CN105988733A - Storage device, electronic device and data access method thereof - Google Patents

Abstract

The invention provides a storage device, an electronic device and a data access method thereof. The method is suitable for an electronic device with a storage device, wherein the storage device is provided with a hard disk and a storage device for storing partial data in the hard disk; when the electronic device enters a power saving mode, enabling a power supply temporary PUIS mode of the storage device, and preferentially writing data to be written by a write command into the storage device when the write command to the storage device is received; and when a read instruction for the memory device is received, the data to be read by the instruction is preferentially read from the memory device. The invention provides a storage device, an electronic device and a data access method thereof, which can avoid the damage caused by frequent turning-up of a hard disk by utilizing a memory to read and write data in a power-saving mode.

Description

Storage device, electronic device and data access method thereof

technical field

The present invention relates to a data access method and device, and in particular to a storage device, an electronic device and a data access method thereof.

Background technique

As electronic products are more and more closely integrated with the network, future products will aim to maintain connection with the network even when the system is at rest. When an external device wants to access data in the product, it is not necessary to wake up the entire system. For example, the Connected Standby (CS) system previously promoted by Microsoft Corporation means that when the system enters a dormant state and the application program is in a suspended state, the device remains connected to the network.

However, the above-mentioned functions are actually in conflict with the operation of traditional hard disks, because the hard disk must be rotated to read the hard disk, and the user will definitely hear the sound of the motor rotating. Furthermore, the hard disk is highly sensitive to vibration after spinning up. If the hard disk is shaken during rotation, it may cause damage to the hard disk. In view of this, it is necessary to provide an appropriate data access method to prevent the hard disk from spinning up when the system enters the power saving mode.

Contents of the invention

The invention provides a storage device, an electronic device and a data access method thereof. By using the storage device to read and write data in the power-saving mode, the hard disk can be prevented from being damaged due to frequent rotation.

The data access method of the present invention is suitable for an electronic device with a storage device, and the storage device has a hard disk and a memory device for storing part of the data in the hard disk. The method is to enable the power supply temporary transfer (Power Up In Standby, PUIS) mode of the storage device when the electronic device enters the power saving mode, so that when a write command for the storage device is received, priority will be given to the storage device required by the write command. The written data is written into the memory device; and when a read command for the storage device is received, the data to be read by the read command is preferentially read from the memory device.

The data access method of the present invention is applicable to an electronic device having a memory device and a storage device, wherein the memory device stores part of the data of the storage device. In this method, when the electronic device enters the power saving mode, the advanced power management (Advanced power management, referred to as: APM) mode is enabled to intercept the write command and the read command to the storage device, and when the write command to the storage device is received When a command is input, the data to be written by the write command is preferentially written into the memory device; when a read command to the storage device is received, the data to be read by the read command is preferentially read from the memory device.

The storage device of the present invention is suitable for being configured in an electronic device, which includes a hard disk, a memory device and a controller. Wherein, the memory device is used for storing part of data of the hard disk. The controller is coupled to the hard disk and the memory device, and is used to receive a trigger signal for the electronic device to enter the power saving mode to enable the power supply temporary mode, and when receiving a write command from the electronic device, it will prioritize the data to be written by the write command. Data is written into the memory device; when receiving a read command from the electronic device, the data to be read by the read command is preferentially read from the memory device.

The electronic device of the present invention includes a storage device, a memory device and a processor. Wherein, the memory device is used for storing part of data of the hard disk. The processor is coupled to the storage device and the memory device, and is used to receive a trigger signal for the electronic device to enter the power saving mode, to enable the advanced power management mode, intercept write commands and read commands to the storage device, and receive the electronic device's When writing a command, the data to be written by the write command is preferentially written into the memory device; when receiving the read command from the electronic device, the data to be read by the read command is preferentially read from the memory device.

Based on the above, the storage device, the electronic device and the data access method thereof of the present invention configure a memory device in the storage device or configure a memory device in the electronic device to store part of the data of the hard disk. After the system enters the power saving mode, whenever a read or write command to the hard disk is received, the system will preferentially access the memory device. In this way, the hard disk can be prevented from being damaged due to frequent spin-ups in the power-saving mode.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

Description of drawings

FIG. 1 is a schematic structural diagram of a storage device shown in an embodiment of the present invention;

Fig. 2 is a flowchart of a data access method shown in an embodiment of the present invention;

FIG. 3 is an example of a data access method shown in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an electronic device shown in an embodiment of the present invention;

Fig. 5 is a flowchart of a data access method shown in an embodiment of the present invention;

FIG. 6 is an example of a data access method shown in an embodiment of the present invention.

