CN109164884B - Design method of hard disk backboard, hard disk backboard and server - Google Patents

Design method of hard disk backboard, hard disk backboard and server Download PDF

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Publication number
CN109164884B
CN109164884B CN201810959299.1A CN201810959299A CN109164884B CN 109164884 B CN109164884 B CN 109164884B CN 201810959299 A CN201810959299 A CN 201810959299A CN 109164884 B CN109164884 B CN 109164884B
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Prior art keywords
hard disk
connector
controller
signal
backboard
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CN109164884A (en
Inventor
程鹏
董超
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Suzhou Inspur Intelligent Technology Co Ltd
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Suzhou Inspur Intelligent Technology Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution
    • G06F1/183—Internal mounting support structures, e.g. for printed circuit boards, internal connecting means
    • G06F1/187—Mounting of fixed and removable disk drives
    • 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
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F2213/0016—Inter-integrated circuit (I2C)

Abstract

The invention provides a design method of a hard disk backboard, the hard disk backboard and a server, wherein the designed hard disk backboard is provided with hard disk connectors connected with different types of hard disks, after the hard disks are connected, the type information of the hard disks is sent to a backboard controller through the hard disk connectors, the type information of the hard disks is uploaded to a three-mode card connected with an uplink connector through the uplink connector, after the three-mode card determines the type of the hard disks, an interaction signal is output according to the type of the hard disks, and the interaction signal is sent to the hard disks through the uplink connector, the backboard controller and the hard disk connectors respectively so as to finish interaction with the different types of hard disks. Because the three-mode card can interact with different types of hard disks connected to the hard disk backboard through the hard disk backboard, the hard disk backboard can be suitable for the different types of hard disks, and therefore the universality of the hard disk backboard is improved.

Description

Design method of hard disk backboard, hard disk backboard and server
Technical Field
The invention belongs to the technical field of computers, and particularly relates to a design method of a hard disk backboard, the hard disk backboard and a server.
Background
In the prior art, storage media of a server are divided into two types according to different signals, one type is an SAS/SATA hard disk based on SAS/SATA signals, and the other type is an NVMe hard disk based on PCIE signals. Because the transmission protocols of the SAS/SATA signals and the PCIE signals are different, that is, the operation modes of reading and writing the SAS/SATA hard disk and the NVMe hard disk are different, when designing the server hard disk backplane, a backplane suitable for the SAS/SATA hard disk and a backplane suitable for the NVMe hard disk need to be designed respectively, which results in poor universality of the server hard disk backplane.
Disclosure of Invention
In view of the above, the present invention provides a design method for a hard disk backplane, and a server, so as to solve the problem that the hard disk backplane in the prior art is not suitable for different types of storage media, which results in poor universality of the hard disk backplane.
The technical scheme is as follows:
the invention provides a design method of a hard disk backboard, which comprises the following steps:
connecting the hard disk through a hard disk connector; the hard disk is an NVMe hard disk or an SAS/SATA hard disk;
the hard disk connector sends the type information corresponding to the connected hard disk to the backboard controller;
the backboard controller uploads the acquired type information to the three-mode card through the uplink connector, so that the three-mode card outputs an interactive signal according to the type information;
and after receiving the interactive signal output by the three-mode card, the uplink connector transmits the interactive signal to the hard disk connector so as to interact with the hard disk.
Preferably, after receiving the interaction signal output by the three-mode card, the uplink connector issues the interaction signal to the hard disk connector, so as to interact with the hard disk, where the issuing includes:
if the connected hard disk is an NVMe hard disk, the interaction signal comprises a clock signal, a reset signal and a read-write signal;
sending the reset signal to the backplane controller through a sideband signal transmission channel arranged between the upstream connector and the backplane controller;
the backboard controller sends the reset signal to the hard disk connector through a sideband signal transmission channel arranged between the backboard controller and the hard disk connector;
and issuing the clock signal and the read-write signal to the hard disk connector through a high-speed signal transmission channel arranged between the uplink connector and the hard disk connector.
