CN107688376A - A kind of hard disk backboard for supporting adaptive hard-disk interface - Google Patents

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

A hard disk backplane supporting adaptive hard disk interface

technical field

The invention belongs to the field of hard disk backplanes, and in particular relates to a hard disk backplane supporting self-adaptive hard disk interfaces.

Background technique

The current mainstream hard disks for front-end hard disks of servers are SATA and SAS hard disks and SSDs. However, due to the high price and limited popularity of NVME SSD hard disks, the hard disk backplanes produced by various server manufacturers mainly support SATA and SAS hard disks. With the rapid development of the server industry With the development of NVME hard disk, with its lower latency, higher transmission performance, and lower power consumption control, it is constantly evolving, from high-end to mainstream, and the demand is increasing. It has been unable to meet the actual needs.

This is the deficiency of the prior art. Therefore, it is very necessary to provide a hard disk backplane supporting an adaptive hard disk interface in view of the above-mentioned defects in the prior art.

Contents of the invention

The object of the present invention is to provide a hard disk backplane supporting an adaptive hard disk interface to solve the above technical problems, aiming at the defect that the above-mentioned old hard disk backplane cannot meet actual needs.

To achieve the above object, the present invention provides the following technical solutions:

A hard disk backplane supporting an adaptive hard disk interface, including a hard disk interface, the hard disk interface is connected with a SATA interface, a PCIE interface, a CPLD, a buffer module, an I2C bus extension controlled module, and a hard disk state I2C protocol conversion module;

The I2C bus extension controlled module is also connected with a first I2C bus, the first I2C bus is also connected with a first I2C interface and a temperature sensor, and the first I2C bus is also connected with the hard disk state I2C protocol conversion module and CPLD;

The buffer module is also connected with CPLD and PCIE interface;

I2C bus extension controlled module is also connected with CPLD;

CPLD is also connected with the second I2C interface, SGPIO interface, hard disk error indicator light, hard disk presence indicator light and hard disk activity indicator light;

The SATA interface is also connected to the south bridge chip PCH, the PCIE interface is also connected to the CPU, the first I2C interface is also connected to the BMC, and the second I2C interface is also connected to the CPU.

Further, the I2C bus expansion controlled module includes an I2C bus expansion unit and an I2C bus controlled unit; the I2C bus expansion unit is connected to the first I2C bus, and the I2C bus controlled unit is connected to the I2C bus expansion unit, the hard disk interface and the CPLD.

Further, the hard disk interface includes a hard disk presence information port and a hard disk error information port, both of which are connected to the CPLD. The hard disk interface supports hard disk hot swap function.

Further, it also includes an external power interface, the external power interface is connected to a power conversion module, and the CPLD is connected to the power conversion module. The CPLD can also be connected to the hard disk power supply for power supply, the external power supply interface can be connected to 5V or 12V, and the output voltage of the power conversion module is 3.3V.

Further, the number of hard disk interfaces is 4, the number of SATA interfaces is 4, the number of PCIE interfaces is 4, the number of buffer modules is 4, the number of hard disk error indicators is 4, and the number of hard disk positioning indicators is 4. The number is 4, and the number of hard disk activity indicators is 4.

Further, the hard disk backplane includes a first side, a second side, a third side, a fourth side, a front side and a back side;

The four hard disk interfaces are evenly arranged on the fourth side of the front of the hard disk backplane and parallel to the fourth side;

The first PCIE interface is arranged on the back of the hard disk backplane near the first side and the second side and parallel to the second side, and the first SATA interface is arranged on the back of the hard disk backplane near the first PCIE interface and the second side and is parallel to the second side. the second side is parallel;

The third SATA interface is set at the center of the back of the hard disk backplane and is parallel to the second side;

The third PCIE interface is set on the back of the hard disk backplane, close to the third SATA interface from the third side, and perpendicular to the second side;

The second PCIE interface is set on the back of the hard disk backplane, close to the third SATA interface from the first side, and perpendicular to the second side;

The second SATA interface is arranged in the middle of the first SATA interface and the third SATA interface, and is perpendicular to the second side;

The fourth SATA interface is set on the back of the hard disk backplane close to the third side and the second side and parallel to the second side, and the fourth PCIE interface is set close to the fourth SATA interface and the second side and perpendicular to the second side .

