CN113190084A - Hard disk backboard connecting method and device supporting hard disks with various bit widths - Google Patents

Hard disk backboard connecting method and device supporting hard disks with various bit widths Download PDF

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CN113190084A
CN113190084A CN202110319360.8A CN202110319360A CN113190084A CN 113190084 A CN113190084 A CN 113190084A CN 202110319360 A CN202110319360 A CN 202110319360A CN 113190084 A CN113190084 A CN 113190084A
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hard disk
nvme
width
cpld
cable
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CN113190084B (en
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丁超
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Shandong Yingxin Computer Technology Co Ltd
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Shandong Yingxin Computer 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
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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  • General Engineering & Computer Science (AREA)
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Abstract

The invention discloses a hard disk backboard connecting method supporting a hard disk with multiple bit widths, which comprises the following steps: packaging and compatible the cable connector interface of the hard disk backboard; setting a reference clock of the NVME hard disk as an on-board clock in the hard disk backboard; designing cables of NVME hard disks with different widths, and butting a controller through the cables; setting a dial switch, connecting the dial switch with a CPLD, identifying a working mode through the dial switch by the CPLD, and carrying out lighting treatment according to the working mode; through the mode, the problem that the NVME hard disk with the width of x2 and the NVME hard disk with the width of x1 cannot be supported by the existing multi-mode hard disk back plate only supporting the NVME hard disk with the width of x4 can be solved, the specification number of the hard disk back plate is reduced, and the competitiveness of the whole system is improved.

Description

Hard disk backboard connecting method and device supporting hard disks with various bit widths
Technical Field
The invention relates to the technical field of hard disk backplanes, in particular to a hard disk backplane connection method and device supporting multiple bit wide hard disks.
Background
With the continuous development of the storage market, the demand for data storage is continuously increased, the requirements for the capacity, the quantity and the transmission of the server supporting hard disks are higher and higher, and the requirements for hard disk backplanes are also higher and higher.
As shown in fig. 1, the hard disk backplane supports 4 x8 high-speed interfaces (e.g., slim x8 high-speed connector interfaces), an NVME hard disk mode of a CPU is docked, or an NVME hard disk mode of a RAID card is docked, the high-speed interfaces provide a PCIE interface of x4 for each 2.5-inch NVME hard disk, in the case of the CPU being docked with the NVME hard disk, a separate VPP connector is provided on the hard disk backplane, a VPP control signal of each CPU is sent to a CPLD of the hard disk backplane, and each x8 high-speed connector provides a group VPP ADDRESS to the CPLD for indicating that PCIE transmitted in the connector interface is from a corresponding CPU in the motherboard and a corresponding VPP bus, so that control signals such as lighting of the hard disk are analyzed in the CPLD through the VPP bus of the CPU, and functions such as lighting of each hard disk are provided.
As shown in fig. 2, in the NVME hard disk scenario of docking with the RAID card, two sets of I2C are provided for each x8 high-speed connector and sent to the backplane CPLD, and the RAID card analyzes the control signals such as lighting of the hard disk in the CPLD through I2C, and provides functions such as lighting for each hard disk.
Therefore, currently, NVME hard disks with x1 bit width and x2 bit width cannot be supported under the condition of interfacing NVME hard disks, and interfacing any NVME hard disk mode with different widths cannot be smoothly supported well, and compatible design of NVME hard disks with different bit widths cannot be realized.
Disclosure of Invention
The invention mainly solves the problems that the multi-mode hard disk back plate only supports the NVME hard disk with x4 bit width, does not support the NVME hard disk with x1 bit width and x2 bit width, and cannot realize the compatible design of the NVME hard disks with different bit widths.
In order to solve the technical problems, the invention adopts a technical scheme that: a method for connecting a hard disk backboard supporting hard disks with various bit widths is provided, which comprises the following steps:
packaging and compatible the cable connector interface of the hard disk backboard;
setting a reference clock of a hard disk as an in-board clock in the hard disk backboard;
designing cables of hard disks with different widths, and butting a controller through the cables;
setting a dial switch, connecting the dial switch with a CPLD, and identifying a working mode by the CPLD through the dial switch and carrying out lighting treatment according to the working mode.
Preferably, the hard disk is an NVME hard disk.
