CN111665913A - M.2 Connector, M.2 Module Assembly, and System Tray - Google Patents

Abstract

The present application provides an M.2 connector, an M.2 module assembly, and a system disk. The system disk includes: a PCIe backplane. The PCIe backplane is provided with two accommodating areas for M.2 module components. The M.2 The accommodating area of the module assembly is used to accommodate the M.2 module assembly. Since the size of the M.2 module assembly is relatively small, two M.2 .2 The module components are arranged on the PCIe backplane to realize that the system disk supports hard RAID1. The PCIe backplane only needs to occupy one slot and occupies a small space. Therefore, the storage density of the server is improved, and the system performance of the server is improved.

Description

M.2 Connector, M.2 Module Assembly, and System Tray

technical field

The present application relates to chip technology, and in particular, to an M.2 connector, an M.2 module assembly and a system disk.

Background technique

With the popularity of distributed storage, big data or software-defined storage (SDS), in many applications such as virtual storage area network (virtual storage area network, vSAN), distributed file system (Ceph) or storage space Storage Spaces Direct (S2D), etc., in order to improve the reliability and security of storage, the system disk and data disk are separated, and the system disk supports the requirements of redundant array of independent disks (RAID), so as to Optimize the application and improve the system robustness of the application.

In the prior art, a system disk usually implements a RAID array by using two 2.5-inch hard disks. Therefore, the system disk needs to occupy two 2.5-inch hard disk slots in the server.

However, in the manner of the prior art, the storage density of the server is affected.

SUMMARY OF THE INVENTION

The present application provides an M.2 connector, an M.2 module assembly and a system disk to improve the storage density of a server.

In a first aspect, the present application provides a system disk, comprising: a high-speed serial computer expansion bus standard PCIe backplane, the PCIe backplane is provided with two accommodating areas for M.2 module components, and the M.2 module components contain The storage area is used to accommodate M.2 module components.

Due to the relatively small size of the M.2 module assembly, two M.2 module assemblies are arranged on the PCIe base plate by arranging accommodating areas for two M.2 module assemblies on the PCIe base plate to realize that the system disk supports hard RAID1 , the PCIe backplane only needs to occupy one slot and occupies a small space. Therefore, the storage density of the server is improved, and the system performance of the server is further improved.

In a possible implementation manner, the PCIe backplane is further provided with an onboard RAID1 chip.

By arranging the RAID1 chip on the PCIe backplane, the PCIe slot occupied by the external RAID1 chip is saved, and the storage density is further improved.

In a possible implementation manner, one end of the accommodating area of each M.2 module assembly is further provided with a backplane connector, and the backplane connector is hot-pluggable with the connection base of the M.2 connector. interface matches.

By setting the backplane connector that matches the hot-plugging interface of the connection base of the M.2 connector, the hot-plugging of the M.2 connector is realized, and the hot-plugging of the M.2 module assembly is further realized, which is convenient to replace the M. 2 module components, easy to maintain the system tray.

In a possible implementation manner, the backplane connector is a serial connection small computer system interface SAS connector or a small form factor pluggable SFP+ connector.

By setting the backplane connector as a SAS connector or an SFP+ connector, the versatility of the connector is further improved.

In a possible implementation manner, the PCIe backplane is a PCIe half-height half-length card backplane.

By designing on the standard PCIe half-height half-length card backplane, the versatility of the system disk is improved.

In a possible implementation manner, the method further includes: two M.2 module assemblies, the two M.2 module assemblies are respectively placed in the accommodating areas of the two M.2 module assemblies.

In a second aspect, the present application provides an M.2 connector, including:

A connection base, which is provided with an M.2 module accommodating slot, one end of the connection base is provided with an interface for hot swapping, and the other end of the connection base is provided with a limiter, the limit The piece is used to confine the M.2 module in the accommodating slot.

Since the connection base has a hot-plugging interface, the connection base can realize hot-plugging. Since the connection base is provided with an M.2 module accommodating slot, the M.2 module is placed in the M.2 module's container. In the slot, the M.2 module is hot-swapped and inserted indirectly through the connection base, which is convenient for maintenance of the M.2 module.

In a possible implementation manner, the interface for hot swapping is a gold finger.

By using the gold finger as the hot-plug interface, its versatility is improved.

In a possible implementation manner, the limiting member is a baffle, the suspended end of the baffle points to one end of the interface used for hot-plugging of the connection base, and the plane of the baffle is parallel to the The bottom surface of the receiving slot.

In a third aspect, the present application provides an M.2 module assembly, comprising: an M.2 module and the M.2 connector according to any one of the second aspects, wherein the M.2 module is placed on the M.2 module. 2 in the accommodating slot of the module.

Since the M.2 connector can be hot-swapped, the M.2 module is placed in the M.2 module's accommodating slot. Therefore, the M.2 module is indirectly hot-swappable by connecting the base, making the M.2 module easy to use. maintain.