Explanation of reference signs:

10, 42: storage device;

12: hard disk;

14, 44: memory device;

16: controller;

40: electronic device;

46: processor;

S202～S206, S502～S506: steps.

detailed description

When the operating system enters the power-saving mode, the present invention uses the existing solid state hybrid drive (SSHD) itself and non-flash memory (NAND Flash) to store part of the data on the hard disk and provide priority for electronic devices to access Data, combined with the Power Up In Standby (PUIS) mode of the hard disk, can provide data access function without rotating the hard disk. In addition, for an electronic device using a traditional hard disk (Hard Disk Drive, HDD for short), the present invention also configures an additional memory device in the electronic device to store part of the data of the hard disk, and provides priority for electronic devices when the operating system enters the power saving mode. The device accesses data, and can also provide data access functions without rotating the hard disk.

FIG. 1 is a schematic structural diagram of a storage device according to an embodiment of the present invention. Please refer to FIG. 1 , the storage device 10 of the present embodiment is, for example, a solid-state hybrid hard disk (SSHD) configured in electronic devices (not shown) such as computers, workstations, servers, or externally connected to electronic devices. Two or more storage media with high access speed are combined, such as the hard disk 12 and the memory device 14 shown in FIG. 1 . The storage device 10 further includes a controller 16 , which is coupled to the hard disk 12 , the memory device 14 and the electronic device, and can be used to process read and write commands from the electronic device to the storage device 10 .

The Hard Disk Drive (HDD for short) 12 is, for example, a disk-based non-volatile storage medium, and the magnetic head uses electromagnetic current to change polarity to write data to the disk. The memory device 14 is, for example, a non-flash memory (NAND Flash memory) or other non-volatile (Non-volatile) memory or a device using the above elements, which can store part of the data in the hard disk 12 through the control of the controller 16 .

The controller 16 is, for example, an embedded controller (Embedded Controller, referred to as: EC) or a control chip (Control chip), which is coupled to the hard disk 12 and the memory device 14, and is used to receive signals and instructions transmitted by the electronic device, and store them accordingly. The data in the hard disk 12 and the memory device 14 are fetched.

In detail, FIG. 2 is a flowchart of a data access method according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 2 at the same time. The method of this embodiment is applicable to the above-mentioned storage device 10 . The detailed flow of the method of this embodiment will be described below in combination with various elements of the storage device 10 in FIG. 1 .

Firstly, the controller 16 receives a trigger signal generated by the operating system of the electronic device entering the power saving mode, thereby enabling the power supply suspending mode of the storage device 10 (step S202 ). Among them, in the power supply temporary rotation mode, the storage device 10 will stop the work at hand, make the hard disk 12 stop spinning, and switch the access rule of the hard disk 12 to prevent spinning algorithm (Spinning Preventing Algorithm), so as to ensure that the hard disk 12 will not Turn immediately when there is a power failure. In this way, it can be ensured that when the electronic device wakes up through the network, the hard disk 12 will not be caused to rotate, and the hard disk 12 will not be damaged accordingly. The aforementioned power saving mode is, for example, a sleep mode (Suspend to Disk, S4 for short), but the embodiment of the present invention is not limited thereto.

It should be noted that, when the controller 16 activates the power supply temporary mode of the storage device 10, for example, the data in the storage device 10 whose access frequency is higher than a threshold in the power saving mode will be copied from the hard disk 12 to the storage device 14 to provide electronic device access. At the same time, the controller also copies the data whose access frequency is lower than the threshold in the power saving mode from the memory device 14 to the hard disk 12 , and then deletes the data from the memory device 14 to free up space in the memory device 14 .

In the temporary power supply mode, when the controller 16 receives a write command from the electronic device to the storage device 10 , it will preferentially write the data to be written by the write command into the memory device 14 (step S204 ). To be more specific, when the controller 16 receives a write command from the electronic device, it will operate in conjunction with the power supply temporary mode. First, the hard disk 12 is powered on, but the disk is not turned on, and then the write command will be written. The data is placed into the memory device 14. Wherein, the firmware of the controller 16 is designed to prevent the hard disk 12 from rotating unless the space of the memory device 14 is insufficient. That is to say, when the controller 16 receives the write command, it will first judge whether the remaining space of the memory device 14 is enough to store the data to be written by the write command. If the remaining space is not enough, the controller 16 will rotate the hard disk 12 to Write the data to be written by the write command.