The cable includes: the cable of the NVME hard disk with the first width, the cable of the NVME hard disk with the second width and the cable of the NVME hard disk with the third width;
the cable connector interface is an NVME interface, and the width of the NVME interface is a fourth width.
Preferably, the step of docking the controller by the cable further comprises:
when the cable of the NVME hard disk with the first width is used for butting the controller, connecting an NVME interface with a fourth width on a control board with the four NVME interfaces with the fourth width on the hard disk backboard through the cable of the NVME hard disk with the first width;
and sending a PCIe signal to the NVME hard disk with the first width in the hard disk backboard, and driving the NVME hard disk with the first width.
Preferably, the step of docking the controller by the cable further comprises:
when a cable of the NVME hard disk with a second width is used for butting a controller, connecting an NVME interface with a fourth width on the control board with two NVME interfaces with the fourth width on the hard disk backboard through a cable of the NVME hard disk with the second width;
and sending a PCIe signal to the NVME hard disk with the second width in the hard disk backboard, and driving the NVME hard disk with the second width.
Preferably, the working modes include a working mode of an NVME hard disk with a third width, a working mode of an NVME hard disk with a second width, and a working mode of an NVME hard disk with a first width;
when the working mode is the working mode of the NVME hard disk with the third width, the control end inputs a signal to the CPLD, and the signal corresponds to at least one NVME hard disk with the third width;
and the CPLD analyzes the signal and controls the corresponding NVME hard disk to carry out lighting processing.
Preferably, when the working mode is the working mode of the NVME hard disk with the second width, the control terminal inputs a signal to the CPLD, where the signal corresponds to at least two NVME hard disks with the second width;
and the CPLD analyzes the signal and controls the corresponding NVME hard disk to carry out lighting processing.
Preferably, when the working mode is the working mode of the NVME hard disk with the first width, the control terminal inputs a signal to the CPLD, where the signal corresponds to at least four NVME hard disks with the second width;
and the CPLD analyzes the signal and controls the corresponding NVME hard disk to carry out lighting processing.
Preferably, the control board comprises a main board and a RAID board; the control end comprises a CPU and a RAID; the signals include a VPP signal and an I2C signal;
the CPU inputs a VPP signal to the CPLD through a VPP controller; the RAID inputs an I2C signal to the CPLD.
The invention also provides a hard disk backboard connecting device supporting hard disks with various bit widths, which comprises: a hard disk back plate and a control plate;
the hard disk backboard is provided with a CPLD, a hard disk connector interface, a hard disk backboard cable connector interface, a dial switch and an NVME hard disk; the dial switch is connected with the CPLD; the CPLD is connected with a plurality of hard disks; the hard disk connector interface is connected with the NVME hard disk;
the control panel is provided with a control end and a high-speed interface; the control end is respectively connected with the CPLD and the high-speed interface;
the hard disk backboard cable connector interface is connected to the high-speed interface of the control board through an NVME hard disk cable.
As a further improvement of the hard disk backboard connecting device supporting the hard disks with various bit widths, the control board comprises a main board and an RAID board;
the NVME hard disk cable comprises a first-width NVME hard disk cable, a second-width NVME hard disk cable and a third-width NVME hard disk cable;
the control end comprises a CPU and a RAID; the CPU is arranged on the mainboard, and the RAID is arranged on the RAID board;
and when the control end is a CPU, the CPU is connected with the CPLD through a VPP connector.
The invention has the beneficial effects that:
1. according to the hard disk backboard connecting method supporting the hard disks with various bit widths, the problem that the existing multi-mode hard disk backboard only supports x4 NVME and does not support x2 NVME and x1 NVME can be solved by using the in-board clock, setting cables and control circuits of NVME hard disks with different widths, so that various reduced-cost NVME hard disk specifications can be supported, and the NVME single-group RAID supports more hard disks, so that the specification number of the hard disk backboard is reduced, and the competitiveness of the whole system is improved;
2. the hard disk backboard connecting system supporting hard disks with various bit widths can solve the problem of hard disk reference clock sources after hard disks with different bit widths are switched by using an in-board clock in a backboard, solve the problem of topology switching between ports of an NVME hard disk and a CPU or an RAID card by using cables special for x4, x2 and x1, and accurately access the x4, x2 and x1 NVME hard disks by using a dial switch and a corresponding CPLD program to identify the working mode of the backboard, so that the lighting processing of the x4, x2 and x1 NVME hard disks is performed.
