TWI467365B - Raid controlled semiconductor storage device, method for providing the same, and pci-express type raid controlled semiconductor storage device - Google Patents

Description

RAID-controlled semiconductor storage device and method of forming same, and PCI-Express type RAID-controlled semiconductor storage device

The present invention relates to a semiconductor storage device controlled by RAID. More particularly, the present invention relates to a PCI-Express type of storage device that provides data storage/reading services through a PCI-Express interface.

As people's demand for more computer storage capacity increases, research is actively pursued to find better solutions. There are various hard disk solutions that store/read data mechanically, such as data storage media. But unfortunately, hard disk data processing speed is often very slow. In particular, in the existing solution, an interface that cannot achieve the processing speed of the memory disk data with high-speed data login/output performance is still used between the data storage medium and the host. Therefore, the prior art solution cannot guarantee the reasonable use of the performance of the memory disk.

Embodiments of the present invention provide a PCI-Express type RAID-controlled storage device that supports low-speed data processing speed for a host. In particular, embodiments of the present invention provide for connection to more than one (ie, a set) of semiconductor memory devices (semiconductor storage devices (SSDs)) RAID controller. The SSD adjusts the synchronization of the data signals transmitted/received between the host and the memory disk by the PCI-Express interface during data communication between the host and the memory disk. At the same time, the support is memory magnetic. The high-speed data processing speed of the chip supports the performance of the memory and maximizes high-speed processing in the interface environment of the prior art.

According to an aspect of the present invention, a semiconductor storage device controlled by a RAID is provided, comprising: a memory magnetic disk portion including a plurality of semiconductor storage devices (SSD) memories having a plurality of semiconductor memories a magnetic disk; a RAID controller connected to the SSD memory disk portion; a host interface connecting the SSD memory disk and the host; and a controller unit connected to the RAID controller and adjusting the host interface Synchronizing the data signals transmitted between the portion and the SSD memory disk portion to control the communication speed between the host interface and the SSD memory disk portion.

According to a second aspect of the present invention, a RAID-controlled semiconductor storage device of the PCI-Express type includes a memory magnetic disk portion including a plurality of conductor storage devices having a plurality of semiconductor memories (semiconductor storage) Device, SSD) memory disk; RAID controller, connected to the above SSD memory disk; PCI-Express host face, connected between the SSD memory disk and the host; controller, connected to the above RAID The controller further adjusts synchronization of the data signals transmitted between the PCI-Express host interface and the SSD memory disk portion to control communication between the PCI-Express host interface and the SSD memory disk portion The controller unit includes: a memory control module that controls data registration/output of the SSD memory disk portion; DMA control a module for controlling the memory control module to store data to the SSD memory disk portion according to an instruction received from the host through the PCI-Express host interface, or to read data from the SSD memory disk portion The above information is provided to the host; the buffer is buffered according to the control of the DMA control module; and the synchronous control module synchronizes the communication speed of the data communication.

According to a third aspect of the present invention, a method for forming a semiconductor storage device controlled by a RAID is provided, comprising the steps of: providing a memory disk portion including a plurality of conductor storage devices having a plurality of semiconductor memories; (semiconductor storage device, SSD) memory magnetic disk; RAID controller, connected to the SSD memory magnetic disk portion; host interface, connected between the SSD memory magnetic disk and the host; controller unit, connected to the above RAID The controller further adjusts synchronization of the data signals transmitted between the host interface and the SSD memory disk portion to control the communication speed between the host interface and the SSD memory disk portion.

A PCI-Express type RAID-controlled storage device adjusts data transmitted/received between the host and the memory disk during data communication between the host and the memory disk via the PCI-Express interface. The synchronization of the signals enables the high-speed data processing speed of the memory disk to support the performance of the memory while supporting the low-speed data processing speed of the host, thereby maximizing the speed in the prior art interface environment. deal with.

The above-described features and other features of the present invention will become more apparent from the description of the appended claims.

