CN107688376A - A kind of hard disk backboard for supporting adaptive hard-disk interface - Google Patents
A kind of hard disk backboard for supporting adaptive hard-disk interface Download PDFInfo
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- CN107688376A CN107688376A CN201710898201.1A CN201710898201A CN107688376A CN 107688376 A CN107688376 A CN 107688376A CN 201710898201 A CN201710898201 A CN 201710898201A CN 107688376 A CN107688376 A CN 107688376A
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
- G06F13/4081—Live connection to bus, e.g. hot-plugging
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
The present invention provides a kind of hard disk backboard for supporting adaptive hard-disk interface, including hard-disk interface, and hard-disk interface is connected with SATA interface, PCIE interfaces, CPLD, buffer module, I2C extension controlled modules and disk state I2C protocol conversion modules；I2C extensions controlled module is also associated with I2C buses, and I2C buses are also associated with the first I2C interface and temperature sensor, and I2C buses are also connected with disk state I2C protocol conversion modules and CPLD；Buffer module is also connected with CPLD and PCIE interfaces；I2C extensions controlled module is also connected with CPLD；CPLD is also associated with the second I2C interface, SGPIO interfaces, mistake indicator lamp, indicator lamp in place and movable indicator lamp；SATA interface is connected with South Bridge chip PCH, PCIE interface and is connected with CPU, and the first I2C interface is connected with BMC, and the second I2C interface is connected with CPU.
Description
Technical field
The invention belongs to hard disk backboard field, and in particular to a kind of hard disk backboard for supporting adaptive hard-disk interface.
Background technology
The preposition hard disk current main-stream hard disk of server is SATA and SAS hard disks and SSD, but due to NVME SSD hard disk valencys
Lattice are expensive, and popularization is limited, and each manufacturer server produces hard disk backboard to support based on SATA and SAS hard disks, with clothes
The fast development for device industry of being engaged in, NVME hard disks are with its lower delay, higher transmission performance, lower power consumption control, constantly
Evolve, from high-end to main flow, demand is increasing, and under the premise of the increasing market of NVME hard disks, old backboard can not
Meet actual demand.
This is the deficiencies in the prior art, therefore, for drawbacks described above of the prior art, there is provided one kind is supported adaptive hard
The hard disk backboard of disk interface, is necessary.
The content of the invention
It is an object of the present invention to the defects of can not meeting actual demand for above-mentioned old hard disk backboard, there is provided a kind of
The hard disk backboard of adaptive hard-disk interface is supported, to solve above-mentioned technical problem.
To achieve the above object, the present invention provides following technical scheme：
A kind of hard disk backboard for supporting adaptive hard-disk interface, including hard-disk interface, hard-disk interface are connected with SATA interface, PCIE
Interface, CPLD, buffer module, I2C bus extensions controlled module and disk state I2C protocol conversion modules；
I2C bus extension controlled modules are also associated with the first I2C buses, and the first I2C buses are also associated with the first I2C interface and temperature
Sensor is spent, the first I2C buses are also connected with disk state I2C protocol conversion modules and CPLD；
Buffer module is also connected with CPLD and PCIE interfaces；
I2C bus extension controlled modules are also connected with CPLD；
CPLD is also associated with the second I2C interface, SGPIO interfaces, Hard disk error indicator lamp, hard disk indicator lamp in place and hard disk and lived
Dynamic indicator lamp；
SATA interface is also associated with South Bridge chip PCH, PCIE interface and is also associated with CPU, and the first I2C interface is also associated with BMC, the
Two I2C interfaces are also connected with CPU.
Further, I2C bus extensions controlled module includes I2C bus extensions unit and I2C bus slave units；I2C
Bus extension unit connects the first I2C buses, I2C bus slaves unit connection I2C bus extensions unit, hard-disk interface and
CPLD。
Further, hard-disk interface includes hard disk information port in place and Hard disk error information port, hard disk information in place
Port and Hard disk error information port are connected with CPLD.Hard-disk interface hard disk hot-plug support function.
Further, in addition to external power interface, external power interface are connected with power transfer module, CPLD connections electricity
Source modular converter.CPLD can also connect the power supply of hard disk power supply, and external power interface can meet 5V or 12V, power transfer module it is defeated
It is 3.3V to go out voltage.