Further, the hard disk interface adopts a SFF-8639 type hard disk connector, and the PCIE interface adopts an optical fiber copper cable connector OCUlink that supports PCIEX4 signals.

Further, the CPLD adopts the CPLD chip of the LCMXO2-1200 model, and the I2C protocol conversion module of the hard disk state adopts the chip of the TCA6408 model.

Further, the I2C bus expansion unit adopts the PCA9546 type I2C bus expansion chip; the I2C bus controlled unit adopts the 74LV3162 type chip.

Further, the hard disk state I2C protocol conversion module and CPLD are used to judge whether the hard disk interface has a hard disk inserted and the inserted hard disk type;

When it is determined that a hard disk is inserted and the type of the inserted hard disk is an NVME hard disk,

The hard disk status I2C protocol conversion module notifies the BMC that the type of the hard disk is an NVME hard disk, and the BMC notifies the CPU to connect to the PCIE interface, and the CPU communicates with the CPLD through the second I2C interface to control the activity indicator of the NVME hard disk;

The CPLD controls the I2C bus expansion controlled module to open, and the I2C communication between the BMC and the hard disk interface is opened;

The CPLD controls the buffer module to open, and the communication between the PCIE interface and the hard disk interface is opened;

The CPLD controls the error indicator light of the NVME hard disk and the presence indicator light of the NVME hard disk;

When it is determined that a hard disk is inserted and the type of the inserted hard disk is a SAS or SATA hard disk,

Hard disk status I2C protocol conversion module informs BMC that the type of hard disk is SAS or SATA hard disk, BMC informs PCH to connect with SATA interface, and PCH communicates with CPLD through SGPIO interface to control the activity indicator light of SAS or SATA hard disk;

The CPLD controls the error indicator of the SAS or SATA hard disk and the presence indicator of the SAS or SATAE hard disk.

The beneficial effects of the present invention are:

The invention can meet the requirements of the system for different types of NVME, SAS and SATA hard disks, realize the server's lighting requirements for the hard disk, and support the error indicator light, presence indicator light and activity indicator light of the hard disk.

In addition, the design principle of the present invention is reliable, the structure is simple, and has very wide application prospects.

It can be seen that, compared with the prior art, the present invention has outstanding substantive features and remarkable progress, and the beneficial effects of its implementation are also obvious.

Description of drawings

Fig. 1 is the connection schematic diagram of the present invention;

Fig. 2 is the connection schematic diagram of the embodiment of the present invention;

Fig. 3 is a schematic view of the front structure of the present invention;

Fig. 4 is a schematic diagram of the back structure of the present invention II;

Among them, 1-hard disk interface; 1.1-first hard disk interface; 1.2-second hard disk interface; 1.3-third hard disk interface; 1.4-fourth hard disk interface; 2-SATA interface; 2.1-first SATA interface; 2.2-the first 2.3-third SATA interface; 2.4-fourth SATA interface; 3-PCIE interface; 3.1-first PCIE interface; 3.2-second PCIE interface; 3.3-third PCIE interface; 3.4-fourth PCIE interface ;4-CPLD; 5-buffer module; 5.1-first buffer module; 5.2-second buffer module; 5.3-third buffer module; 5.4-fourth buffer module; 6-I2C extended controlled module; 6.1-I2C bus Expansion unit; 6.2.1-first I2C bus controlled unit; 6.2.2-second I2C bus controlled unit; 7-hard disk status I2C protocol conversion module; 8-first I2C interface; 9-temperature sensor; 10- The second I2C interface; 11-SGPIO interface; 12-hard disk error indicator; 13-hard disk presence indicator; 14-hard disk activity indicator; 15-PCH; 16-CPU; 17-BMC; A.1-hard disk back The first side of the board; A.2- the second side of the hard disk backplane; A.3- the third side of the hard disk backplane; A.4- the fourth side of the hard disk backplane.

detailed description:

In order to make the purpose, features, and advantages of the present invention more obvious and understandable, the technical solutions in the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment.