100‧‧‧Semiconductor storage device (memory disk unit)

200‧‧‧ interface

300‧‧‧ Controller

310‧‧‧Memory Control Module

320‧‧‧DMA Control Module

330‧‧‧buffer

340‧‧‧Synchronous control module

350‧‧‧High Speed Interface Module

400‧‧‧Auxiliary power supply

500‧‧‧Power Control Department

600A‧‧‧ internal memory backup

600B‧‧‧ data backup

700‧‧‧Internal backup controller

800‧‧‧RAID controller

810‧‧‧ RAID-controlled SSD

900‧‧‧Status Monitor

1 is a schematic diagram of a RAID-controlled storage device of a PCI-Express type; FIG. 2 is a schematic diagram of a RAID controller connected to a set of SSDs; FIG. 3 is a schematic diagram of a structure of the high-speed SSD of FIG. 1; It is a schematic diagram of the structure of the controller unit of Fig. 1.

The above figures are not scaled. The above drawings are only schematic diagrams, not specific parameters of the invention. The above drawings are only illustrative of typical embodiments of the invention and, therefore, should not be construed as limiting the invention. In the above figures, like reference numerals indicate like elements.

Exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings in which FIG. However, the invention may be embodied in a variety of other forms and is not limited by the exemplary embodiments described herein. The purpose of these examples is to fully explain the scope of the invention to those skilled in the art. If the description of the embodiments of the present invention is unnecessarily obscured, the detailed description of the disclosed features and techniques will be omitted.

The terminology used in the description is for the purpose of describing particular embodiments only, and not limiting the invention. Meanwhile, the term "RAID" used in the present specification refers to a Redundant Array of Independent Disks (Redundant Array of Inexpensive Disks). In general, RAID technology is the way to store the same data at different locations (and therefore, repeatedly) on multiple hard disks. By storing the data on multiple floppy disks, the input/output operation can be repeated in a balanced manner to improve performance. Due to the increase of multiple magnetic sheets Mean time between failures (MTBF), therefore, repeated storage of data can also improve fault tolerance.

The materials (including technical and scientific terms) used in the specification have the same meaning as commonly understood by those skilled in the art unless specifically defined. Unless otherwise defined in the specification, the commonly used terms that are the same as the terms defined in the dictionary have meanings that are consistent with their meanings in the context of the related art and the present invention, and are not explained by the meaning of idealization or over-formalization. .

Hereinafter, a PCI-Express type RAID storage device of an embodiment will be described in detail with reference to the accompanying drawings.

As described above, embodiments of the present invention provide a PCI-Express type storage device that supports low-speed data processing speed for a host. In general, these controllers synchronize the data signals transmitted/received between the host and the memory disk by the PCI-Express interface during data communication between the host and the memory disk. At the same time, support For high-speed data processing speed of memory magnetic sheets, in order to support the performance of memory, high-speed processing is maximized in the interface environment of the prior art.

The PCI-Express type storage device adjusts a data signal transmitted/received between the host and the memory magnetic disk during a data communication between the host and the memory magnetic disk through a PCI-Express type interface. Synchronization, in order to support the high-speed data processing speed of the above-mentioned memory magnetic sheet while supporting the low-speed data processing speed of the above-mentioned host, to support the performance of the above-mentioned memory, and to perform high-speed processing in the prior art interface environment. . The PCI-Express technology is utilized in the exemplary embodiment, but other approaches are possible. For example, the present invention can employ SAS/SATA technology that provides SAS/SATA type storage devices using SAS/SATA interfaces. .