Further, the quantity of hard-disk interface is 4, and the quantity of SATA interface is 4, and the quantity of PCIE interfaces is 4,
The quantity of buffer module is 4, and the quantity of Hard disk error indicator lamp is 4, and the quantity of hard disk positioning light is 4, hard disk
The quantity of movable indicator lamp is 4.
Further, hard disk backboard includes the first side, the second side, the 3rd side, the 4th side, front and the back side；
Four hard-disk interfaces are uniformly arranged on positive 4th side of hard disk backboard and parallel with the 4th side；
It is close to the position of the first side and the second side and parallel with the second side that first PCIE interfaces are arranged on the hard disk backboard back side, and first
SATA interface is arranged on the hard disk backboard back side close to the position of the first PCIE interfaces and the second side and parallel with the second side；
3rd SATA interface is arranged on the center at the hard disk backboard back side, and parallel with the second side；
3rd PCIE interfaces are arranged on the hard disk backboard back side from three side to close to the position of the 3rd SATA interface, and with second
Side is vertical；
2nd PCIE interfaces are arranged on the hard disk backboard back side from the first side direction close to the position of the 3rd SATA interface, and with second
Side is vertical；
Second SATA interface is arranged on the position among the first SATA interface and the 3rd SATA interface, and vertical with the second side；
4th SATA interface is arranged on the hard disk backboard back side close to the position of the 3rd side and the second side and parallel with the second side, and the 4th
PCIE interfaces are positioned close to the position of the 4th SATA interface and the second side and vertical with the second side.
Further, hard-disk interface uses the hard disk connector of SFF-8639 models, and PCIE interfaces are using support PCIEX4
The optical fiber copper connectors OCUlink of signal.
Further, CPLD uses the CPLD chips of LCMXO2-1200 models, and disk state I2C protocol conversion modules are adopted
With the chip of TCA6408 models.
Further, I2C bus extensions unit uses the I2C bus extension chips of PCA9546 models；I2C bus slaves
Unit uses the chip of 74LV3162 models.
Further, disk state I2C protocol conversion modules and CPLD are used to judge whether hard-disk interface has hard disk insertion
And the hard disk type of insertion；
When judge to have hard disk to insert and the hard disk type of insertion as NVME hard disks when,
The type of disk state I2C protocol conversion modules notice BMC hard disks is NVME hard disks, and BMC notice CPU connect with PCIE interfaces
Connect, CPU passes through the second I2C interface and the movable indicator lamp of CPLD Control on Communication NVME hard disks；
CPLD control I2C bus extensions controlled modules are opened, and BMC communicates unlatching with the I2C of hard-disk interface；
CPLD control buffer modules are opened, and the communication of PCIE interfaces and hard-disk interface is opened；
The indicator lamp in place of wrong indicator lamp and the NVME hard disk of CPLD control NVME hard disks；
When judge to have hard disk to insert and the hard disk type of insertion as SAS or SATA hard disc when,
The type of disk state I2C protocol conversion modules notice BMC hard disks is SAS or SATA hard disc, and BMC notifies PCH and SATA
Interface connects, and PCH passes through SGPIO interfaces and CPLD Control on Communication SAS or the movable indicator lamp of SATA hard disc；
CPLD controls the indicator lamp in place of SAS or wrong indicator lamp and SAS or the SATAE hard disk of SATA hard disc.
The beneficial effects of the present invention are：
The present invention can meet the needs of system is to NVME, SAS and SATA different type hard disk, realize point of the server to hard disk
Lamp demand, support the wrong indicator lamp, indicator lamp in place and movable indicator lamp of hard disk.
In addition, design principle of the present invention is reliable, and it is simple in construction, there is very extensive application prospect.
As can be seen here, the present invention is compared with prior art, with prominent substantive distinguishing features and significantly progressive, its implementation
Beneficial effect be also obvious.