Preferably, after receiving the interaction signal, the uplink connector issues the interaction signal to the hard disk connector, so as to interact with the hard disk, including:
if the connected hard disk is an SAS/SATA hard disk, the interaction signal comprises a read-write signal;
and issuing the read-write signal to the hard disk connector through a high-speed signal transmission channel arranged between the uplink connector and the hard disk connector.
The invention also provides a hard disk backboard, comprising:
the system comprises a hard disk connector, a backboard controller and an uplink connector;
the hard disk connector is used for connecting a hard disk and sending hard disk type information to the back panel controller after the hard disk connector is connected with the hard disk; the hard disk is an NVMe hard disk or an SAS/SATA hard disk;
the backboard controller is used for uploading the acquired hard disk type information to the uplink connector;
the uplink connector is connected with the three-mode card and used for uploading the hard disk type information sent by the backboard controller to the three-mode card, receiving an interaction signal output by the three-mode card based on the hard disk type information and sending the received interaction signal to the hard disk connector so as to interact with the hard disk.
Preferably, the hard disk backplane further comprises a high-speed signal transmission channel and a sideband signal transmission channel;
the high-speed signal transmission channel is arranged between the uplink connector and the hard disk connector and is used for transmitting a clock signal and a read-write signal to the hard disk connector;
the sideband signal transmission channel is arranged between the backboard controller and the hard disk connector and is used for acquiring hard disk type information connected to the hard disk connector from the hard disk connector and sending a hard disk reset signal to the hard disk connector;
the sideband signal transmission channel is also arranged between the uplink connector and the backboard controller and is used for acquiring the hard disk type information connected to the hard disk connector from the backboard controller and sending a hard disk reset signal to the backboard controller; wherein a sideband signal transmission channel for acquiring the hard disk type information connected to the hard disk connector from the backplane controller is I2And the bus C is different from other sideband signal transmission channels of the sideband signal transmission channel which acquires the hard disk type information connected to the hard disk connector from the backboard controller, and the other sideband signal transmission channels are I/O channels.
Preferably, the device further comprises an indicator light;
the indicator light is connected with the back panel controller and used for indicating that the hard disk is in an activated state after the back panel controller receives an activation signal from the hard disk connector;
and the positioning module is also used for positioning the hard disk on the backboard according to the positioning signal received by the backboard controller from the uplink connector.
Preferably, the method further comprises the following steps: the input end of the power supply connector is connected with a power supply, and the output end of the power supply connector is connected with the hard disk connector and used for providing power supply signals of 12V, 5V and 3.3V for the hard disk.
Preferably, the method further comprises the following steps: and the clock buffer is arranged between the uplink connector and the hard disk connector and is used for converting the clock signal output by the uplink connector and sending the converted clock signal to the hard disk connector when the NVMe hard disk is connected with the hard disk connector.
Preferably, the method further comprises the following steps: and the FRU is connected with the backboard controller and is used for storing the distribution information of the backboard controller.
The present invention also provides a server, comprising:
the system comprises a main board, a three-mode card and a hard disk backboard;
the three-mode card is respectively connected with the mainboard and the hard disk backboard; the hard disk backboard is connected with a hard disk, and the hard disk is an NVMe hard disk or an SATA hard disk
Compared with the prior art, the technical scheme provided by the invention has the following advantages:
according to the technical scheme, the hard disk backboard designed in the application is provided with the hard disk connectors connected with different types of hard disks, after the hard disks are connected, the type information of the hard disks is sent to the backboard controller through the hard disk connectors, and then is uploaded to the three-mode card connected with the uplink connector through the uplink connector, so that after the three-mode card determines the type of the hard disks, the interaction signals are output according to the type of the hard disks, and the interaction signals are issued to the hard disks through the uplink connector, the backboard controller and the hard disk connectors respectively, so that interaction with the different types of hard disks is completed. Because the three-mode card can interact with different types of hard disks connected to the hard disk backboard through the hard disk backboard, the hard disk backboard can be suitable for the different types of hard disks, and therefore the universality of the hard disk backboard is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a design method of a hard disk backplane according to an embodiment of the present invention;
FIG. 2 is a flowchart of another design method for a hard disk backplane according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a hard disk backplane according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a server according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment discloses a design method of a hard disk backboard, referring to fig. 1, the embodiment comprises the following steps:
s101, connecting a hard disk through a hard disk connector; the hard disk is an NVMe hard disk or an SAS/SATA hard disk;
the hard disk connector in this embodiment is based on the SFF-8639 protocol. The hard disk connector can provide a plurality of connection interfaces and can meet the connection of a plurality of different types of hard disks.