1 is a schematic diagram showing the structure of a PCI-Express (PCI-e) type RAID-controlled storage device (for example, providing a storage function to a serially connected computer device) according to an embodiment of the present invention. As shown in the figure, FIG. 1 shows an embodiment of a RAID-controlled PCI-Express type storage device, including: a memory magnetic disk portion (or high-speed semiconductor storage device 100) 100, including a plurality of volatile semiconductor memories. a plurality of memory disks of the body; a RAID controller 800 connected to the semiconductor storage device 100; (for example, a PCI-Express host) interface 200, providing a connection between the memory disk portion and the host computer; The auxiliary power supply unit 400 charges the power transmitted from the host through the PCI-Express host interface to maintain a constant power; and the power control unit 500 passes the power transmitted from the host through the host PCI-Express. The interface is supplied to the controller unit, the memory disk unit, the backup storage unit, and the backup control unit, and the power transmitted from the host through the host PCI-Express interface is interrupted or transmitted from the host. When an electric power error occurs, power is received from the auxiliary power supply unit, and power is supplied to the memory magnetic disk unit through the controller unit; The storage unit 600 stores the data of the memory disk unit; and the backup control unit 700 backs up the memory disk stored in the backup storage unit according to an instruction from the host or an error in power transmission from the host. Ministry of Information.

The memory magnetic disk unit 100 includes a plurality of memory magnetic sheets including a plurality of volatile semiconductor memories (for example, DDR, DDR2, DDR3, SDRAM) for high-speed data registration/output, and according to the above controller 300 controls input and output data. The memory magnetic sheet portion 100 may have a structure in which the memory magnetic sheets are arranged in parallel.

The PCI-Express host interface 200 is in the host and the memory disk unit 100. Provide connectivity between the two. The host can be a computer system or the like, and can have a PCI-Express interface and a power supply unit.

The controller unit 300 adjusts synchronization of data signals transmitted/received between the PCI-Express host interface 200 and the memory disk unit 100 to control the PCI-Express host interface 200 and the memory magnetic body. The data transmission/reception speed between the slice units 100.

2 is a detailed schematic diagram of a RAID controlled SSD 810. As shown, the PCI-e type RAID controller 800 is directly coupled to any number of SSDs 100. Among them, the optimal control of the SSD100 needs to be considered. Among them, the RAID controller 800 uses:

1. Support current backup/restore operation;

2. Provide additional and improved backup functions by performing the following operations: a) Judging by the internal backup controller (the user's invitation command (Order) or status monitor to detect power supply problems); b) Controlled by internal backup Invite data backup of the SSD; c) invite the internal backup device to the internal backup device to immediately back up the data; d) monitor the backup status of the SSD and the internal backup controller; and e) the status and end of the internal backup controller report.

3. Provide additional and improved Restore functions by performing the following operations: a) Resuming by the internal backup controller (user's invitation command or status monitor detects power supply issues); b) Controlled by internal backup Inviting to restore data to the SSD; c) The internal backup controller invites the internal backup device to immediately restore the data; d) the recovery status monitoring of the SSD and the internal backup controller; and e) the status and end operation report of the internal backup controller.

3 is a schematic diagram showing the structure of a high speed semiconductor memory device (SSD) 100. As shown, the SSD/memory disk unit 100 includes: (eg, a PCI-Express host) host interface (interface 200 shown in FIG. 1 or another interface as shown) 202, and a backup control module. A group 700 connected DMA (Direct Memory Access) controller 302, an ECC (Error Correction Code) controller, and one or more units 604 for controlling the memory 602 as a high speed storage device Memory controller 306.

Fig. 4 is a schematic view showing the structure of a controller unit used in the PCI-Express type storage device of the embodiment. As shown in FIG. 4, the controller unit 300 of the embodiment includes a memory control module 310 for controlling data registration/output of the memory disk unit 100, and a DMA control module 320 for controlling the memory control module. 310 storing data to the memory disk unit 100 according to an instruction received from the host through the PCI-Express host interface 200, or reading data from the memory disk unit 100 to provide the data to the host; The buffer 330 is controlled according to the control buffer data of the DMA control module; the synchronization control module 340 is received by the DMA control module 320 and the memory control module 310 under the control of the DMA control module 320. When the data signal corresponding to the data read by the memory magnetic disk unit 100 is provided, the communication data speed corresponding to the PCI-Express communication protocol is adjusted by adjusting the synchronization of the data signal to transmit the synchronous data signal to the PCI-Express host interface 200. And when receiving the data signal from the host by the PCI-Express host interface 200, The synchronization of the data signal is adjusted to have a transmission speed corresponding to a communication protocol (for example, PCI, PCI-x, PCI-e, etc.) used for the memory disk unit 100 to pass the DMA control module 320 and the memory. The body control module 310 transmits the synchronization signal to the memory disk unit 100, and the high-speed interface module 350 processes the data transmitted/received between the synchronization control module 340 and the DMA control module 320 at a high speed. Here, the high-speed interface module 350 includes a buffer having a double buffer structure and a buffer of a loop-and-loop configuration, and is buffered in the synchronous control module 340 and the DMA control module 320 by using the buffer. At the same time as the data transmitted/received, the data clock is adjusted to process the data transmitted/received between the above-described synchronization control module 340 and the DMA control module 320 at high speed without loss.