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 described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a hard disk backplane connecting to a motherboard in the prior art;
FIG. 2 is a schematic diagram of a RAID board structure connected to a hard disk backplane in the prior art;
fig. 3 is a schematic diagram of a hard disk backplane connection method supporting multiple bit-wide hard disks according to embodiment 1 of the present invention;
fig. 4 is a schematic diagram of a hard disk backplane connection apparatus supporting multiple bit widths of hard disks according to embodiment 2 of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood 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.
In the description of the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It is noted that in the description of the present invention
The CPU (Central Processing Unit) is a central Processing unit.
NVM Express (Non-Volatile Memory Express) is used for PCI Express additional storage register interface and command set, and industry standard software for a variety of operating systems.
RAID (redundant Arrays of Independent disks) is a redundant array of disks.
Ssd (solid State disk) is a solid State disk.
U.2 hard disks (namely NVME 2.5 inch SSD, SFF8639 interface is adopted) are butted with RAID cards, the technology is newly introduced, U.2 hard disks in the current market are mainly PCIE3.0 interfaces of x4, and one x8 RAID card only supports 2 x4 NVME groups of RAID; after PCIE3.0 is upgraded to PCIE4.0, PCIE5.0, and PCIE6.0 in the future, the bandwidth of the NVME hard disk may be further increased, and for the consideration of cost reduction, an NVME hard disk with an x2 interface or an x1 interface may appear.
SATA (Serial ATA interface) is a data transfer between a motherboard and a storage device.
SAS (Serial Attached SCSI) is a computer data transmission interface.
The I/O Input/Output (Input/Output) is divided into two parts, namely an IO device and an IO interface.
SGPIO is a method of serializing general purpose I/O signals.
CPLD (Complex Programmable Logic device) is a complex Programmable Logic device.
PCH (platform Controller hub) is an integrated south bridge of intel corporation.
VPP (virtual Pin Port) is an NVME management bus (physical form similar to I2C) dedicated to intel CPUs.
The SL cable is an SL unit strand type water-cooled cable.
It should be noted that, in the description of the present invention, the first width is x1 width; the second width is x2 width;
the third width is x4 width; the fourth width is x8 width.
Example 1
The embodiment of the invention provides a hard disk backplane connecting method supporting hard disks with various bit widths, which comprises the following steps as shown in fig. 3:
s100, a hard disk backboard cable connector interface and a hard disk connector interface in a hard disk backboard are arranged; packaging and compatible the hard disk backboard cable connector interface;
the number of the hard disk connector interfaces is eight, and the hard disk connector interfaces can support SATA/SAS hard disks with the width of x1, or NVME hard disks with the width of x4, NVME hard disks with the width of x2 and NVME hard disks with the width of x1,
the cable connector interface of the existing hard disk backplane is packaged and compatible, so that the cable connector interface of the hard disk backplane can support cables of NVME hard disks with widths of x1 and x2, and can be compatible in multiple modes when a CPU or RAID is docked; the interface of the hard disk backboard cable connector is a high-speed interface;
the high-speed interface comprises two high-speed SATA/SAS interfaces with the width of x4 and four high-speed NVME interfaces with the width of x 8;
for example, two slim line x4 high-speed connector interfaces and four slim line x8 high-speed connector interfaces;
the high-speed SATA/SAS interface with the width of two x4 supports a plurality of SATA/SAS hard disk modes, specifically comprises a SATA/SAS hard disk mode that 8 SATA/SAS hard disks are butted with a CPU PCH, or a SATA/SAS hard disk mode that a RAID/SAS card is butted;
the four high-speed NVME interfaces with the width of x8 support multiple NVME hard disk modes, specifically comprising an NVME hard disk mode for butting a CPU or an NVME hard disk mode for butting an RAID card;
and the CPLD on the hard disk backboard is used for processing hard disk control signals and is connected with the CPU/PCH/RAID/hard disk/BMC and the like.