Description of drawings

1 is a schematic structural diagram of an M.2 connector provided by the application;

FIG. 2 is another schematic structural diagram of the M.2 connector provided by the application;

3 is a schematic structural diagram of an M.2 module assembly provided by this application;

4 is a schematic structural diagram of a system disk provided by the present application;

FIG. 5 is another schematic structural diagram of the system disk provided by the application;

FIG. 6 is another schematic structural diagram of a system disk provided by the present application;

7 is another schematic structural diagram of a system disk provided by the present application;

FIG. 8 is a top view of the system disk shown in FIG. 7;

FIG. 9 is a schematic diagram of the logic of the system disk provided by the present application.

Detailed ways

RAID 1 realizes data redundancy through disk data mirroring, generating mutually backup data on pairs of independent disks. When the original data is busy, the data can be read directly from the mirror copy, so RAID 1 can improve the read performance. RAID 1 provides high data security and availability. When a disk fails, the system can automatically switch to read and write on the mirror disk without reorganizing the failed data.

Its working principle is: RAID1 forms a RAID disk array with two hard disks, and its capacity is only equal to the capacity of one hard disk, because the other one is only used as a data "mirror". A RAID 1 disk array is a more reliable array because it always maintains a complete backup of data. The data read is faster than a single hard disk, because the data will be read from the faster of the two hard disks. RAID 1 disk arrays generally support "hot swapping," which means that hard drives in the array can be removed or replaced while the system is running, without interrupting the system. RAID 1 disk arrays are very secure. RAID 1 disk arrays are mainly used in occasions where data security is very high and the damaged data is required to be recovered quickly.

In order to further improve the performance of the system, the present application separates the system disk from the data disk, and enables the system disk to support the requirements of hard RAID1. The system disk supports hard RAID1 without occupying the processing power of a central processing unit (Central Processing Unit, CPU). Therefore, , which can further improve the performance of the system.

In this application, when the system disk supports hard RAID1, the traditional 2.5-inch hard disk is replaced by an M.2 module. Since the M.2 module is small in size, two M.2 modules can be installed on one PCIe backplane and one PCIe backplane Occupying one PCIe slot, therefore, the storage density of the server is improved, and further, the system performance of the server is improved.

Among them, M.2 modules can choose different sizes, for example: 2280.

The technical solutions of the present application will be described in detail below with specific examples. The following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

FIG. 1 is a schematic structural diagram of the M.2 connector provided by the application. As shown in FIG. 1 , the M.2 connector 200 includes: a connection base 1, and the connection base 1 is provided with an M.2 module accommodation In the slot 11 , one end of the connection base 1 is provided with an interface 12 for hot plugging, and the other end of the connection base 1 is provided with a limiting member 13 , which is used to limit the M.2 module to the accommodating slot 11 .

When in use, by placing the M.2 module in the accommodating slot 11 , the M.2 module is restricted in the accommodating slot 11 by the limiting member 13 to prevent it from shaking.

When the M.2 module needs to be installed, the M.2 module and the M.2 connector can be inserted into the system disk as a whole, so that the hot-swappable interface 12 connected to the base 1 is inserted into the backplane connector of the system disk; when When the M.2 module needs to be replaced, pull out the M.2 module and the M.2 connector as a whole from the system disk.

In the embodiment of the M.2 connector shown in FIG. 1, since an interface for hot-plugging is provided at one end of the connection base, the connection base can realize hot-plugging, because the M.2 connector is provided on the connection base. 2 module accommodating slot, place the M.2 module in the accommodating slot of the M.2 module, and indirectly realize the hot swap of the M.2 module through the connection base, so as to facilitate the maintenance of the M.2 module.

FIG. 2 is another schematic structural diagram of the M.2 connector provided by the application, and FIG. 2 is based on the embodiment shown in FIG. 1 , the interface 12 for hot swapping and plugging is realized through gold fingers, thereby improving the versatility of the interface. , making the application more extensive.

In the embodiment shown in FIG. 1 or FIG. 2 , optionally, the limiting member 12 can be realized by a blocking piece, the suspended end of the blocking piece points to one end of the interface used for hot swap of the connection base, and the planes of the blocking piece are parallel to each other. The bottom surface of the accommodating slot, thus, confines the M.2 module within the accommodating slot 11 .

FIG. 3 is a schematic structural diagram of an M.2 module assembly provided by this application, as shown in FIG. 3 , including: an M.2 module 100 and an M.2 connector 200 , and the M.2 module 100 is placed on the M.2 module in the accommodating slot. The structure of the M.2 connector 200 is shown in FIG. 1 or FIG. 2 , and details are not repeated here.

In the embodiment of the M.2 module assembly shown in FIG. 3 , since the M.2 connector can realize hot swapping, the M.2 module is placed in the accommodating slot of the M.2 module and can be connected through M.2 The connection base of the device indirectly realizes the hot swap of the M.2 module, which makes the M.2 module easy to maintain.