The auxiliary power supply unit 400 may be configured to be a rechargeable battery or the like. Therefore, the auxiliary power supply unit 400 is normally charged by the power transmitted from the host through the PCI-Express host interface 200 to maintain a constant power. The charged power source is supplied to the power source control unit 500 in accordance with the control of the power source control unit 500.

The power supply control unit 500 supplies power transmitted from the host to the controller unit 300, the memory magnetic sheet unit 100, the backup storage unit 600, and the backup control unit 700 via the PCI-Express host interface 200.

At the same time, when the power transmitted from the host by the PCI-Express host interface 200 is blocked or the power transmitted from the host exceeds a threshold, the power control unit 500 receives power from the auxiliary power unit 400 and passes the power. The controller unit 300 supplies the electric power to the memory magnet unit 100. The backup storage unit 600 is configured by a low-speed volatile storage device such as a hard disk to store the data of the memory disk unit 100.

The backup control unit 700 controls the data registration/output of the backup storage unit 600 to back up the data stored in the memory disk unit 100 in the backup storage unit 600, and based on the instruction from the host or from the host. When the transmitted power exceeds the threshold and the host power supply error occurs, the data stored in the memory disk unit 100 in the backup storage unit 600 is backed up.

While the exemplary embodiments have been illustrated and described, the embodiments of the invention may In the meantime, various changes may be made in the present invention to apply the specific conditions or materials to the technical contents of the present invention without departing from the scope of the invention. Therefore, the invention is not to be construed as being limited to the details of the details of the present invention.

A PCI-Express type RAID-controlled storage device adjusts data transmitted/received between the host and the memory disk during data communication between the host and the memory disk via the PCI-Express interface. The synchronization of the signals enables the high-speed data processing speed of the memory disk to support the performance of the memory while supporting the low-speed data processing speed of the host, thereby maximizing the speed in the prior art interface environment. deal with.

The above description of various aspects of the invention has been achieved for purposes of illustration and description. The present invention is not limited or limited, and various changes and modifications can be made. Changes and modifications which are obvious to the skilled person are within the scope of the invention as defined in the claims.

100‧‧‧Semiconductor storage device (memory disk unit)

200‧‧‧ interface

300‧‧‧ Controller

400‧‧‧Auxiliary power supply

500‧‧‧Power Control Department

600A‧‧‧ internal memory backup

600B‧‧‧ data backup

700‧‧‧Internal backup controller

800‧‧‧RAID controller

900‧‧‧Status Monitor

Claims (16)