S102, the hard disk connector sends the type information corresponding to the connected hard disk to a backboard controller;
after the hard disk connector is connected with the hard disk, the type information of the connected hard disk is sent to the backboard controller. The type information is represented by a signal fed back by an IF _ DET # signal interface on the hard disk and a signal fed back by a PRSNT0# signal interface. Specifically, IF the hard disk is an NVMe hard disk, IF _ DET # is low, and PRSNT0# is high; IF the hard disk is a SAS/SATA hard disk, IF _ DET # is high, and PRSNT0# is low.
Certainly, the backplane controller may also actively acquire the hard disk type information after detecting that the hard disk connector is connected with the hard disk.
S103, the backboard controller uploads the acquired type information to the three-mode card through the uplink connector, so that the three-mode card outputs an interaction signal according to the type information;
the transmission protocols corresponding to different types of hard disks are different, that is, the operation modes are different when the read-write operation is performed on different types of hard disks. Specifically, if the hard disk is an NVMe hard disk, a clock signal and a reset signal need to be sent to the NVMe hard disk, and then the read-write operation on the NVMe hard disk can be executed; if the hard disk is an SAS/SATA hard disk, the read-write operation of the SAS/SATA hard disk can be directly executed.
Therefore, after the three-mode card receives the type information sent by the backplane controller through the uplink connector, the type of the hard disk currently connected to the hard disk backplane can be determined, and the interactive signal corresponding to the type of the hard disk is output through the uplink connector.
And S104, after receiving the interactive signal output by the three-mode card, the uplink connector issues the interactive signal to the hard disk connector so as to interact with the hard disk.
The three-mode card sends an interaction signal to a hard disk connected with the backboard through an uplink connector on the backboard and a hard disk connector on the backboard, and then realizes the read-write operation of the hard disk based on a transmission protocol corresponding to the hard disk.
According to the technical scheme, the hard disk backboard designed in the embodiment is provided with the hard disk connectors connected with different types of hard disks, after the hard disks are connected, the type information of the hard disks is sent to the backboard controller through the hard disk connectors, the type information of the hard disks is uploaded to the three-mode card connected with the uplink connector through the uplink connector, after the three-mode card determines the type of the hard disks, the interaction signals are output according to the type of the hard disks, and the interaction signals are sent to the hard disks through the uplink connector, the backboard controller and the hard disk connectors respectively, so that interaction with the different types of hard disks is completed. Because the three-mode card can interact with different types of hard disks connected to the hard disk backboard through the hard disk backboard, the hard disk backboard can be suitable for the different types of hard disks, and therefore the universality of the hard disk backboard is improved.
The embodiment also discloses another design method of the hard disk backboard, and as shown in fig. 2, the embodiment comprises the following steps:
s201, connecting a hard disk through a hard disk connector; the hard disk is an NVMe hard disk or an SAS/SATA hard disk;
s202, the hard disk connector sends the type information corresponding to the connected hard disk to a backboard controller;
s203, the backboard controller uploads the acquired type information to the three-mode card through the uplink connector, so that the three-mode card outputs an interaction signal according to the type information;
if the connected hard disk is an NVMe hard disk and the interaction signal comprises a clock signal, a reset signal and a read-write signal, executing step S204;
if the connected hard disk is an SAS/SATA hard disk and the interaction signal comprises a read-write signal, executing step S206;
the implementation manners of steps S201 to S203 in this embodiment are similar to the implementation manners of steps S101 to S103 in the previous embodiment, and are not described herein again.