On the other hand, in the temporary power supply mode, when the controller 16 receives a read command from the electronic device to the storage device 10 , it will preferentially read the data to be read by the read command from the memory device 14 (step S206 ). In detail, when the controller 16 receives the read command from the electronic device, it will first determine whether the memory device 14 stores the data to be read by the read command. If the memory device 14 does not have the data to be read by the read command, Only then will the hard disk 12 be rotated to read the data to be read by the read command.

It should be noted that for the part of reading, because the storage device 10 cannot predict that the data that the electronic device needs to access will be in the hard disk 12 or the memory device 14, but most of the data that the electronic device needs to access in the power saving mode is concentrated For some specific data, if these specific data can be copied to the memory device 14 in advance, the number of spin-ups of the hard disk 12 in the power-saving mode can be effectively reduced. Accordingly, in one embodiment, the controller 16, for example, executes a learning algorithm when the power supply temporary mode of the storage device 10 is enabled, and counts the access of each data in the hard disk 12 by the electronic device in the power saving mode. Frequency, so that when the electronic device enters the power saving mode, the data whose access frequency is higher than the threshold value is first copied from the hard disk 12 to the memory device 14, thereby providing the electronic device with access in the power saving mode.

For example, FIG. 3 is an example of a data access method shown in an embodiment of the present invention. Please refer to Fig. 3, when the present embodiment enters the power-saving mode from the normal operation mode in the system power state, the power supply temporary rotation mode is enabled, thereby stopping the rotation of the hard disk, and executing the access algorithm for preventing rotation, and avoiding the rotation of the hard disk as much as possible; and in the system When the power state leaves the power saving mode, it will leave the power supply temporary mode, thereby resuming the rotation of the hard disk and returning to the normal access algorithm. Wherein, when the electronic device leaves the power saving mode, in addition to turning off the power supply temporary mode of the storage device, the hard disk is rotated to transfer the data written in the memory device during the power supply temporary mode to the hard disk.

Through the above data access method, the storage device of this embodiment can use the memory to temporarily store data and give priority to electronic devices to access data in the power supply temporary mode, thereby reducing the frequency of hard disk spin-up and avoiding hard disk damage.

It should be noted that the above-mentioned embodiments are mainly designed for the data access method of the solid-state hybrid hard disk which has both memory and hard disk. It can control the memory access by changing the firmware of the disk drive. However, for a traditional hard disk, since it does not have a memory, the firmware of the disk drive cannot be used to control the access of the memory. For this, an embodiment of the present invention loads an additional memory in the electronic device, and the processor of the electronic device directly manages the data access between the memory and the hard disk. Hereinafter, another embodiment will be given in detail.

FIG. 4 is a schematic structural diagram of an electronic device according to an embodiment of the present invention. Referring to FIG. 4 , the electronic device 40 of this embodiment is, for example, a computer, a workstation or a server, and includes a storage device 42 , a memory device 44 and a processor 46 , and their functions are described below.

The storage device 42 is, for example, a hard disk. The memory device 44 is, for example, an NAND flash memory, or a fast access solid-state hard disk (Cache SSD) or an embedded multimedia card (Embedded MultiMediaCard, referred to as: eMMC) including an NAND flash memory, or other types of non-volatile The type of memory or device is not limited in this embodiment. The memory device 44 can store part of the data in the storage device 42 under the control of the processor 46 .

The processor 46 is, for example, a central processing unit (Central Processing Unit, referred to as: CPU), or other programmable general purpose or special purpose microprocessor (Microprocessor), digital signal processor (Digital Signal Processor, referred to as: DSP) , a programmable controller, an application specific integrated circuit (Application Specific Integrated Circuits, referred to as ASIC), a programmable logic device (Programmable Logic Device, referred to as: PLD) or other similar devices or a combination of these devices, which are coupled to the storage device 42 and The memory device 44 is used for processing signals and instructions sent by the electronic device 40 , and accessing data of the storage device 42 and the memory device 44 accordingly.

In detail, FIG. 5 is a flowchart of a data access method according to an embodiment of the present invention. Please refer to FIG. 4 and FIG. 5 at the same time. The method of this embodiment is applicable to the above-mentioned electronic device 40 . The detailed process of the method of this embodiment will be described below in combination with various elements of the electronic device 40 in FIG. 4 .