FIG. 4 is a schematic structural diagram of a system disk provided by the application. As shown in FIG. 4 , the system disk includes: a high-speed serial computer expansion bus standard (Peripheral Component Interconnect express, PCIe) backplane 41, and the PCIe backplane 41 is provided with The accommodating areas 411 of the two M.2 module assemblies are used for accommodating the M.2 module assemblies.

In the system disk embodiment shown in FIG. 4 , due to the relatively small size of the M.2 module assembly, two M.2 The components are arranged on the PCIe backplane to realize that the system disk supports hard RAID1. The PCIe backplane only needs to occupy one slot and occupies a small space. Therefore, the storage density of the server is improved, and the system performance of the server is further improved.

FIG. 5 is another schematic structural diagram of the system disk provided by the present application. FIG. 5 is based on the embodiment shown in FIG. 4 , and further, the PCIe backplane 41 is further provided with an onboard RAID1 chip 412 .

In the system disk embodiment shown in FIG. 5 , by arranging the RAID1 chip 412 on the PCIe backplane 41 , the PCIe slot occupied by the external RAID1 chip is saved, and the storage density is further improved.

FIG. 6 is another schematic structural diagram of the system disk provided by the application, and FIG. 6 is based on the embodiment shown in FIG. 5 , and further, one end of the accommodating area 411 of each M. The backplane connector 413, the backplane connector 413 is matched with the hot-plug interface of the M.2 connector connected to the base.

In the embodiment of the system disk shown in FIG. 6 , by setting the backplane connector that matches the hot-plugging interface of the connection base of the M.2 connector, the hot-plugging of the M.2 connector is realized, and the M.2 connector is further realized. Hot swap of module components, easy to replace M.2 module components, easy to maintain the system disk.

In the system disk embodiment shown in FIG. 6 , the backplane connector may be a Serial Attached Small Computer System Interface (SAS) connector or an SFP+ connector. By setting the backplane connector as a SAS connector Or a Small Form-Factor Pluggable (SFP+) connector to further improve the versatility of the connector.

Optionally, the backplane connector may also be a customized connector, which is not limited in this application.

In the above embodiment, it is a PCIe half-height half-length card backplane. By designing on the standard PCIe half-height half-length card backplane, the versatility of the system disk is improved.

FIG. 7 is another schematic structural diagram of the system disk provided by the present application, and FIG. 8 is a top view of the system disk shown in FIG. 7 . FIG. 7 further includes M.2 module assemblies 300 on the basis of the above embodiments, and two M.2 module assemblies 300 are respectively placed in the accommodating areas of the two M.2 module assemblies .

FIG. 9 is a schematic diagram of the logic of the system disk provided by the application. As shown in FIG. 9 , the RAID1 chip can be a chip commonly used in the industry, such as: Broadcom, PMC RAID chip, which supports SAS/, Serial Advanced Technology Attachment (Serial Advanced Technology Attachment, SATA) interface M.2 module. Alternatively, the RAID1 chip can also choose a RAID chip (such as SAS3508 from Broadcom, etc.) that supports the Tri mode feature or use a PCIe Switch chip to support the M.2 module of the PCIe interface.

Claims (10)

1. A system tray, comprising:

the PCIe backplane comprises a PCIe backplane of a high-speed serial computer expansion bus standard, wherein the PCIe backplane is provided with at least two accommodating areas of M.2 module assemblies, and the accommodating areas of the M.2 module assemblies are used for accommodating the M.2 module assemblies.

2. The system disk of claim 1, wherein an on-board Redundant Array of Independent Disks (RAID) chip is further disposed on the PCIE backplane.

3. System tray according to claim 1 or 2, characterized in that one end of the receiving area of each m.2 module component is further provided with a backplane connector, which mates with a hot-pluggable interface of a connection chassis of an m.2 connector.

4. The system tray of claim 3, wherein the backplane connector is a serial attached small computer system interface (SAS) connector or a small pluggable (SFP +) connector.

5. The system tray of claim 1, wherein the PCIe backplane is a PCIe half-height half-length card backplane.

6. The system tray of any of claims 1-5, further comprising:

the two M.2 module assemblies are respectively placed in the accommodating areas of the two M.2 module assemblies.

7. An m.2 connector, comprising:

the connection base, be provided with the storage tank of M.2 module on the connection base, the one end of connecting the base is provided with the interface that is used for hot plug, the other end of connecting the base is provided with the locating part, the locating part be used for with the M.2 module be restricted in the storage tank.

8. The m.2 connector of claim 7, wherein the interface for hot-plugging is a gold finger.

9. The m.2 connector according to claim 7 or 8, wherein the limiting member is a blocking piece, a free end of the blocking piece points to one end of the connecting base, which is used for the interface of the hot plug, and a plane of the blocking piece is parallel to a bottom surface of the accommodating groove.

10. An m.2 module assembly, comprising: an m.2 module and an m.2 connector as claimed in any one of claims 7 to 9, the m.2 module being placed in a receiving slot of the m.2 module.

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