssd unit
Reason.Because a write order may carry multiple lba, so needing the corresponding main control chip of master and slave ssd unit each to complete
Corresponding task is processed, and treats that from ssd unit, task being processed the signal completing is returned to main ssd unit, main ssd unit could incite somebody to action
The signal return that this task completes, to host, represents that this write order has been completely written in storage medium.
It should be noted that read operation order is also similar to, differing only in read command needs first either from master
The local data of ssd unit also comes from passing through between main control chip and the host of main ssd unit from the data of ssd unit
Pcie passage be sent to host, then could send instruction and complete response signal to host.
Below the practical application scene of technical solution of the present invention is illustrated:
1) pcie ssd has been inserted with server/pc and when groove position not extends and needed newly-increased memory capacity again.
2) nonstandard server/pc upper pcie groove interdigit space is very big, and commonly even nonstandard pcie ssd also cannot fill up
Space, can be with this technology come dilatation.
Below in conjunction with the accompanying drawings the operation principle of ssd unit main control chip master and slave in technical solution of the present invention is done further
Detailed description.
To the data transfer flow process from ssd unit main control chip, it is described as follows main ssd unit main control chip:
Step 0: the moderator wheel of main ssd unit main control chip has gone to needs and sent data to from ssd unit master control core
The passage of piece;
Step 1: main ssd unit main control chip send data sending request to from ssd unit main control chip so that from ssd
Unit main control chip knows that main ssd unit has data to want to be sent to from ssd unit;
Step 2: collect the transmission request of data that main ssd unit main control chip is sent from ssd unit main control chip;
Step 3: from ssd unit main control chip, the transmission request of data coming from main ssd unit main control chip is stored in and posts
Storage;
Step 4: when the moderator wheel from ssd unit main control chip goes to corresponding passage, send and obtain request of data
To main ssd unit main control chip;
Step 5: main ssd unit main control chip by data and complete transmit order be sent to from ssd unit main control chip;
Step 6: be resident locally sram from the data of ssd unit main control chip in the future autonomous ssd unit main control chip;
Step 7: be sent completely interruption to main ssd unit main control chip;
Step 8: main ssd unit main control chip receives interruption, completes main ssd unit main control chip to from ssd unit master control
The data transfer of chip.
From ssd unit main control chip to the data transfer flow process of main ssd unit main control chip, it is described as follows:
Step 0: going to certain from ssd unit main control chip moderator wheel needs to send data to main ssd unit master control core
The passage of piece, and initialize transmission flow;
Step 1: send sram status checkout from ssd unit main control chip and instruct to main ssd unit main control chip;
Step 2: main ssd unit main control chip accepts sram status checkout and instructs and process;
Step 3: main ssd unit main control chip sends sram state to from ssd unit main control chip;
Step 4: accept the sram state of main ssd unit main control chip from ssd unit main control chip;
Step 5: transfer data to main ssd unit main control chip, wherein, each maximum data from ssd unit main control chip
It is transmitted as 4kbyte;
Step 6: main ssd unit main control chip receives data and is stored to sram;
Step 7: send interrupts to main ssd unit main control chip from ssd unit main control chip;
Step 8: main ssd unit main control chip processes and interrupts, and completes data transfer.
Ssd unit provided in an embodiment of the present invention, ssd equipment and the data processing method based on ssd equipment, by
The main control chip of ssd unit arranges two pci-e interfaces, respectively principal and subordinate's chip coffret pcie root and from master chip
Coffret pcie endpoint, principal and subordinate chip coffret pcie root are by described main control chip and subordinate's ssd unit
The interface that connects of main control chip, be will be mono- to described main control chip and higher level ssd from master chip coffret pcie endpoint
The interface of the main control chip of unit or main frame connection is so that ssd unit can realize ssd equipment by way of master and slave concatenation
Capacity extension, and host complex management degree and cpu expense can be reduced, also can save pcie switch chip simultaneously
Cost.
In description mentioned herein, illustrate a large amount of details.It is to be appreciated, however, that the enforcement of the present invention
Example can be put into practice in the case of not having these details.In some instances, known method, structure are not been shown in detail
And technology, so as not to obscure the understanding of this description.
Similarly it will be appreciated that in order to simplify the disclosure and help understand one or more of each inventive aspect,
Above in the description to the exemplary embodiment of the present invention, each feature of the present invention is grouped together into single enforcement sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect an intention that i.e. required guarantor
The application claims of shield more features than the feature being expressly recited in each claim.More precisely, it is such as following
Claims reflected as, inventive aspect is all features less than single embodiment disclosed above.Therefore,
The claims following specific embodiment are thus expressly incorporated in this specific embodiment, wherein each claim itself
All as the separate embodiments of the present invention.