S204, sending the reset signal to the backboard controller through a sideband signal transmission channel arranged between the uplink connector and the backboard controller; the backboard controller sends the reset signal to the hard disk connector through a sideband signal transmission channel arranged between the backboard controller and the hard disk connector;
the channels arranged between the uplink connector and the backplane controller for the interaction of the uplink connector and the backplane controller are collectively called sideband signal transmission channels, wherein each sideband signal transmission channel comprises an I2A C bus and a plurality of I/O lines. Wherein, I2The C bus is used for transmitting hard disk information between the backboard controller and the uplink connector, and the hard disk information comprises the type information of the hard disk, the manufacturer information of the hard disk and the like. The specific transmission process may be that the backplane controller sends the acquired hard disk information to the uplink connector, or that the uplink connector actively acquires the hard disk information from the backplane controller.
One I/O line is used to transmit the reset signal output by the upstream connector to the backplane controller.
In this embodiment, the I/O lines further include a line for transmitting backplane type information, which is used to transmit the backplane type information in the backplane controller to the upstream connector; and the circuit is used for transmitting the hard disk connection state information in the backboard controller to the uplink connector. Wherein, hard disk connection state includes: connection, disconnection, and change.
The channel arranged between the backplane controller and the hard disk connector and used for interaction of the backplane controller and the hard disk connector is also called a sideband signal transmission channel. The first I/O line is used for transmitting hard disk information between the backboard controller and the hard disk connector. The specific transmission process may be that the hard disk connector sends the acquired hard disk information to the backplane controller, or that the backplane controller actively acquires the hard disk information from the hard disk connector. The second I/O line and the third I/O line are used for sending the IF _ DET # signal and the PRSNT0# signal of the hard disk to the backplane controller respectively. And the fourth I/O line is used for sending the reset signal to the hard disk connector after the backboard controller receives the reset signal. And the fifth I/O line is used for sending an activate signal to the back board controller after the hard disk connector is connected with the hard disk.
S205, the clock signal and the read-write signal are sent to the hard disk connector through a high-speed signal transmission channel arranged between the uplink connector and the hard disk connector;
the channel which is arranged between the uplink connector and the hard disk connector and used for interaction of the uplink connector and the hard disk connector is called a high-speed signal transmission channel, wherein the high-speed signal transmission channel comprises two high-speed signal transmission channels, and the first high-speed signal transmission channel is used for transmitting a clock signal with a specific frequency when the hard disk is an NVMe hard disk; and the second high-speed signal transmission channel is used for transmitting read-write data between the three-mode card and the hard disk.
In this embodiment, the specific way of transmitting the clock signal by the first high-speed signal transmission channel is that after the clock buffer receives the clock signal output by the Tri-mode card, according to the number of the hard disks connected to the hard disk backplane, one path of clock signal is converted into multiple paths of clock signals, and the multiple paths of clock signals are sent to the hard disk connector, so that the clock signals are provided for each hard disk respectively. Wherein the clock signal is a 100MHz clock signal.
S206, the read-write signal is sent to the hard disk connector through a high-speed signal transmission channel arranged between the uplink connector and the hard disk connector.
For different types of hard disks, channels for transmitting read-write signals can be realized by adopting a second high-speed signal transmission channel.
According to the technical scheme, the hard disk backboard designed in the embodiment is provided with the hard disk connectors connected with different types of hard disks, after the hard disks are connected, the type information of the hard disks is sent to the backboard controller through the hard disk connectors, the type information of the hard disks is uploaded to the three-mode card connected with the uplink connector through the uplink connector, after the three-mode card determines the type of the hard disks, the interaction signals are output according to the type of the hard disks, and the interaction signals are sent to the hard disks through the uplink connector, the backboard controller and the hard disk connectors respectively, so that interaction with the different types of hard disks is completed. Because the three-mode card can interact with different types of hard disks connected to the hard disk backboard through the hard disk backboard, the hard disk backboard can be suitable for the different types of hard disks, and therefore the universality of the hard disk backboard is improved.
