CN108804360A - A kind of storage card of compatible SAS/SATA/NVME hard disks - Google Patents

本发明公开了一种兼容SAS/SATA/NVME硬盘的存储卡，属于服务器硬盘技术领域。本发明的兼容SAS/SATA/NVME硬盘的存储卡，包括背板接口、主控芯片、电压转换器一、电压转换器二、CLOCK BUFFER和SWITCH，背板接口用于与背板相连接，所述主控芯片上设置有GPIO，电压转换器一与GPIO、背板接口分别连接，电压转换器二与GPIO、背板接口分别连接。该发明的兼容SAS/SATA/NVME硬盘的存储卡结构设计简单合理，能够自适应识别SAS硬盘、SATA硬盘和NVME硬盘，对硬盘进行统一管理和点灯控制，具有很好的推广应用价值。

The invention discloses a storage card compatible with SAS/SATA/NVME hard disks, belonging to the technical field of server hard disks. The storage card compatible with SAS/SATA/NVME hard disk of the present invention includes a backplane interface, a main control chip, a voltage converter one, a voltage converter two, CLOCK BUFFER and SWITCH, and the backplane interface is used to connect with the backplane, so The main control chip is provided with GPIO, the first voltage converter is connected to the GPIO and the backplane interface, and the second voltage converter is connected to the GPIO and the backplane interface respectively. The memory card compatible with SAS/SATA/NVME hard disks of the invention has a simple and reasonable structural design, can adaptively identify SAS hard disks, SATA hard disks and NVME hard disks, and perform unified management and lighting control on the hard disks, which has good promotion and application value.

一种兼容SAS/SATA/NVME硬盘的存储卡A memory card compatible with SAS/SATA/NVME hard drives

技术领域technical field

本发明涉及服务器硬盘技术领域，具体提供一种兼容SAS/SATA/NVME硬盘的存储卡。The invention relates to the technical field of server hard disks, and specifically provides a memory card compatible with SAS/SATA/NVME hard disks.

背景技术Background technique

硬盘是服务器中的重要硬件设备，服务器中有很多硬盘需要进行管理以及协议上的转换，存储卡是连接在主板和背板间的适配器，是为了实现对硬盘的管理以及总体提升性能。随着NVME硬盘的出现和使用，背板端已采用一个SFF-8639接口，可以同时支持三种硬盘，即SAS硬盘、SATA硬盘和NVME硬盘，当前需要存储卡也同时支持这种配置。The hard disk is an important hardware device in the server. There are many hard disks in the server that need to be managed and converted on the protocol. The memory card is an adapter connected between the main board and the backplane to realize the management of the hard disk and improve the overall performance. With the emergence and use of NVME hard disks, a SFF-8639 interface has been adopted on the backplane side, which can support three kinds of hard disks at the same time, namely SAS hard disk, SATA hard disk and NVME hard disk. At present, memory cards are required to support this configuration at the same time.

现有的NVME硬盘都是直接连接到主板上，通过PCIE链路连接到CPU上，存储卡只能支持SAS硬盘和SATA硬盘，进行管理，随着NVMe硬盘的出现和使用，由于协议、控制信号等的不同，当前的存储卡无法兼容此种硬盘。不能满足SAS硬盘、SATA硬盘和NVME硬盘三种硬盘同时挂接在同一个存储卡下，应用上不够灵活，不利于管理。Existing NVME hard disks are directly connected to the motherboard and connected to the CPU through a PCIE link. The memory card can only support SAS hard disks and SATA hard disks for management. With the emergence and use of NVMe hard disks, due to protocols and control signals The current memory card is not compatible with this kind of hard disk. It cannot be satisfied that the three hard disks of SAS hard disk, SATA hard disk and NVME hard disk are mounted under the same memory card at the same time, and the application is not flexible enough, which is not conducive to management.

发明内容Contents of the invention

本发明的技术任务是针对上述存在的问题，提供一种结构设计简单合理，能够自适应识别SAS硬盘、SATA硬盘和NVME硬盘，对硬盘进行统一管理和点灯控制的兼容SAS/SATA/NVME硬盘的存储卡。The technical task of the present invention is to address the above existing problems, to provide a simple and reasonable structural design, which can adaptively identify SAS hard disks, SATA hard disks and NVME hard disks, and perform unified management and lighting control on hard disks compatible with SAS/SATA/NVME hard disks. storage card.