Although additionally, it will be appreciated by those of skill in the art that some embodiments in this include institute in other embodiments
Including some features rather than further feature, but the combination of the feature of different embodiment means to be in the scope of the present invention
Within and form different embodiments.For example, in the following claims, embodiment required for protection any it
One can in any combination mode using.
Finally it is noted that above example, only in order to technical scheme to be described, is not intended to limit;Although
With reference to the foregoing embodiments the present invention is described in detail, it will be understood by those within the art that: it still may be used
To modify to the technical scheme described in foregoing embodiments, or equivalent is carried out to wherein some technical characteristics;
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (10)
1. a kind of ssd unit is it is characterised in that include main control chip and the storage medium being controlled by described main control chip, institute
State main control chip and be provided with two pci-e interfaces, respectively principal and subordinate's chip coffret pcie root and connecing from master chip transmission
Mouthful pcie endpoint, described pcie root are by described main control chip and connecing that the main control chip of subordinate ssd unit is connected
Mouthful, described pcie endpoint is the interface being connected described main control chip with main control chip or the main frame of higher level's ssd unit.
2. ssd unit according to claim 1 is it is characterised in that described two pci-e interface is arranged on described master control core
The same side of piece or the not ipsilateral being distributed in described main control chip.
3. ssd unit according to claim 1 and 2 is it is characterised in that described pci-e is pci-e x4 or pci-e x8
Interface.
4. a kind of ssd equipment, it is characterised in that including at least two ssd units as described in any one of claim 1-3, divides
Based on not ssd unit and at least one from ssd unit;
The pcie endpoint of described main ssd unit is connected with the ssd slot of main frame by pci-e bus, and described main ssd is mono-
The pcie root of unit is connected from the pcie endpoint of ssd unit with one by pci-e bus, by by way of concatenation
Realize main frame and main ssd unit, and main ssd unit and the data communication between ssd unit.
5. ssd equipment according to claim 4 is it is characterised in that the pcie endpoint of described main ssd unit adopts
Pci-e x4 or the connection of pci-e x8 interface and described main frame.
6. ssd equipment according to claim 4 is it is characterised in that the pcie root of described main ssd unit adopts pci-e
X4 or pci-e x8 interface is connected from the pcie endpoint of ssd unit with described.
7. the ssd equipment according to any one of claim 4-6 is it is characterised in that the described pcie root from ssd unit
Be connected with the pcie endpoint of the 3rd ssd unit by pci-e bus, with realize from ssd unit and the 3rd ssd unit it
Between data communication.
8. a kind of data processing method based on the ssd equipment as described in any one of claim 4-7 is it is characterised in that include:
The data access instruction that Receiving Host sends, carries action type mark and logical block ground in described data access instruction
Location lba;
Determine whether the address realm indicated by described lba belongs to storage Jie that the main control chip of described main ssd unit is controlled
Matter;
If so, then corresponding data access process is carried out to main ssd unit according to described action type mark;
Otherwise, by described data access instruction be sent to described from ssd unit, for described from ssd unit according to described operation
Type identification carries out corresponding data access process to from ssd unit, and returned data processes and completes response signal;
After completing response signal from the data processing that ssd unit returns described in receiving, send instruction to described main frame and complete
Response.
9. method according to claim 8 is it is characterised in that when described action type is designated write operation,
Described mark according to described action type carries out corresponding data access process to main ssd unit, comprising: by pending number
The storage medium being controlled according to the main control chip writing described main ssd unit;
Described by data access instruction be sent to described from ssd unit, for described from ssd unit according to described action type mark
Know and carry out corresponding data access process to from ssd unit, comprising: described data access instruction is sent to described mono- from ssd
Described pending data is write the storage medium being controlled from the main control chip of ssd unit for described from ssd unit by unit,
And return write-back to main ssd unit and complete response signal.
10. method according to claim 8 is it is characterised in that when described action type is designated read operation,
Described mark according to described action type carries out corresponding data access process to main ssd unit, comprising: according to described
Address realm indicated by lba reads data from the storage medium that the main control chip of described main ssd unit is controlled;
Described by data access instruction be sent to described from ssd unit, for described from ssd unit according to described action type mark
Know and carry out corresponding data access process to from ssd unit, comprising:
By described data access instruction be sent to described from ssd unit, for described from ssd unit according to indicated by described lba
Address realm read described in the storage medium that controlled from the main control chip of ssd unit, and the data is activation being read is arrived
Described main ssd unit, by described main ssd unit by the data is activation being read to described main frame.
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