In correspondence to the design method of the hard disk backplane disclosed in the above embodiment, this embodiment discloses a hard disk backplane, where the hard disk backplane is a PCB, and refer to fig. 3, which is a schematic structural diagram of the hard disk backplane provided in the embodiment of the present invention, and the hard disk backplane in this embodiment includes:
a hard disk connector (HDD-Conn)1, a backplane Controller (UBM Controller)2, an uplink connector (OCulinkor slim Conn)3, an indicator lamp 4, a Power connector (Power Conn)5, a Clock Buffer (Clock Buffer)6, and an asset management unit FRU 7.
The hard disk connector 1 is used for connecting a hard disk and sending hard disk type information to the back board controller 2 after the hard disk connector is connected with the hard disk; wherein the hard disk is an NVMe hard disk or an SAS/SATA hard disk;
the hard disk type information is represented by a signal fed back by an IF _ DET # signal interface and a signal fed back by a PRSNT0# signal interface on the hard disk. Specifically, IF the hard disk is an NVMe hard disk, IF _ DET # is low, and PRSNT0# is high; IF the hard disk is a SAS/SATA hard disk, IF _ DET # is high, and PRSNT0# is low.
In this embodiment, there are N interfaces of the hard disk connector 1, where N is a positive integer greater than or equal to 1.
The hard disk is connected with the hard disk backboard through the interface of the hard disk connector 1. The hard disk can be an NVMe hard disk based on PCIE signals, and also can be an SAS/SATA hard disk based on SAS/SATA signals.
The backboard controller 2 is used for uploading the acquired hard disk type information to the uplink connector 3;
after the backplane controller 2 receives the IF _ DET # and the PRSNT0#, the type of the hard disk can be determined according to the IF _ DET # and the PRSNT0 #. The determined type of hard disk is uploaded to the upstream connector 3.
Wherein, through I arranged between the uplink connector 3 and the backplane controller 22The C bus transfers hard disk type information.
In this embodiment, the backplane controller 2 is a Complex Programmable Logic Device (CPLD) or a Field-Programmable Gate Array (FPGA). In other embodiments a small multi-processor MCPU may also be used as the backplane controller 2.
The uplink connector 3 is connected to a Tri-mode card (Tri-mode card), and is configured to upload the hard disk type information sent by the backplane controller 2 to the Tri-mode card, receive an interaction signal output by the Tri-mode card based on the hard disk type information, and issue the received interaction signal to the hard disk connector 1 to interact with the hard disk.
In this embodiment, the uplink connector 3 is connected to the motherboard by the Tri-mode card, the motherboard provides the pcie x8 signal to the Tri-mode card, and then the Tri-mode card converts the pcie x8 signal into a signal corresponding to the type of the hard disk according to the received information of the type of the hard disk connected to the hard disk backplane, and sends the signal to the hard disk, thereby implementing interaction with the hard disk. The upstream connector 3 is an OCulink connector or a Slimline connector.
The Tri-mode card is a board card supporting a storage medium based on SAS signals, a storage medium based on SATA signals, and a storage medium based on PCIE signals, and a board card with a mature technology is directly used in this embodiment.
The backplane controller 2 is connected to the upstream connector 3 via an I-port provided between the backplane controller 2 and the upstream connector2The C bus sends the hard disk type information to the uplink connector 3, and then uploads the hard disk type information to the Tri-mode card.
And the Tri-mode card determines the type of the hard disk according to the received hard disk type information and outputs an interactive signal based on the type of the hard disk.
If the hard disk is an NVMe hard disk, the interaction signals comprise clock signals, reset signals and read-write signals;
and if the hard disk is an SAS/SATA hard disk, the interaction signal comprises a read-write signal.
The manner of issuing to the hard disk connector 1 is different for different contents included in the interactive signal. Specifically, the upstream connector and the backplane controllerThe channels arranged between the two channels for interaction are collectively called sideband signal transmission channels, wherein the sideband signal transmission channels comprise an I2A C bus and a plurality of I/O lines. I is2The C bus is used for transmitting hard disk information between the backboard controller and the uplink connector, and the hard disk information comprises the type information of the hard disk, the manufacturer information of the hard disk and the like. An I/O line (PERST #) is used for transmitting the reset signal output by the host through the uplink connector to the backplane controller.