S200, changing an implementation mode of an NVME interface, and enabling a reference clock of the NVME hard disk to use an in-board clock in a hard disk backboard, compared with the prior art, when the reference clock comes from a CPU or an RAID card, and the CPU, the RAID card and the NVME hard disk need to work, modes of different sources of the reference clock are not needed any more, wherein the modes of the different sources can realize the modes of the different sources of the CPU, the RAID card and the NVME hard disk by changing the configuration of the CPU, the RAID card and the NVME hard disk; the problem that in an original homologous mode, when hard disks with the widths of X4, X2 and X1 are switched, reference clocks cannot be switched simultaneously is solved;
s300, designing special cables of NVME hard disks with different widths, wherein the special cables of the NVME hard disks with different widths specifically comprise a special cable of an NVME hard disk with a width of x4, a special cable of an NVME hard disk with a width of x2 and a special cable of an NVME hard disk with a width of x 1;
the controller on the control panel is butted through special cables of NVME hard disks with different widths, and the control panel comprises a mainboard or an RAID (redundant array of independent disks) board; the controller comprises a CPU or RAID;
the CPU is arranged on the mainboard, and the RAID is arranged on the RAID board;
when an NVME hard disk with the width of x1 is in butt joint with a CPU, connecting 1 high-speed NVME interface with the width of x8 on a mainboard to four high-speed NVME interfaces with the width of x8 on a hard disk backplane through a special cable of the NVME hard disk with the width of x1, and sending a group of x8 PCIe signals on the mainboard to 8 NVME hard disks with the width of x1 in the hard disk backplane for driving the 8 NVME hard disks with the width of x1 in the hard disk backplane;
when an NVME hard disk with the width of x2 is in butt joint with a CPU, connecting 1 high-speed NVME interface with the width of x8 on a mainboard to two high-speed NVME interfaces with the width of x8 on a hard disk backplane through a special cable of the NVME hard disk with the width of x2, and sending a group of x8 PCIe signals on the mainboard to 4 NVME hard disks with the width of x2 in the hard disk backplane for driving the 4 NVME hard disks with the width of x2 in the hard disk backplane;
when an NVME hard disk with the width of x4 is in butt joint with a CPU, connecting 1 high-speed NVME interface with the width of x8 on a mainboard to one high-speed NVME interface with the width of x8 on a hard disk backplane through a special cable of the NVME hard disk with the width of x4, and sending a group of x8 PCIe signals on the mainboard to 2 NVME hard disks with the width of x4 in the hard disk backplane for driving 2 NVME hard disks with the width of x4 in the hard disk backplane;
s400, adding a dial switch and connecting the dial switch with the CPLD; connecting a dial switch with a CPLD in a hard disk backboard, wherein the CPLD identifies a working mode through the dial switch and performs lighting processing according to the working mode, and the dial switch is used for indicating the hard disk backboard and connecting a CPU whether the working mode is in an NVME hard disk working mode with the width of x4 or an NVME hard disk working mode with the width of x2 or an NVME hard disk working mode with the width of x 1;
the CPLD identifies the working mode of the CPU connected with the hard board backboard according to the indication of the dial switch,
when the CPU is in the working mode of the NVME hard disk with the width of x4, the CPU on the mainboard inputs a VPP address signal of the CPU to a CPLD of the hard disk backboard through a VPP connector, wherein the VPP address signal is a group of VPP address signals of x8 PCIe on the mainboard, the address signals correspond to 2 NVME hard disks with the width of x4, the CPU can use a VPP command corresponding to the VPP address signal to access and control the working state of the corresponding 2 NVME hard disks with the width of x4, and the CPLD analyzes the corresponding VPP command and performs lighting processing on the two NVME hard disks with the width of x 2;
when the CPU is in the working mode of the NVME hard disk with the width of x2, the CPU on the mainboard inputs a VPP address signal of the CPU to a CPLD of a hard disk backboard through a VPP connector, the address signal corresponds to 4 NVME hard disks with the width of x2, the CPU can use a VPP command corresponding to the VPP address signal to access and control the working state of the corresponding 4 NVME hard disks with the width of x2, and the CPLD analyzes the corresponding VPP command and performs lighting processing on the four NVME hard disks with the width of x 2;
when the CPU is in the working mode of the NVME hard disk with the width of x1, the CPU on the mainboard inputs a VPP address signal of the CPU to a CPLD of a hard disk backboard through a VPP connector, the address signal corresponds to 8 NVME hard disks with the width of x1, the CPU can use a VPP command corresponding to the VPP address signal to access and control the working state of the corresponding 8 NVME hard disks with the width of x1, and the CPLD analyzes the corresponding VPP command and performs lighting processing on the 8 NVME hard disks with the width of x 1;
it should be noted that, when the CPU is connected to the hard disk, and the high-speed signal of the NVME hard disk is connected to the CPU, the hard disk needs to be turned on by the VPP address signal of the CPU, and the VPP address signal is a single signal cable connected without sharing a socket with the sl cable, and the VPP address signal of the CPU may correspond to the NVME signal of X8, the NVME signal of X4, or the NVME signal of X16, so that different numbers of NVME hard disks can be controlled by the NVME signals of different widths corresponding to the VPP address signal.