A semiconductor storage device controlled by a RAID, comprising: a memory magnetic disk portion, comprising a plurality of semiconductor storage devices (SSD) memory magnetic disks having a plurality of semiconductor memories; and a RAID controller. Connecting to the SSD memory magnetic disk portion; a host interface connecting the SSD memory magnetic disk and the host; and a controller portion connected to the RAID controller and adjusting the host interface and the SSD memory magnetic body Synchronizing the data signals transmitted between the slices to control the communication speed between the host interface and the SSD memory disk portion, wherein the controller portion includes: a memory control module that controls the memory disk Data registration/output of the department; the DMA control module controls the memory control module to store data to the SSD memory disk portion according to an instruction received from the host through the PCI-Express host interface, or from the SSD The memory disk portion reads the data to provide the above data to the host; the buffer buffers the data according to the control of the DMA control module; The step control module controls the data signal corresponding to the data read from the SSD memory disk portion by the DMA control module and the memory control module under the control of the DMA control module The synchronization of the signal includes a communication speed corresponding to the PCI-Express communication protocol, and the synchronization data signal is transmitted to the host interface, and the synchronization of the data signal is adjusted to have a communication protocol with the magnetic disk portion of the SSD memory. Corresponding transmission speed to pass the above DMA control module And the memory control module transmits the synchronization signal to the SSD memory magnetic disk portion; and the high speed interface module, and processes the data transmitted/received between the synchronous control module and the DMA control module at a high speed, and includes a buffer having a double buffer structure and a buffer of a loop-and-loop structure, and adjusting data while buffering data transmitted/received between the synchronous control module and the DMA control module by using the buffer The clock processes data transmitted/received between the synchronous control module and the DMA control module at a high speed without loss. The RAID-controlled semiconductor storage device of claim 1, further comprising: a backup storage unit for storing data of the SSD memory disk portion; and a backup control unit according to the indication of the host Or, when an error occurs in the power transmitted from the host, the data of the SSD memory disk portion stored in the backup storage unit is backed up. The RAID-controlled semiconductor storage device according to claim 2, further comprising: an auxiliary power supply unit that performs charging by using the power transmitted from the host through the host interface to maintain a certain power; and a power supply The control unit supplies the power transmitted from the host to the controller unit, the SSD memory magnetic sheet unit, the backup storage unit, and the backup control unit via the host interface, and from the host interface When the power transmitted by the host is interrupted or the power transmitted from the host is incorrect, power is received from the auxiliary power supply unit, and the power is supplied to the memory magnetic disk unit via the controller unit. The RAID-controlled semiconductor storage device of claim 1, wherein The plurality of semiconductor memories are volatile memories, and the host interface is a PCI-Express host interface. The RAID-controlled semiconductor storage device according to the first aspect of the invention, wherein: the SSD memory magnetic disk portion includes: a host interface; and a DMA (Direct Memory Access) connected to the backup control module. An access controller; an ECC (Error Correction Code) controller connected to the DMA control; a memory controller connected to the ECC controller; and a memory controller connected to the memory controller and including at least one memory Memory array of body units. The RAID-controlled semiconductor storage device of claim 1, wherein the semiconductor storage device provides a storage function to a serially connected computer device. A RAID-type semiconductor storage device of the PCI-Express type, comprising: a memory magnetic disk portion, comprising a plurality of semiconductor storage devices (SSD) memory magnetic disks having a plurality of semiconductor memories a RAID controller connected to the SSD memory disk portion; a PCI-Express host interface connected between the SSD memory disk and the host; and a controller unit connected to the RAID controller and adjusted in the PCI- Synchronizing the data signal transmitted between the Express host interface and the SSD memory disk portion to control the communication speed between the PCI-Express host interface and the SSD memory disk portion; The controller unit includes: a memory control module that controls data registration/output of the SSD memory disk unit; and a DMA control module that controls the memory control module to pass the PCI-Express host face Receiving an instruction from the host to store data to the SSD memory disk portion, or reading data from the SSD memory disk portion to provide the data to the host; the buffer is buffered according to the control of the DMA control module And the synchronization control module, the communication speed of the synchronous data communication, wherein: the synchronous control module receives the slave SSD through the DMA control module and the memory control module under the control of the DMA control module When the data signal corresponding to the data read by the memory disk portion is adjusted, the communication data corresponding to the PCI-Express communication protocol is adjusted by adjusting the synchronization of the data signal to transmit the synchronous data signal to the PCI-Express host interface; When the data signal is received from the host by the PCI-Express host