In this embodiment, the I/O lines further include a line (BP _ TYPE) for transmitting backplane TYPE information, which is used to transmit the backplane TYPE information in the backplane controller to the upstream connector; a line (CHANGE _ DETECT #) for transmitting the hard disk connection status information in the backplane controller to the upstream connector. Wherein, hard disk connection state includes: connection, disconnection, and change.
The channel arranged between the backplane controller and the hard disk connector and used for interaction of the backplane controller and the hard disk connector is also called a sideband signal transmission channel. The system specifically comprises 5I/O lines, and a first I/O line (SMBUS0) is used for transmitting hard disk information between the backplane controller and the hard disk connector. The specific transmission process may be that the hard disk connector sends the acquired hard disk information to the backplane controller, or that the backplane controller actively acquires the hard disk information from the hard disk connector. The second I/O line (IF _ DET #) and the third I/O line (PRSNT0#) are used to send the IF _ DET # signal and PRSNT0# signal of the hard disk to the backplane controller, respectively. The fourth I/O line (PERST0#) is used for sending a reset signal to the hard disk connector after the backplane controller receives the reset signal sent by the motherboard. And the fifth I/O line (ACTIVITY) is used for sending an ACTIVITY signal to the back panel controller after the hard disk connector is connected with the hard disk.
The channel which is arranged between the uplink connector and the hard disk connector and used for interaction of the uplink connector and the hard disk connector is called a high-speed signal transmission channel, wherein the high-speed signal transmission channel comprises two high-speed signal transmission channels, and the first high-speed signal transmission channel is used for transmitting a clock signal with a specific frequency when the hard disk is an NVMe hard disk; and a second High-Speed Signal transmission channel (High Speed Signal) is used for transmitting read-write data between the Tri-mode card and the hard disk.
In this embodiment, the specific way of transmitting the clock signal by the first high-speed signal transmission channel is that after the clock buffer 6 receives the clock signal output by the Tri-mode card, according to the number of the hard disks connected to the hard disk backplane, one path of clock signal is converted into multiple paths of clock signals, and the multiple paths of clock signals are sent to the hard disk connector 1, so as to provide the clock signal for each hard disk. Wherein the clock signal is a 100MHz clock signal.
The indicator lamp 4 is connected with the backboard controller 2 and used for indicating that the hard disk is in an activated state after the backboard controller 2 receives an activation signal from the hard disk connector 1; the positioning module is also used for positioning the hard disk on the backboard according to the positioning locate signal received by the backboard controller 2 from the uplink connector 3 to realize the positioning function; and indicating the hard disk to have an error according to the error signal received by the backplane controller 2 from the uplink connector 3. Wherein, locate and error are both through I2The C bus is sent to the backplane controller 2.
Optionally, in this embodiment, 3 indicator lights are provided for lighting different indicator lights when different signals are received. Meanwhile, the colors of the 3 indicating lamps can be different, so that the state of the hard disk can be visually determined according to the colors.
The input end of the power connector 5 is connected with a power supply, and the output end of the power connector 5 is connected with the hard disk connector 1 and used for providing power supply signals of 12V, 5V and 3.3V for the hard disk.
The asset management unit FRU 6 is connected to the backplane controller 2 and is configured to store distribution information of the backplane controller 2.
The distribution information comprises the number of the backboard controllers connected with the mainboard, the number of the hard disks connected to the backboard where each backboard controller is located and the type information of each hard disk. Optionally, the distribution information is maintained in the form of a table.
From the above technical solution, compared with the prior art in which a hard disk backplane is separately configured for a storage medium based on SAS/SATA signals and a storage medium based on PCIE signals, and a different SAS/RAID card or PCIE-switch card is used at the upstream end for expansion and transmission, the hard disk backplane disclosed in this embodiment configures a hard disk connector based on SFF-8639 protocol, and configures a backplane controller and an upstream connector on a PCB board, where the upstream connector is connected with a Tri-mode card, so that the hard disk connector can be connected to different types of hard disks, after a hard disk is connected, the type information of the hard disk is sent to the backplane controller through the hard disk connector, and then the type information of the hard disk is uploaded to a Tri-mode card connected to the upstream connector through the upstream connector, so that after the Tri-mode card determines the type of the hard disk, and outputting an interaction signal according to the type of the hard disk, and sending the interaction signal to the hard disk through the uplink connector, the backboard controller and the hard disk connector respectively so as to finish interaction with different types of hard disks. Because the Tri-mode card can interact with different types of hard disks connected to the hard disk backboard through the hard disk backboard, the hard disk backboard can be suitable for the different types of hard disks, and therefore the universality of the hard disk backboard is improved.