The above embodiments are all for explaining the way that the CPU processes the NVME hard disk in the case of connecting the motherboard, the following embodiments are for explaining the way that the RAID processes the NVME hard disk in the case of connecting the RAID board,
when the connection is a RAID board, the manner of processing the NVME hard disk by the RAID is substantially the same as the method of processing the NVME hard disk by the CPU, and the specific embodiment is as follows:
when an NVME hard disk with the width of x1 is in butt joint with an RAID, connecting 1 high-speed NVME interface with the width of x8 on the RAID board to four high-speed NVME interfaces with the width of x8 on a hard disk backplane through a special cable of the NVME hard disk with the width of x1, and sending a group of x8 PCIe signals on a mainboard to 8 NVME hard disks with the width of x1 in the hard disk backplane for driving the 8 NVME hard disks with the width of x1 in the hard disk backplane;
when an NVME hard disk with the width of x2 is in butt joint with an RAID, connecting 1 high-speed NVME interface with the width of x8 on the RAID board to two high-speed NVME interfaces with the width of x8 on a hard disk backplane through a special cable of the NVME hard disk with the width of x2, and sending a group of x8 PCIe signals on the RAID board to 4 NVME hard disks with the width of x2 in the hard disk backplane for driving the 4 NVME hard disks with the width of x2 in the hard disk backplane;
when an NVME hard disk with the width of x4 is in butt joint with an RAID, connecting 1 high-speed NVME interface with the width of x8 on the RAID board to a high-speed NVME interface with the width of x8 on a hard disk backplane through a special cable of the NVME hard disk with the width of x4, and sending a group of x8 PCIe signals on the RAID board to 2 NVME hard disks with the width of x4 in the hard disk backplane for driving 2 NVME hard disks with the width of x4 in the hard disk backplane;
a dial switch is added and connected with the CPLD; the dial switch is used for indicating a hard disk backboard and connecting RAID whether in the working mode of an NVME hard disk with the width of x4 or the working mode of an NVME hard disk with the width of x2 or the working mode of an NVME hard disk with the width of x 1;
the CPLD identifies the working mode of the RAID connected with the hard board back plate according to the indication of the dial switch;
when the RAID is in the operating mode of the NVME hard disks with the width of x4, the RAID on the RAID board inputs an I2C signal to the CPLD of the hard disk backplane, the I2C signal corresponds to 1 NVME hard disk with the width of x4, the RAID can control the operating state of the corresponding 1 NVME hard disk with the width of x4 by using the I2C signal, the CPLD analyzes the corresponding I2C signal, and performs lighting processing on the 1 NVME hard disk with the width of x 4;
when the RAID is in the operating mode of the NVME hard disks with the width of x2, the RAID on the RAID board inputs an I2C signal to the CPLD of the hard disk backplane, the I2C signal corresponds to 2 NVME hard disks with the width of x2, the RAID can control the operating state of the corresponding 2 NVME hard disks with the width of x2 by using the I2C signal, the CPLD analyzes the corresponding I2C signal, and performs lighting processing on the two NVME hard disks with the width of x 2;
when the RAID is in the operating mode of the NVME hard disks with the width of x1, the RAID on the RAID board inputs the I2C signal to the CPLD of the hard disk backplane, the I2C signal corresponds to 4 NVME hard disks with the width of x1, the RAID can use the I2C signal to control the operating state of the corresponding 4 NVME hard disks with the width of x1, the CPLD analyzes the corresponding I2C signal, and performs lighting processing on the 4 NVME hard disks with the width of x 1.