As shown in Fig. 1, the present invention provides a kind of hard disk backboard that supports adaptive hard disk interface, comprises hard disk interface 1, and hard disk interface is connected with SATA interface 2, PCIE interface 3, CPLD 4, buffer module 5, I2C bus expansion controlled Module 6 and hard disk state I2C protocol conversion module 7;

The I2C bus extension controlled module is also connected with the first I2C bus, the first I2C bus is also connected with the first I2C interface 8 and the temperature sensor 9, and the first I2C bus is also connected with the hard disk state I2C protocol conversion module 7 and CPLD 4;

Buffer module 5 is also connected with CPLD 4 and PCIE interface 3;

I2C bus extension controlled module 6 is also connected with CPLD 4;

The CPLD 4 is also connected with a second I2C interface 10, an SGPIO interface 11, a hard disk error indicator 12, a hard disk presence indicator 13 and a hard disk activity indicator 14;

The SATA interface 2 is also connected to the south bridge chip PCH 15 , the PCIE interface 3 is also connected to the CPU 16 , the first I2C interface 9 is also connected to the BMC 17 , and the second I2C interface 10 is also connected to the CPU 16 .

As shown in Figure 2, the quantity of hard disk interface 1 in the above-mentioned embodiment is 4, 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 third SATA interface 2.3 and the fourth SATA interface 2.4, the number of PCIE interfaces 3 is 4, the first PCIE interface 3.1, the second PCIE interface 3.2, the third PCIE interface 3.3 and the fourth PCIE interface 3.4, the number of buffer modules 4 is 4, the first buffer module 4.1, the second buffer module 4.2, the third buffer module 4.3 and the fourth buffer module 4.4; I2C bus extension controlled module 6 Including an I2C bus expansion unit 6.1, a first I2C bus controlled unit 6.2.1 and a second I2C bus controlled unit 6.2.2;

The first hard disk interface 1.1 is connected with the first SATA interface 2.1, the first PCIE interface 3.1, the first buffer module 5.1, the first I2C bus controlled unit 6.2.1, CPLD 4, and the hard disk state I2C protocol conversion module 7,

The first buffer module 5.1 is also connected with the CPLD 4 and the first PCIE interface 3.1;

The second hard disk interface 1.2 is connected with the second SATA interface 2.2, the second PCIE interface 3.2, the second buffer module 5.2, the first I2C bus controlled unit 6.2.1, CPLD 4, and the hard disk state I2C protocol conversion module 7,

The second buffer module 5.2 is also connected with the CPLD 4 and the second PCIE interface 3.2;

The third hard disk interface 1.3 is connected with the third SATA interface 2.3, the third PCIE interface 3.3, the third buffer module 5.3, the second I2C bus controlled unit 6.2.2, CPLD 4, and the hard disk state I2C protocol conversion module 7,

The third buffer module 5.3 is also connected with the CPLD 4 and the third PCIE interface 3.3;

The fourth hard disk interface 1.4 is connected with the fourth SATA interface 2.4, the fourth PCIE interface 3.4, the fourth buffer module 5.4, the second I2C bus controlled unit 6.2.2, CPLD 4, and the hard disk state I2C protocol conversion module 7,

The fourth buffer module 5.4 is also connected with the CPLD 4 and the fourth PCIE interface 3.4;