Based on the hard disk backplane disclosed in the foregoing embodiment, this embodiment further discloses a server using the hard disk backplane, as shown in fig. 4, which is a schematic structural diagram of the server in this embodiment, where the server includes:
a Main Board (MB)401, a Tri-mode card 402, and a hard disk Backplane (BP) 403;
the Tri-mode card 402 is respectively connected with the mainboard 401 and the hard disk backboard 403; the hard disk backplane 403 is used for being connected with at least one hard disk of an SAS/SATA hard disk and an NVMe hard disk.
Because the hard disk back plate in the server is suitable for different types of hard disks, the storage medium of the server can select various types of hard disks, and the storage support of the server is increased. And the storage requirements required by different products are different, so that the types of the adopted storage media are different, and the server in the embodiment can be suitable for different types of hard disks, so that the server can be used for manufacturing various different products, the competition capability of the server is improved, and the flexible configuration capability of the server is improved.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the device provided by the embodiment, the description is relatively simple because the device corresponds to the method provided by the embodiment, and the relevant points can be referred to the method part for description.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A design method of a hard disk backboard is characterized by comprising the following steps:
connecting the hard disk through a hard disk connector; the hard disk is an NVMe hard disk or an SAS/SATA hard disk;
the hard disk connector sends the type information corresponding to the connected hard disk to the backboard controller;
the backboard controller uploads the acquired type information to the three-mode card through the uplink connector, so that the three-mode card outputs an interactive signal according to the type information;
after receiving the interaction signal output by the three-mode card, the uplink connector transmits the interaction signal to the hard disk connector so as to interact with the hard disk;
after receiving the interaction signal output by the three-mode card, the uplink connector issues the interaction signal to the hard disk connector so as to interact with the hard disk, wherein the step of sending the interaction signal to the hard disk connector comprises the following steps:
if the connected hard disk is an NVMe hard disk, the interaction signal comprises a clock signal, a reset signal and a read-write signal;
sending the reset signal to the backplane controller through a sideband signal transmission channel arranged between the upstream connector and the backplane controller; wherein the sideband signal transmission channel between the uplink connector and the backplane controller comprises an I2C bus and multiple I/O lines, I2The C bus is used for transmitting hard disk information between the backplane controller and the uplink connector, one I/O line is used for transmitting a reset signal output by the uplink connector to the backplane controller, and the other I/O line is used for transmitting backplane type information in the backplane controller to the uplink connector; one I/O line is used for transmitting the hard disk connection state information in the backboard controller to the uplink connector;
the backboard controller sends the reset signal to the hard disk connector through a sideband signal transmission channel arranged between the backboard controller and the hard disk connector; the sideband signal transmission channel between the backplane controller and the hard disk connector comprises 5I/O lines, the first I/O line is used for transmitting hard disk information between the backplane controller and the hard disk connector, the second I/O line and the third I/O line are respectively used for sending an IF _ DET # signal and a PRSNT0# signal of a hard disk to the backplane controller, the fourth I/O line is used for sending a reset signal to the hard disk connector after the backplane controller receives the reset signal, and the fifth I/O line is used for sending an active signal to the backplane controller after the hard disk connector is connected with the hard disk;
and issuing the clock signal and the read-write signal to the hard disk connector through a high-speed signal transmission channel arranged between the uplink connector and the hard disk connector.
2. The method of claim 1, wherein the sending the interaction signal to the hard disk connector after the uplink connector receives the interaction signal to interact with the hard disk comprises:
if the connected hard disk is an SAS/SATA hard disk, the interaction signal comprises a read-write signal;
and issuing the read-write signal to the hard disk connector through a high-speed signal transmission channel arranged between the uplink connector and the hard disk connector.