It should be noted that there is only one I2C signal in the slot with the width of x4, so in this embodiment, one I2C signal corresponds to 1 NVME hard disk with the width of x4, 2 NVME hard disks with the width of x2, and 4 NVME hard disks with the width of x 1.
Example 2
An embodiment of the present invention further provides a hard disk backplane connecting device supporting hard disks with multiple bit widths, as shown in fig. 4, including: a hard disk back plate and a control plate;
the hard disk backboard is provided with a CPLD, a plurality of hard disk connector interfaces, a hard disk backboard cable connector interface, a dial switch and an NVME hard disk;
the plurality of hard disk connector interfaces are connected with the NVME hard disk;
the CPLD is respectively connected with the plurality of hard disks and the dial switch;
the control panel is internally provided with a control end and a high-speed interface, and the control end is connected with the high-speed interface and the CPLD; the control board comprises a main board and an RAID board;
and a hard disk backboard cable connector interface of the hard disk backboard is connected to the high-speed interface of the control board through an NVME hard disk cable.
The hard disk backplane in this embodiment is an 8-disk hard disk backplane; the hard disk back plate supports 2.5-inch hard disks or 3.5-inch hard disks, and simultaneously supports multiple working modes, such as SATA/SAS hard disks for butting CPU PCH, SATA/SAS hard disks for butting RAID/SAS cards, U.2 hard disks for butting CPU and U.2 hard disks for butting RAID cards.
The number of the hard disk connector interfaces is eight, and the hard disk connector interfaces can support SATA/SAS hard disks with the width of x1 or NVME hard disks with the width of x4 at present, and can be packaged and compatible with the cable connector interfaces of the back plate of the present hard disk, so that the cable connector interfaces of the back plate of the hard disk can support cables of NVME hard disks with the widths of x1 and x 2;
the high-speed interface comprises two high-speed SATA/SAS interfaces with the width of x4 and four high-speed NVME interfaces with the width of x 8;
for example, two slim line x4 high-speed connector interfaces and four slim line x8 high-speed connector interfaces;
the hard disk backplane supports 2 high-speed interfaces (such as Slim line x4 high-speed connector interfaces) with the width of x4, SATA/SAS hard disk modes for interfacing with a CPU PCH, or SATA/SAS hard disk modes for interfacing with a RAID/SAS card. The high-speed interface provides SATA/SAS signal interfaces (8 in total) of x1 for each 2.5-inch SATA/SAS hard disk, provides 1 SGPIO control interface (2 in total) for each 4 hard disks, analyzes the control signals such as lighting of the hard disks in the CPLD, and provides functions such as lighting for each hard disk.
The control board comprises a main board and an RAID board; the NVME hard disk cables comprise an NVME hard disk cable with a width of x1, an NVME hard disk cable with a width of x2 and an NVME hard disk cable with a width of x 4; the control end comprises a CPU and a RAID; the CPU is arranged on the mainboard, and the RAID is arranged on the RAID board;
and when the control end is a CPU, the CPU is connected with the CPLD through a VPP connector.
It should be noted that, in the description of the present invention, the number of NVME hard disks in the hard disk backplane is determined according to NVME hard disks with different widths, when an NVME hard disk with a width of x1 needs to be driven, an NVME hard disk cable with a width of x1 is selected, and the number of NVME hard disks with a width of x1 is at least 8;
when an NVME hard disk with the width of x2 needs to be driven, selecting an NVME hard disk cable with the width of x2, wherein the number of the NVME hard disks with the width of x1 is at least 4;
when an NVME hard disk with the width of x4 needs to be driven, an NVME hard disk cable with the width of x4 is selected, and the number of the NVME hard disks with the width of x4 is at least 2.
The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (10)

1. A hard disk backboard connecting method supporting hard disks with various bit widths is characterized by comprising the following steps: packaging and compatible the cable connector interface of the hard disk backboard;
setting a reference clock of a hard disk as an in-board clock in the hard disk backboard;
designing cables of hard disks with different widths, and butting a controller through the cables;
setting a dial switch, connecting the dial switch with a CPLD, and identifying a working mode by the CPLD through the dial switch and carrying out lighting treatment according to the working mode.