Brief description of the drawings
Fig. 1 is connection diagram of the present invention；
Fig. 2 is connection diagram of the embodiment of the present invention；
Fig. 3 is positive structure schematic one of the present invention；
Fig. 4 is structure schematic diagram two of the present invention；
Wherein, 1- hard-disk interfaces；The hard-disk interfaces of 1.1- first；The hard-disk interfaces of 1.2- second；The hard-disk interfaces of 1.3- the 3rd；1.4- the
Four hard-disk interfaces；2-SATA interfaces；The SATA interfaces of 2.1- first；The SATA interfaces of 2.2- second；The SATA interfaces of 2.3- the 3rd；2.4-
4th SATA interface；3-PCIE interfaces；The PCIE interfaces of 3.1- the first；The PCIE interfaces of 3.2- the 2nd；The PCIE interfaces of 3.3- the 3rd；
The PCIE interfaces of 3.4- the 4th；4-CPLD；5- buffer modules；The buffer modules of 5.1- first；The buffer modules of 5.2- second；5.3- the 3rd
Buffer module；The buffer modules of 5.4- the 4th；6-I2C extends controlled module；6.1-I2C bus extension units；6.2.1- the first I2C
Bus slave unit；6.2.2- the 2nd I2C bus slave units；7- disk state I2C protocol conversion modules；The I2C of 8- the first connect
Mouthful；9- temperature sensors；The I2C interfaces of 10- second；11-SGPIO interfaces；12- Hard disk error indicator lamps；13- hard disks indicate in place
Lamp；14- hard disk movable indicator lamps；15-PCH；16-CPU；17-BMC；A.1- the side of hard disk backboard first；A.2- hard disk backboard
Two sides；A.3- the side of hard disk backboard the 3rd；A.4- the side of hard disk backboard the 4th.
Embodiment：
To enable the purpose of the present invention, feature, advantage more obvious and understandable, below in conjunction with this specific embodiment
Accompanying drawing, the technical scheme in the present invention is clearly and completely described.
As shown in figure 1, the present invention provides a kind of hard disk backboard for supporting adaptive hard-disk interface, including hard-disk interface 1, firmly
Disk interface is connected with SATA interface 2, PCIE interfaces 3, CPLD 4, buffer module 5, I2C bus extensions controlled module 6 and hard disk
State I 2C protocol conversion modules 7；
I2C bus extension controlled modules are also associated with the first I2C buses, and the first I2C buses are also associated with the He of the first I2C interface 8
Temperature sensor 9, the first I2C buses are also connected with disk state I2C protocol conversion modules 7 and CPLD 4；
Buffer module 5 is also connected with CPLD 4 and PCIE interfaces 3；
I2C bus extensions controlled module 6 is also connected with CPLD 4；
CPLD 4 is also associated with the second I2C interface 10, SGPIO interfaces 11, Hard disk error indicator lamp 12, hard disk indicator lamp 13 in place
And hard disk movable indicator lamp 14；
SATA interface 2 is also associated with South Bridge chip PCH 15, and PCIE interfaces 3 are also associated with CPU 16, and the first I2C interface 9 also connects
BMC 17 is connected to, the second I2C interface 10 is also connected with CPU 16.
As shown in Fig. 2 the quantity of the hard-disk interface 1 in above-described embodiment is 4, and the first hard-disk interface 1.1, the second hard disk
Interface 1.2, the 3rd hard-disk interface 1.3 and the 4th hard-disk interface 1.4, the quantity of SATA interface 2 is 4, the first SATA interface
2.1, the second SATA interface 2.2, the 3rd SATA interface 2.3 and the 4th SATA interface 2.4, the quantity of PCIE interfaces 3 is 4,
First PCIE interfaces 3.1, the 2nd PCIE interfaces 3.2, the 3rd PCIE interfaces 3.3 and the 4th PCIE interfaces 3.4, buffer module 4
Quantity be 4, the first buffer module 4.1, the second buffer module 4.2, the 3rd buffer module 4.3 and the 4th buffer module
4.4；I2C bus extensions controlled module 6 includes I2C bus extensions unit 6.1, the first I2C bus slave unit 6.2.1 and second
I2C bus slave units 6.2.2；
First hard-disk interface 1.1 and the first SATA interface 2.1, the first PCIE interfaces 3.1, the first buffer module 5.1, the first I2C
Bus slave unit 6.2.1, CPLD 4 and disk state I2C protocol conversion modules 7 connect,
First buffer module 5.1 is also connected with the PCIE interfaces 3.1 of CPLD 4 and the first；
Second hard-disk interface 1.2 and the second SATA interface 2.2, the 2nd PCIE interfaces 3.2, the second buffer module 5.2, the first I2C