The first I2C bus controlled unit 6.2.1 is connected to the I2C bus expansion unit 6.1 and the CPLD 4, the second I2C bus controlled unit 6.2.2 is connected to the I2C bus expansion unit 6.1 and the CPLD 4, and the I2C bus expansion unit 6.1 is connected to the first I2C bus ;

The number of hard disk error indicators is also 4, the number of hard disk location indicators is 4, the number of hard disk activity indicators is 4, each hard disk error indicator, each hard disk location indicator, and each hard disk activity indicator The light indicates the status of the corresponding hard disk;

The hard disk interface includes a hard disk presence information port and a hard disk error information port, both of which are connected to the CPLD;

The backplane also includes an external power interface, the external power interface is connected to a power conversion module, and the CPLD is connected to the power conversion module. The CPLD can also be connected to the hard disk power supply, the external power supply interface can be connected to 5V or 12V, and the output voltage of the power conversion module is 3.3V;

As shown in Figure 3 and Figure 4, the hard disk backplane includes a first side A.1, a second side A.2, a third side A.3, a fourth side A.4, a front side and a back side;

Four hard disk interfaces, the first hard disk interface 1.1, the second hard disk interface 1.2, the third hard disk interface 1.3 and the fourth hard disk interface 1.4 are evenly arranged on the fourth side A.4 of the front of the hard disk backplane and connected to the fourth side A.4 parallel;

The first PCIE interface 3.1 is arranged on the back of the hard disk backplane near the first side A.1 and the second side A.2 and parallel to the second side A.2, and the first SATA interface 2.1 is arranged on the back of the hard disk backplane near the second side A.2. The position of a PCIE interface 3.1 and the second side A.2 is parallel to the second side A.2;

The third SATA interface 2.3 is arranged at the center position on the back of the hard disk backplane, and is parallel to the second side A.2;

The third PCIE interface 3.3 is arranged on the back of the hard disk backplane at a position close to the third SATA interface 2.3 from the direction of the third side A.3, and is perpendicular to the second side A.2;

The second PCIE interface 3.2 is arranged on the back of the hard disk backplane at a position close to the third SATA interface 2.3 from the direction of the first side A.1, and is perpendicular to the second side A.2;

The second SATA interface 2.2 is arranged in the middle of the first SATA interface 2.1 and the third SATA interface 2.3, and is perpendicular to the second side A.2;

The fourth SATA interface 2.4 is arranged on the back of the hard disk backplane close to the third side A.3 and the second side A.2 and parallel to the second side A.2, and the fourth PCIE interface 3.4 is arranged near the fourth SATA interface 2.4 and the position of the second side A.2 and perpendicular to the second side A.2;

The first hard disk interface 1.1, the second hard disk interface 1.2, the third hard disk interface 1.3, and the fourth hard disk interface 1.4 all use SFF-8639 hard disk connectors, the first PCIE interface 3.1, the second PCIE interface 3.2, and the third PCIE interface 3.3. The fourth PCIE interface 3.4 adopts the optical fiber copper cable connector OCUlink that supports PCIEX4 signals;

CPLD adopts LCMXO2-1200 type CPLD chip, hard disk state I2C protocol conversion module adopts TCA6408 type chip;

The I2C bus expansion unit adopts the PCA9546 I2C bus expansion chip; the first I2C bus controlled unit and the second I2C bus controlled unit adopt the 74LV3162 chip.

The hard disk status I2C protocol conversion module and CPLD are used to judge whether there is a hard disk inserted in the hard disk interface and the type of the inserted hard disk;

When it is determined that a hard disk is inserted and the type of the inserted hard disk is an NVME hard disk,

The hard disk status I2C protocol conversion module notifies the BMC that the type of the hard disk is an NVME hard disk, and the BMC notifies the CPU to connect to the PCIE interface, and the CPU communicates with the CPLD through the second I2C interface to control the activity indicator of the NVME hard disk;

The CPLD controls the I2C bus expansion controlled module to open, and the I2C communication between the BMC and the hard disk interface is opened;