interface, the synchronization of the data signal is adjusted and used for a transmission speed corresponding to a communication protocol of the SSD memory magnetic disk portion, wherein the synchronization signal is transmitted to the SSD memory magnetic disk portion by the DMA control module and the memory control module; and further includes high speed processing in the above A high-speed interface module for transmitting/receiving data between the synchronous control module and the DMA control module. The PCI-Express type RAID-controlled semiconductor storage device of claim 7, further comprising: a backup storage unit for storing data of the SSD memory disk portion; and a backup control unit, The data of the SSD memory disk portion stored in the backup storage unit is backed up according to an instruction from the host or when an error occurs in power transmitted from the host. The RAID-controlled half of the PCI-Express type as described in claim 8 The conductor storage device further includes: an auxiliary power supply unit that charges by using the power transmitted from the host through the PCI-Express host interface to maintain a constant power; and a power control unit that passes power transmitted from the host The host PCI-Express interface is supplied to the controller unit, the SSD memory magnetic sheet unit, the backup storage unit, and the backup control unit, and the power transmission from the host is interrupted by the host PCI-Express interface. When an error occurs in the power transmitted from the host, the power is received from the auxiliary power supply unit, and the power is supplied to the SSD memory magnetic sheet unit via the controller unit. A PCI-Express type RAID-controlled semiconductor storage device according to claim 7, wherein the semiconductor storage device provides a storage function to a serially connected computer device. A RAID-controlled semiconductor storage device forming method, comprising the steps of: providing a memory disk portion including a plurality of semiconductor storage devices (SSD) memories having a plurality of semiconductor memories; a magnetic disk; a RAID controller connected to the SSD memory disk portion; a host interface connected between the SSD memory disk and the host; and a controller unit connected to the RAID controller and adjusting the host interface Synchronizing with the data signal transmitted between the SSD memory disk portion to control the communication speed between the host interface and the SSD memory disk portion, wherein: the step of providing the controller portion includes providing the following The component step: a memory control module that controls data registration/output of the memory disk portion of the memory; and a DMA control module that controls the memory control module to receive from the host through the PCI-Express host face Indicating to the above SSD memory The magnetic disk portion stores data, or reads data from the SSD memory magnetic disk portion to provide the above data to the host; the buffer, according to the control buffer data of the DMA control module; the synchronous control module, in the DMA control mode Under the control of the group, when the data signal corresponding to the data read from the SSD memory disk portion is received by the DMA control module and the memory control module, the data signal synchronization is adjusted to communicate with the PCI-Express. a communication speed corresponding to the protocol, wherein the synchronization data signal is transmitted to the host interface, and the synchronization of the data signal is adjusted to have a transmission speed corresponding to a communication protocol for the SSD memory disk portion to pass the DMA. The control module and the memory control module transmit the synchronization signal to the SSD memory magnetic disk portion; and the high-speed interface module, and high-speed processing data transmitted/received between the synchronous control module and the DMA control module And include a buffer having a double buffer structure and a buffer of a loop-loop structure, and, in the buffer using the above buffer While the data transmitted/received between the synchronous control module and the DMA control module is described, the data clock is adjusted to transmit between the synchronous control module and the DMA control module without loss. Received data. The method for forming a RAID-controlled semiconductor storage device according to claim 11, further comprising the steps of: providing a backup storage unit for storing data of the magnetic disk portion of the SSD memory; and a backup control unit, The data of the SSD memory disk portion stored in the backup storage unit is backed up according to an instruction from the host or when an error occurs in power transmitted from the host. The method for forming a RAID-controlled semiconductor storage device according to claim 12, further comprising the steps of: providing the following components: The auxiliary power supply unit charges the electric power transmitted from the main body via the main body surface portion to maintain a constant electric power, and the power supply control unit supplies the electric power transmitted from the main body to the controller unit through the main body surface portion. An SSD memory magnetic disk unit, the backup storage unit, and the backup control unit, and receiving power from the auxiliary power supply unit when power transmitted from the host through the host interface is interrupted or power transmitted from the host is incorrect. The electric power is supplied to the memory magnet unit via the controller unit. The method of forming a RAID-controlled semiconductor storage device according to claim 11, wherein the plurality of semiconductor memories are volatile memories. The method for forming a RAID-controlled semiconductor storage device according to claim 11, wherein the host interface is a PCI-Express host interface. The method of forming a RAID-controlled semiconductor storage device according to claim 11, wherein the semiconductor storage device provides a storage function to the serially connected computer device.