Bus slave unit 6.2.1, CPLD 4 and disk state I2C protocol conversion modules 7 connect,
Second buffer module 5.2 is also connected with the PCIE interfaces 3.2 of CPLD 4 and the 2nd；
3rd hard-disk interface 1.3 and the 3rd SATA interface 2.3, the 3rd PCIE interfaces 3.3, the 3rd buffer module 5.3, the 2nd I2C
Bus slave unit 6.2.2, CPLD 4 and disk state I2C protocol conversion modules 7 connect,
3rd buffer module 5.3 is also connected with the PCIE interfaces 3.3 of CPLD 4 and the 3rd；
4th hard-disk interface 1.4 and the 4th SATA interface 2.4, the 4th PCIE interfaces 3.4, the 4th buffer module 5.4, the 2nd I2C
Bus slave unit 6.2.2, CPLD 4 and disk state I2C protocol conversion modules 7 connect,
4th buffer module 5.4 is also connected with the PCIE interfaces 3.4 of CPLD 4 and the 4th；
First I2C bus slave unit 6.2.1 connection I2C bus extensions unit 6.1 and CPLD 4, the 2nd I2C bus slave lists
First 6.2.2 connections I2C bus extensions unit 6.1 and CPLD 4, I2C bus extension unit 6.1 connect the first I2C buses；
The quantity of Hard disk error indicator lamp is also 4, and the quantity of hard disk positioning light is 4, the number of hard disk movable indicator lamp
Measure as 4, corresponding to each Hard disk error indicator lamp, each hard disk positioning light and the instruction of each hard disk movable indicator lamp
The state of hard disk；
Hard-disk interface includes hard disk information port in place and Hard disk error information port, hard disk information port in place and Hard disk error
Information port is connected with CPLD；
Backboard also includes external power interface, and external power interface is connected with power transfer module, CPLD connection Power convert moulds
Block.CPLD can also connect the power supply of hard disk power supply, and external power interface can meet 5V or 12V, and the output voltage of power transfer module is
3.3V；
As shown in Figure 3 and Figure 4, hard disk backboard include the first side A.1, the second side A.2, the 3rd side A.3, the 4th side A.4, front with
And the back side；
Four hard-disk interfaces, the first hard-disk interface 1.1, the second hard-disk interface 1.2, the 3rd hard-disk interface 1.3 and the 4th hard disk connect
It is A.4 and A.4 parallel with the 4th side that mouth 1.4 is uniformly arranged on positive 4th side of hard disk backboard；
First PCIE interfaces 3.1 be arranged on the hard disk backboard back side close to the first side A.1 with the second side position A.2 and with the second side
A.2 parallel, the first SATA interface 2.1 is arranged on the position of the hard disk backboard back side close to the first PCIE interfaces 3.1 and the second side A.2
It is and A.2 parallel with the second side；
3rd SATA interface 2.3 is arranged on the center at the hard disk backboard back side, and A.2 parallel with the second side；
3rd PCIE interfaces 3.3 be arranged on the hard disk backboard back side from the 3rd side A.3 direction close to the position of the 3rd SATA interface 2.3
Put, and it is A.2 vertical with the second side；
2nd PCIE interfaces 3.2 be arranged on the hard disk backboard back side from the first side A.1 direction close to the position of the 3rd SATA interface 2.3
Put, and it is A.2 vertical with the second side；
Second SATA interface 2.2 is arranged on the position among the first SATA interface 2.1 and the 3rd SATA interface 2.3, and with second
Side is A.2 vertical；
4th SATA interface 2.4 be arranged on the hard disk backboard back side close to the 3rd side A.3 with the second side position A.2 and with the second side
A.2 it is parallel, the 4th PCIE interfaces 3.4 be positioned close to the 4th SATA interface 2.4 and the second side position A.2 and with the second side
A.2 it is vertical；
First hard-disk interface 1.1, the second hard-disk interface 1.2, the 3rd hard-disk interface 1.3, the 4th hard-disk interface 1.4 use SFF-
The hard disk connector of 8639 models, the first PCIE interfaces 3.1, the 2nd PCIE interfaces 3.2, the 3rd PCIE interfaces 3.3, the 4th PCIE
Interface 3.4 is using the optical fiber copper connectors OCUlink for supporting PCIEX4 signals；
CPLD uses the CPLD chips of LCMXO2-1200 models, and disk state I2C protocol conversion modules use TCA6408 models
Chip；
I2C bus extensions unit uses the I2C bus extension chips of PCA9546 models；First I2C bus slaves unit and second
I2C bus slaves unit uses the chip of 74LV3162 models.