The CPLD controls the buffer module to open, and the communication between the PCIE interface and the hard disk interface is opened;

The CPLD controls the error indicator light of the NVME hard disk and the presence indicator light of the NVME hard disk;

When it is determined that a hard disk is inserted and the type of the inserted hard disk is a SAS or SATA hard disk,

Hard disk status I2C protocol conversion module informs BMC that the type of hard disk is SAS or SATA hard disk, BMC informs PCH to connect with SATA interface, and PCH communicates with CPLD through SGPIO interface to control the activity indicator light of SAS or SATA hard disk;

The CPLD controls the error indicator of the SAS or SATA hard disk and the presence indicator of the SAS or SATAE hard disk.

In a 2U server, the requirements for 12 hard disks can be met through the combination of three backplanes with four hard disk interfaces mentioned above, and different types of hard disks can be selected according to actual needs.

SATA interface, the abbreviation of Serial ATA, is a computer bus whose main function is to transmit data between the motherboard and a large number of storage devices (such as hard disks and optical drives). ATA, AT AttachmentAT, embedded interface, ATA is also called IDE interface.

OCuLink, Optical Copper Link, Fiber/Copper Link.

CPLD, Complex Programmable Logic Device, complex programmable logic device.

BMC, Baseboard Management Controller, Baseboard Management Controller.

The embodiments of the present invention are illustrative, rather than limiting, and the above-mentioned embodiments are only to help understand the present invention, so the present invention is not limited to the embodiments described in the specific implementation manner, and those skilled in the art according to the technology of the present invention Other specific implementation modes derived from the scheme also belong to the protection scope of the present invention.

Claims (10)