3. A hard disk backplane, comprising:
the system comprises a hard disk connector, a backboard controller and an uplink connector;
the hard disk connector is used for connecting a hard disk and sending hard disk type information to the back panel controller after the hard disk connector is connected with the hard disk; the hard disk is an NVMe hard disk or an SAS/SATA hard disk;
the backboard controller is used for uploading the acquired hard disk type information to the uplink connector;
the uplink connector is connected with a three-mode card and used for uploading the hard disk type information sent by the backboard controller to the three-mode card, receiving an interaction signal output by the three-mode card based on the hard disk type information and sending the received interaction signal to the hard disk connector so as to interact with the hard disk;
the hard disk backboard also comprises a high-speed signal transmission channel and a sideband signal transmission channel;
the high-speed signal transmission channel is arranged between the uplink connector and the hard disk connector and is used for transmitting a clock signal and a read-write signal to the hard disk connector;
the sideband signal transmission channel is arranged between the backboard controller and the hard disk connector and is used for acquiring hard disk type information connected to the hard disk connector from the hard disk connector and sending a hard disk reset signal to the hard disk connector; wherein the sideband signal transmission channel between the uplink connector and the backplane controller comprises an I2C bus and multiple I/O lines, I2The C bus is used for transmitting hard disk information between the backplane controller and the uplink connector, one I/O line is used for transmitting a reset signal output by the uplink connector to the backplane controller, and the other I/O line is used for transmitting backplane type information in the backplane controller to the uplink connector; one I/O line is used for transmitting the hard disk connection state information in the backboard controller to the uplink connector;
the sideband signal transmission channel is also arranged between the uplink connector and the backboard controller and is used for acquiring the hard disk type information connected to the hard disk connector from the backboard controller and sending a hard disk reset signal to the backboard controller; wherein a sideband signal transmission channel for acquiring the hard disk type information connected to the hard disk connector from the backplane controller is I2The bus C is different from other sideband signal transmission channels of the sideband signal transmission channel which acquires the hard disk type information connected to the hard disk connector from the backboard controller, and the other sideband signal transmission channels are I/O channels;
the sideband signal transmission channel between the backplane controller and the hard disk connector comprises 5I/O lines, the first I/O line is used for transmitting hard disk information between the backplane controller and the hard disk connector, the second I/O line and the third I/O line are respectively used for sending an IF _ DET # signal and a PRSNT0# signal of a hard disk to the backplane controller, the fourth I/O line is used for sending a reset signal to the hard disk connector after the backplane controller receives the reset signal, and the fifth I/O line is used for sending an active signal to the backplane controller after the hard disk connector is connected with the hard disk.
4. The back panel of claim 3, further comprising an indicator light;
the indicator light is connected with the back panel controller and used for indicating that the hard disk is in an activated state after the back panel controller receives an activation signal from the hard disk connector;
and the positioning module is also used for positioning the hard disk on the backboard according to the positioning signal received by the backboard controller from the uplink connector.
5. The backsheet according to claim 3 or 4, further comprising: the input end of the power supply connector is connected with a power supply, and the output end of the power supply connector is connected with the hard disk connector and used for providing power supply signals of 12V, 5V and 3.3V for the hard disk.
6. The backsheet according to claim 3 or 4, further comprising: and the clock buffer is arranged between the uplink connector and the hard disk connector and is used for converting the clock signal output by the uplink connector and sending the converted clock signal to the hard disk connector when the NVMe hard disk is connected with the hard disk connector.
7. The backsheet according to claim 3 or 4, further comprising: and the FRU is connected with the backboard controller and is used for storing the distribution information of the backboard controller.
8. A server, comprising:
the system comprises a main board, a three-mode card and a hard disk backboard; the hard disk backplane as recited in any of claims 3 to 7;
the three-mode card is respectively connected with the mainboard and the hard disk backboard; the hard disk backboard is connected with a hard disk, and the hard disk is an NVMe hard disk or an SATA hard disk.
CN201810959299.1A 2018-08-22 2018-08-22 Design method of hard disk backboard, hard disk backboard and server Active CN109164884B (en)

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