Disk state I2C protocol conversion modules and CPLD are used to judge whether hard-disk interface has hard disk to insert and insert hard
Disc-type；
When judge to have hard disk to insert and the hard disk type of insertion as NVME hard disks when,
The type of disk state I2C protocol conversion modules notice BMC hard disks is NVME hard disks, and BMC notice CPU connect with PCIE interfaces
Connect, CPU passes through the second I2C interface and the movable indicator lamp of CPLD Control on Communication NVME hard disks；
CPLD control I2C bus extensions controlled modules are opened, and BMC communicates unlatching with the I2C of hard-disk interface；
CPLD control buffer modules are opened, and the communication of PCIE interfaces and hard-disk interface is opened；
The indicator lamp in place of wrong indicator lamp and the NVME hard disk of CPLD control NVME hard disks；
When judge to have hard disk to insert and the hard disk type of insertion as SAS or SATA hard disc when,
The type of disk state I2C protocol conversion modules notice BMC hard disks is SAS or SATA hard disc, and BMC notifies PCH and SATA
Interface connects, and PCH passes through SGPIO interfaces and CPLD Control on Communication SAS or the movable indicator lamp of SATA hard disc；
CPLD controls the indicator lamp in place of SAS or wrong indicator lamp and SAS or the SATAE hard disk of SATA hard disc.
In 2U servers, by the composition of backboards of 3 above-mentioned four hard-disk interfaces, meet 12 hard disk demands, and can root
Different types of hard disk is selected according to actual demand.
SATA interface, it is Serial ATA abbreviation, is a kind of computer bus, major function is used as mainboard and largely deposited
Store up equipment（Such as hard disk and CD drive）Between data transfer be used.ATA, AT AttachmentAT, embedded interface,
ATA is also referred to as ide interface.
OCuLink, Optical Copper Link, the link of fiber/copper cable.
CPLD, Complex Programmable Logic Device, CPLD.
BMC, Baseboard Management Controller, baseboard management controller.
Embodiments of the invention are illustrative and not restrictive, and above-described embodiment is only to aid in understanding the present invention, because
This is every by those skilled in the art's technique according to the invention the invention is not restricted to the embodiment described in embodiment
Other embodiments that scheme is drawn, also belong to the scope of protection of the invention.
Claims (10)
1. a kind of hard disk backboard for supporting adaptive hard-disk interface, it is characterised in that including hard-disk interface（1）, hard-disk interface company
It is connected to SATA interface（2）, PCIE interfaces（3）、CPLD（4）, buffer module（5）, I2C bus extension controlled modules（6）It is and hard
Plate-like state I2C protocol conversion modules（7）；
I2C bus extension controlled modules are also associated with the first I2C buses, and the first I2C buses are also associated with the first I2C interface（8）
And temperature sensor（9）, the first I2C buses also with disk state I2C protocol conversion modules（7）And CPLD（4）Connection；
Buffer module（5）Also with CPLD（4）With PCIE interfaces（3）Connection；
I2C bus extension controlled modules（6）Also with CPLD（4）Connection；
CPLD（4）It is also associated with the second I2C interface（10）, SGPIO interfaces（11）, Hard disk error indicator lamp（12）, hard disk it is in place
Indicator lamp（13）And hard disk movable indicator lamp（14）；
SATA interface（2）It is also associated with South Bridge chip PCH（15）, PCIE interfaces（3）It is also associated with CPU（16）, the first I2C interface
（9）It is also associated with BMC（17）, the second I2C interface（10）Also with CPU（16）Connection.
2. a kind of hard disk backboard for supporting adaptive hard-disk interface as claimed in claim 1, it is characterised in that I2C buses expand
Exhibition controlled module includes I2C bus extensions unit and I2C bus slave units；It is total that I2C bus extensions unit connects the first I2C
Line, I2C bus slaves unit connection I2C bus extensions unit, hard-disk interface and CPLD.
A kind of 3. hard disk backboard for supporting adaptive hard-disk interface as claimed in claim 1, it is characterised in that hard-disk interface bag
Include hard disk information port in place and Hard disk error information port, hard disk information port in place and Hard disk error information port with
CPLD connections.
4. a kind of hard disk backboard for supporting adaptive hard-disk interface as claimed in claim 1, it is characterised in that also include outside
Power interface, external power interface are connected with power transfer module, CPLD connection power transfer modules.