为实现上述目的，本发明提供了如下技术方案：To achieve the above object, the present invention provides the following technical solutions:

一种兼容SAS/SATA/NVME硬盘的存储卡，包括背板接口、主控芯片、电压转换器一、电压转换器二、CLOCK BUFFER和SWITCH，背板接口用于与背板相连接，所述主控芯片上设置有GPIO，电压转换器一与GPIO、背板接口分别连接，电压转换器二与GPIO、背板接口分别连接，所述SWITCH与背板接口、电压转换器二、CLOCK BUFFER分别连接，且SWITCH与主控芯片相连接，CLOCK BUFFER与主控芯片相连接。A storage card compatible with SAS/SATA/NVME hard disks, including a backplane interface, a main control chip, a voltage converter one, a voltage converter two, CLOCK BUFFER and SWITCH, the backplane interface is used to connect to the backplane, the The main control chip is provided with GPIO, the voltage converter 1 is connected to GPIO and the backplane interface respectively, the voltage converter 2 is connected to GPIO and the backplane interface respectively, and the SWITCH is connected to the backplane interface, voltage converter 2 and CLOCK BUFFER respectively Connect, and SWITCH is connected with the main control chip, and CLOCK BUFFER is connected with the main control chip.

一个x8的背板接口可以支持8个SAS/SATA硬盘，或者2个x4的NVME硬盘。在数据传输的信号线上可以实现兼容，用一条链路来实现。由于SAS/SATA/NVME三种硬盘的点灯信号及控制信号不同，为同时支持SAS/SATA/NVME三种硬盘，对边带信号进行处理，并且由于线缆和接口的pin数量有限，需要存在复用的信号。A x8 backplane interface can support 8 SAS/SATA hard drives, or 2 x4 NVME hard drives. Compatibility can be realized on the signal line of data transmission, and a link can be used to realize it. Since the lighting signals and control signals of the three hard disks of SAS/SATA/NVME are different, in order to support the three hard disks of SAS/SATA/NVME at the same time, the sideband signals are processed, and due to the limited number of pins of cables and interfaces, complex used signal.

SAS硬盘和SATA硬盘采用通过GPIO传递的信号来管理硬盘的状态，NVME硬盘则采用新的点灯方案-VPP协议，一种IIC信号，每一位数据代表不同的状态。CLOCK BUFFER生成NVME启动工作需要的信号，通过线缆传到背板接口，进而传到背板端。SWITCH在CLOCKBUFFER和GPIO生成的两个信号之间切换，进而实现对SAS硬盘、SATA硬盘及NVME的控制。SAS hard disks and SATA hard disks use signals transmitted through GPIO to manage the status of hard disks, while NVME hard disks use a new lighting scheme-VPP protocol, an IIC signal, and each bit of data represents a different state. The CLOCK BUFFER generates the signal required for NVME to start work, and transmits it to the backplane interface through the cable, and then to the backplane end. SWITCH switches between the two signals generated by CLOCKBUFFER and GPIO, and then realizes the control of SAS hard disk, SATA hard disk and NVME.

电压转换器一根据背板接口传来的背板信息，来判断是SAS硬盘或者SATA硬盘，还是NVME，进而SWITCH芯片的选择信号选择走GPIO或者CLOCK BUFFER，将信号通过线缆传递到背板控制硬盘的点灯。The voltage converter judges whether it is a SAS hard disk, a SATA hard disk, or NVME according to the backplane information transmitted from the backplane interface, and then the selection signal of the SWITCH chip chooses GPIO or CLOCK BUFFER, and transmits the signal to the backplane control through the cable Lighting of the hard disk.

本发明所述的存储卡设置在主板PCIE插槽上。The memory card of the present invention is arranged on the PCIE slot of the motherboard.

作为优选，所述背板接口采用SFF8643接口，即miniSAS HD。Preferably, the backplane interface adopts SFF8643 interface, that is, miniSAS HD.

作为优选，所述电压转换器一通过BP_TYPE、CTR_TYPE与背板接口相连接，用于回传背板状态。Preferably, the first voltage converter is connected to the backplane interface through BP_TYPE and CTR_TYPE for returning backplane status.

检测背板的BP_TYPE信号，如果为1则表明此时为NVME硬盘，SWITCH芯片的选择信号选择走CLOCK BUFFER，GPIO发送VPP协议信号。如果为0则表明此时为SAS硬盘或SATA硬盘，SWITCH芯片的选择信号选择走SGPIO的两个信号，GPIO发送SGPIO的另两个信号，通过线缆传递到背板控制硬盘的点灯。Detect the BP_TYPE signal of the backplane. If it is 1, it indicates that it is an NVME hard disk at this time. The selection signal of the SWITCH chip selects the CLOCK BUFFER, and the GPIO sends the VPP protocol signal. If it is 0, it means that it is a SAS hard disk or a SATA hard disk at this time. The selection signal of the SWITCH chip selects the two signals of SGPIO, and the GPIO sends the other two signals of SGPIO, which are transmitted to the backplane through the cable to control the lighting of the hard disk.

作为优选，所述电压转换器二通过SGPIO与SWITCH、背板接口分别连接。Preferably, the second voltage converter is respectively connected to the SWITCH and the backplane interface through the SGPIO.

作为优选，所述CLOCK BUFFER通过PCIE与SWITCH相连接。Preferably, the CLOCK BUFFER is connected to the SWITCH through PCIE.