1. A hard disk backplane supporting an adaptive hard disk interface, characterized in that it comprises a hard disk interface (1), and the hard disk interface is connected with a SATA interface (2), a PCIE interface (3), a CPLD (4), and a buffer module (5 ), I2C bus extension controlled module (6) and hard disk status I2C protocol conversion module (7); The I2C bus expansion controlled module is also connected with the first I2C bus, the first I2C bus is also connected with the first I2C interface (8) and the temperature sensor (9), and the first I2C bus is also connected with the hard disk status I2C protocol conversion module (7) Connect with CPLD (4); The buffer module (5) is also connected with the CPLD (4) and the PCIE interface (3); The I2C bus extension controlled module (6) is also connected with the CPLD (4); The CPLD (4) is also connected with a second I2C interface (10), an SGPIO interface (11), a hard disk error indicator light (12), a hard disk presence indicator light (13) and a hard disk activity indicator light (14); The SATA interface (2) is also connected to the south bridge chip PCH (15), the PCIE interface (3) is also connected to the CPU (16), the first I2C interface (9) is also connected to the BMC (17), and the second I2C interface (10 ) is also connected to the CPU (16). 2. A kind of hard disk backboard that supports adaptive hard disk interface as claimed in claim 1, is characterized in that, I2C bus extension controlled module comprises I2C bus extension unit and I2C bus controlled unit; I2C bus extension unit connects first I2C bus, the I2C bus controlled unit is connected to the I2C bus expansion unit, hard disk interface and CPLD. 3. A kind of hard disk backplane supporting self-adaptive hard disk interface as claimed in claim 1, it is characterized in that, hard disk interface comprises hard disk presence information port and hard disk error information port, hard disk presence information port and hard disk error information port are both Connect with CPLD. 4. A hard disk backplane supporting an adaptive hard disk interface as claimed in claim 1, further comprising an external power interface, the external power interface is connected to a power conversion module, and the CPLD is connected to the power conversion module. 5. A kind of hard disk backboard that supports adaptive hard disk interface as claimed in claim 1, is characterized in that, the quantity of hard disk interface is 4, and the quantity of SATA interface is 4, and the quantity of PCIE interface is 4, buffering The number of modules is 4, the number of hard disk error indicators is 4, the number of hard disk location indicators is 4, and the number of hard disk activity indicators is 4. 6. A hard disk backplane supporting adaptive hard disk interface as shown in claim 5, characterized in that the hard disk backplane includes a first side (A.1), a second side (A.2), and a third side (A.3), fourth side (A.4), front and back; The four hard disk interfaces are evenly arranged on the fourth side (A.4) of the front of the hard disk backplane and parallel to the fourth side (A.4); The first PCIE interface (3.1) is set on the back of the hard disk backplane close to the first side (A.1) and the second side (A.2) and parallel to the second side (A.2). The first SATA interface ( 2.1) Set it on the back of the hard disk backplane close to the first PCIE interface (3.1) and the second side (A.2) and parallel to the second side (A.2); The third SATA interface (2.3) is set at the center of the back of the hard disk backplane and parallel to the second side (A.2); The third PCIE interface (3.3) is set on the back of the hard disk backplane, close to the third SATA interface (2.3) from the third side (A.3), and perpendicular to the second side (A.2); The second PCIE interface (3.2) is set on the back of the hard disk backplane, close to the third SATA interface (2.3) from the first side (A.1) and perpendicular to the second side (A.2); The second SATA interface (2.2) is arranged in the middle of the first SATA interface (2.1) and the third SATA interface (2.3), and is perpendicular to the second side (A.2); The fourth SATA interface (2.4) is set on the back of the hard disk backplane close to the third side (A.3) and the second side (A.2) and parallel to the second side (A.2). The fourth PCIE interface ( 3.4) It is arranged near the fourth SATA interface (2.4) and the second side (A.2) and perpendicular to the second side (A.2). 7. A kind of hard disk backplane supporting self-adaptive hard disk interface as claimed in claim 1, it is characterized in that, hard disk interface adopts the hard disk connector of SFF-8639 model, and PCIE interface adopts the optical fiber copper cable connector OCUlink that supports PCIEX4 signal . 8. A kind of hard disk backboard that supports adaptive hard disk interface as claimed in claim 1, is characterized in that, CPLD adopts the CPLD chip of LCMXO2-1200 model, and hard disk state I2C protocol conversion module adopts the chip of TCA6408 model. 9. A hard disk backplane supporting an adaptive hard disk interface as claimed in claim 2, wherein the I2C bus expansion unit adopts a PCA9546 type I2C bus expansion chip; the I2C bus controlled unit adopts a 74LV3162 type chip. 10. A kind of hard disk backboard that supports adaptive hard disk interface as claimed in claim 5, is characterized in that, hard disk state I2C protocol conversion module and CPLD are used for judging whether hard disk interface has hard disk insertion and the hard disk type of insertion; When it is determined that a hard disk is inserted and the type of the inserted hard disk is an NVME hard disk, The hard disk status I2C protocol conversion module notifies the BMC that the type of the hard disk is an NVME hard disk, and the BMC notifies the CPU to connect to the PCIE interface, and the CPU communicates with the CPLD through the second I2C interface to control the activity indicator of the NVME hard disk; The CPLD controls the I2C bus expansion controlled module to open, and the I2C communication between the BMC and the hard disk interface is opened; The CPLD controls the buffer module to open, and the communication between the PCIE interface and the hard disk interface is opened; The CPLD controls the error indicator light of the NVME hard disk and the presence indicator light of the NVME hard disk; When it is determined that a hard disk is inserted and the type of the inserted hard disk is a SAS or SATA hard disk, Hard disk status I2C protocol conversion module informs BMC that the type of hard disk is SAS or SATA hard disk, BMC informs PCH to connect with SATA interface, and PCH communicates with CPLD through SGPIO interface to control the activity indicator light of SAS or SATA hard disk; The CPLD controls the error indicator of the SAS or SATA hard disk and the presence indicator of the SAS or SATAE hard disk.