2. The method for connecting a hard disk backplane supporting hard disks with multiple bit widths according to claim 1, wherein: the hard disk is an NVME hard disk;
the cable includes: the cable of the NVME hard disk with the first width, the cable of the NVME hard disk with the second width and the cable of the NVME hard disk with the third width;
the cable connector interface is an NVME interface, and the width of the NVME interface is a fourth width.
3. The method for connecting a hard disk backplane supporting hard disks with multiple bit widths according to claim 2, wherein: the step of docking a controller via the cable further comprises:
when the cable of the NVME hard disk with the first width is used for butting the controller, connecting an NVME interface with a fourth width on a control board with the four NVME interfaces with the fourth width on the hard disk backboard through the cable of the NVME hard disk with the first width;
and sending a PCIe signal to the NVME hard disk with the first width in the hard disk backboard, and driving the NVME hard disk with the first width.
4. The method for connecting a hard disk backplane supporting hard disks with multiple bit widths according to claim 3, wherein: the step of docking a controller via the cable further comprises:
when a cable of the NVME hard disk with a second width is used for butting a controller, connecting an NVME interface with a fourth width on the control board with two NVME interfaces with the fourth width on the hard disk backboard through a cable of the NVME hard disk with the second width;
and sending a PCIe signal to the NVME hard disk with the second width in the hard disk backboard, and driving the NVME hard disk with the second width.
5. The method for connecting a hard disk backplane supporting hard disks with multiple bit widths according to claim 2, wherein: the CPLD identifies the working mode through the dial switch, and the step of lighting according to the working mode further comprises the following steps:
the working modes comprise a working mode of an NVME hard disk with a third width, a working mode of an NVME hard disk with a second width and a working mode of an NVME hard disk with a first width;
when the working mode is the working mode of the NVME hard disk with the third width, the control end inputs a signal to the CPLD, and the signal corresponds to at least one NVME hard disk with the third width;
and the CPLD analyzes the signal and controls the corresponding NVME hard disk to carry out lighting processing.
6. The method for connecting a hard disk backplane supporting hard disks with multiple bit widths according to claim 5, wherein:
when the working mode is the working mode of the NVME hard disk with the second width, the control end inputs signals to the CPLD, and the signals correspond to at least two NVME hard disks with the second width;
and the CPLD analyzes the signal and controls the corresponding NVME hard disk to carry out lighting processing.
7. The method for connecting a hard disk backplane supporting hard disks with multiple bit widths according to claim 5, wherein:
when the working mode is the working mode of the NVME hard disk with the first width, the control end inputs signals to the CPLD, and the signals correspond to at least four NVME hard disks with the second width;
and the CPLD analyzes the signal and controls the corresponding NVME hard disk to carry out lighting processing.
8. The method for connecting a hard disk backplane supporting hard disks with multiple bit widths according to any one of claims 5 to 7, wherein: the control board comprises a main board and a RAID board; the control end comprises a CPU and a RAID; the signals include a VPP signal and an I2C signal;
the CPU inputs a VPP signal to the CPLD through a VPP controller; the RAID inputs an I2C signal to the CPLD.
9. The utility model provides a support hard disk backplate connecting device of multiple bit wide hard disk which characterized in that includes: a hard disk back plate and a control plate;
the hard disk backboard is provided with a CPLD, a hard disk connector interface, a hard disk backboard cable connector interface, a dial switch and an NVME hard disk; the dial switch is connected with the CPLD; the CPLD is connected with a plurality of hard disks; the hard disk connector interface is connected with the NVME hard disk;
the control panel is provided with a control end and a high-speed interface; the control end is respectively connected with the CPLD and the high-speed interface;
the hard disk backboard cable connector interface is connected to the high-speed interface of the control board through an NVME hard disk cable.
10. The device according to claim 9, wherein the device comprises: the control board comprises a main board and a RAID board;
the NVME hard disk cable comprises a first-width NVME hard disk cable, a second-width NVME hard disk cable and a third-width NVME hard disk cable;
the control end comprises a CPU and a RAID; the CPU is arranged on the mainboard, and the RAID is arranged on the RAID board;
and when the control end is a CPU, the CPU is connected with the CPLD through a VPP connector.
CN202110319360.8A 2021-03-25 2021-03-25 Method and device for connecting hard disk backboard supporting multiple-bit-width hard disks Active CN113190084B (en)

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