作为优选，所述CLOCK BUFFER用于生成NVME所需的clock差分信号。Preferably, the CLOCK BUFFER is used to generate clock differential signals required by NVME.

作为优选，所述clock差分信号为100M。Preferably, the clock differential signal is 100M.

与现有技术相比，本发明的兼容SAS/SATA/NVME硬盘的存储卡具有以下突出的有益效果：所述兼容SAS/SATA/NVME硬盘的存储卡通过识别背板的控制信号不同，进行协议和边带信号的切换，能够自适应识别SAS/SATA硬盘与NVME硬盘，实现对不同种类的硬盘进行统一的管理和点灯控制，具有良好的推广应用价值。Compared with the prior art, the memory card compatible with the SAS/SATA/NVME hard disk of the present invention has the following outstanding beneficial effects: the memory card compatible with the SAS/SATA/NVME hard disk can perform protocol It can adaptively identify SAS/SATA hard disks and NVME hard disks, realize unified management and lighting control of different types of hard disks, and have good promotion and application value.

附图说明Description of drawings

图1是本发明所述兼容SAS/SATA/NVME硬盘的存储卡的示意图。FIG. 1 is a schematic diagram of a memory card compatible with a SAS/SATA/NVME hard disk according to the present invention.

具体实施方式Detailed ways

下面将结合附图和实施例，对本发明的兼容SAS/SATA/NVME硬盘的存储卡作进一步详细说明。The memory card compatible with SAS/SATA/NVME hard disks of the present invention will be further described in detail below with reference to the drawings and embodiments.

实施例Example

如图1所示，本发明的兼容SAS/SATA/NVME硬盘的存储卡设置在主板PCIE插槽上，包括miniSAS HD背板接口、主控芯片、第一电压转换器、第二电压转换器、CLOCK BUFFER和SWITCH。As shown in Figure 1, the memory card compatible with SAS/SATA/NVME hard disk of the present invention is arranged on the mainboard PCIE slot, comprises miniSAS HD backplane interface, main control chip, first voltage converter, second voltage converter, CLOCK BUFFER and SWITCH.

miniSAS HD背板接口用于与背板相连接。The miniSAS HD backplane interface is used to connect with the backplane.

主控芯片上设置有GPIO，电压转换器一与GPIO相连接，且电压转换器一通过BP_TYPE、CTR_TYPE与miniSAS HD背板接口相连接，用于回传背板状态。The main control chip is provided with GPIO, and the first voltage converter is connected to the GPIO, and the first voltage converter is connected to the miniSAS HD backplane interface through BP_TYPE and CTR_TYPE for returning the backplane status.

电压转换器二通过GPIOB与GPIO相连接，通过SGPIO与miniSAS HD背板接口相连接，且电压转换器二通过SGPIO与SWITCH相连接。Voltage converter 2 is connected to GPIO through GPIOB, connected to miniSAS HD backplane interface through SGPIO, and voltage converter 2 is connected to SWITCH through SGPIO.

CLOCK BUFFER通过PCIE与SWITCH相连接，且CLOCK BUFFER与主控芯片相连接。CLOCK BUFFER提供NVME硬盘启动工作需要的100M clock差分信号。CLOCK BUFFER is connected to SWITCH through PCIE, and CLOCK BUFFER is connected to the main control chip. CLOCK BUFFER provides the 100M clock differential signal required for NVME hard disk startup.

SWITCH与主控芯片、miniSAS HD背板接口分别连接，SWITCH在clock和SGPIO的两个信号之间切换。The SWITCH is connected to the main control chip and the miniSAS HD backplane interface respectively, and the SWITCH switches between the two signals of clock and SGPIO.

工作过程中，检测背板的BP_TYPE信号，如果为1，则表明此时为NVME硬盘，SWITCH芯片的选择信号选择走clock，GPIO发送VPP协议信号，对NVME硬盘进行管理和点灯控制。如果为0，则表明此时为SAS/SATA硬盘，SWITCH芯片的选择信号选择走SGPIO的两个信号，GPIO发送SGPIO的另两个信号，通过线缆传递到背板，对SAS/SATA硬盘进行管理和点灯控制。该存储卡实现了对不同种类的硬盘进行统一管理和点灯控制。During the working process, check the BP_TYPE signal of the backplane. If it is 1, it indicates that it is an NVME hard disk at this time. The selection signal of the SWITCH chip selects the clock, and the GPIO sends the VPP protocol signal to manage and control the lighting of the NVME hard disk. If it is 0, it means that it is a SAS/SATA hard disk at this time. The selection signal of the SWITCH chip selects the two signals of SGPIO. management and lighting control. The memory card realizes unified management and lighting control of different types of hard disks.

以上所述的实施例，只是本发明较优选的具体实施方式，本领域的技术人员在本发明技术方案范围内进行的通常变化和替换都应包含在本发明的保护范围内。The above-described embodiments are only preferred specific implementations of the present invention, and ordinary changes and replacements performed by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.