5. a kind of hard disk backboard for supporting adaptive hard-disk interface as claimed in claim 1, it is characterised in that hard-disk interface
Quantity is 4, and the quantity of SATA interface is 4, and the quantity of PCIE interfaces is 4, and the quantity of buffer module is 4, and hard disk is wrong
The quantity of indicator lamp is 4 by mistake, and the quantity of hard disk positioning light is 4, and the quantity of hard disk movable indicator lamp is 4.
A kind of 6. hard disk backboard for supporting adaptive hard-disk interface as stated in claim 5, it is characterised in that hard disk backboard bag
Include the first side（A.1）, the second side（A.2）, the 3rd side（A.3）, the 4th side（A.4）, front and the back side；
Four hard-disk interfaces are uniformly arranged on positive 4th side of hard disk backboard（A.4）And with the 4th side（A.4）It is parallel；
First PCIE interfaces（3.1）The hard disk backboard back side is arranged on close to the first side（A.1）With the second side（A.2）Position and with
Second side（A.2）It is parallel, the first SATA interface（2.1）The hard disk backboard back side is arranged on close to the first PCIE interfaces（3.1）With
Two sides（A.2）Position and with the second side（A.2）It is parallel；
3rd SATA interface（2.3）Be arranged on the center at the hard disk backboard back side, and with the second side（A.2）It is parallel；
3rd PCIE interfaces（3.3）The hard disk backboard back side is arranged on from the 3rd side（A.3）Direction is close to the 3rd SATA interface（2.3）
Position, and with the second side（A.2）Vertically；
2nd PCIE interfaces（3.2）The hard disk backboard back side is arranged on from the first side（A.1）Direction is close to the 3rd SATA interface（2.3）
Position, and with the second side（A.2）Vertically；
Second SATA interface（2.2）It is arranged on the first SATA interface（2.1）With the 3rd SATA interface（2.3）Middle position, and
With the second side（A.2）Vertically；
4th SATA interface（2.4）The hard disk backboard back side is arranged on close to the 3rd side（A.3）With the second side（A.2）Position and with
Second side（A.2）It is parallel, the 4th PCIE interfaces（3.4）It is positioned close to the 4th SATA interface（2.4）With the second side（A.2）Position
Put and with the second side（A.2）Vertically.
7. a kind of hard disk backboard for supporting adaptive hard-disk interface as claimed in claim 1, it is characterised in that hard-disk interface is adopted
With the hard disk connector of SFF-8639 models, PCIE interfaces are using the optical fiber copper connectors OCUlink for supporting PCIEX4 signals.
8. a kind of hard disk backboard for supporting adaptive hard-disk interface as claimed in claim 1, it is characterised in that CPLD is used
The CPLD chips of LCMXO2-1200 models, disk state I2C protocol conversion modules use the chip of TCA6408 models.
9. a kind of hard disk backboard for supporting adaptive hard-disk interface as claimed in claim 2, it is characterised in that I2C buses expand
Open up the I2C bus extension chips that unit uses PCA9546 models；I2C bus slaves unit uses the chip of 74LV3162 models.
A kind of 10. hard disk backboard for supporting adaptive hard-disk interface as claimed in claim 5, it is characterised in that disk state
I2C protocol conversion modules and CPLD are used for the hard disk type for judging whether hard-disk interface has hard disk to insert and insert；
When judge to have hard disk to insert and the hard disk type of insertion as NVME hard disks when,
The type of disk state I2C protocol conversion modules notice BMC hard disks is NVME hard disks, and BMC notice CPU connect with PCIE interfaces
Connect, CPU passes through the second I2C interface and the movable indicator lamp of CPLD Control on Communication NVME hard disks；
CPLD control I2C bus extensions controlled modules are opened, and BMC communicates unlatching with the I2C of hard-disk interface；
CPLD control buffer modules are opened, and the communication of PCIE interfaces and hard-disk interface is opened；
The indicator lamp in place of wrong indicator lamp and the NVME hard disk of CPLD control NVME hard disks；
When judge to have hard disk to insert and the hard disk type of insertion as SAS or SATA hard disc when,
The type of disk state I2C protocol conversion modules notice BMC hard disks is SAS or SATA hard disc, and BMC notifies PCH and SATA
Interface connects, and PCH passes through SGPIO interfaces and CPLD Control on Communication SAS or the movable indicator lamp of SATA hard disc；
CPLD controls the indicator lamp in place of SAS or wrong indicator lamp and SAS or the SATAE hard disk of SATA hard disc.
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