Firstly, the processor 46 receives the trigger signal generated by the operating system of the electronic device 40 entering the power saving mode, and accordingly activates the advanced power management (Advanced power management, APM) mode to intercept the electronic device 40 for the storage device 42 Write command and read command (step S502). Wherein, the present embodiment intercepts the access command of the electronic device 40 to the storage device 42 by implementing a layer of filter driver (Filter driver) on the Advanced Configuration and Power Interface (Advanced Configuration and Power Interface, ACPI for short), and then manages Data access of the storage device 42 and the memory device 44 .

Wherein, when the processor 46 receives the write instruction from the electronic device 40 to the storage device 42, it will preferentially write the data to be written by the write instruction into the storage device 44 (step S504). Specifically, when the processor 46 receives a write command from the electronic device 40, for example, it first judges whether the remaining space of the memory device 44 is sufficient to store the data to be written by the write command. The storage device 42 is rotated to write the data to be written by the write command.

On the other hand, when the processor 46 receives the read command from the electronic device 40 to the storage device 42, it also preferentially reads the data to be read by the read command from the memory device 44 (step S506). To be more specific, when the processor 46 receives the read command from the electronic device 40, for example, it will first determine whether the memory device 44 has the data to be read by the read command, if the memory device 44 does not have the data to be read by the read command, data, the storage device 42 will be rotated to read the data to be read by the read command.

Similar to the aforementioned embodiments, for the part of reading, in one embodiment, the processor 46, for example, executes a learning algorithm when the advanced power management mode is enabled, and counts the electronic device 40 in the power saving mode for the storage device 42 The access frequency of each piece of data, so that when the electronic device 40 enters the power saving mode, the data whose access frequency is higher than the threshold value is first copied from the storage device 42 to the memory device 44, so that the electronic device 40 can save power. mode for access.

For example, FIG. 6 is an example of a data access method shown in an embodiment of the present invention. Please refer to FIG. 6. In this embodiment, when the system power state enters the power saving mode from the normal operation mode, the advanced power management mode is enabled to intercept the write command and the read command for the hard disk, and the data of the hard disk is controlled by the filter driver. For access, try to avoid rotating the hard disk; and when the system power state leaves the power saving mode, it will leave the advanced power management mode, thereby restoring the hard disk rotation, and returning to the general access algorithm. Wherein, when the electronic device leaves the power saving mode, in addition to turning off the advanced power management mode, the hard disk is rotated to move the data written in the memory device during the advanced power management mode to the hard disk.

Through the above data access method, the electronic device of this embodiment can use the filter driver to intercept the access command of the electronic device to the hard disk in the advanced power management mode, and preferentially access data from the memory. In this way, the spinning frequency of the hard disk can be effectively reduced to avoid damage to the hard disk.

To sum up, the storage device, electronic device and data access method of the present invention use a storage device in the storage device or a storage device in the electronic device to store part of the data of the hard disk, and cooperate with the power supply of the storage device to temporarily In the switching mode or the advanced power management mode of the electronic device, when receiving an access command from the system, the memory device is preferentially accessed. In this way, the hard disk can be prevented from being damaged due to frequent spin-ups in the power-saving mode.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. a data access method, it is adaptable to there is the electronic installation of storage device, it is characterised in that Described storage device has hard disk and in order to store the storage arrangement of described hard disk part data, described side Method comprises the following steps:

When described electronic installation enters battery saving mode, enable the temporary rotary-die type of power supply of described storage device；

When receiving the write instruction for described storage device, preferential write said write instruction is wanted The data of write are in described storage arrangement；And

When receiving the reading for described storage device and instructing, preferentially read from described storage arrangement Described reading instructs data to be read.

Data access method the most according to claim 1, it is characterised in that enter at electronic installation During described battery saving mode, the step of the temporary rotary-die type of described power supply enabling described storage device also includes:

By frequency of access under described battery saving mode higher than threshold value data by described copying to described in deposit Reservoir device；And

Frequency of access under described battery saving mode is multiple by described storage arrangement less than the data of described threshold value System is to described hard disk, and deletes the described data in described storage arrangement.

Data access method the most according to claim 2, it is characterised in that by described battery saving mode Lower frequency of access is higher than the data of described threshold value by the step of described copying to described storage arrangement Also include:

Add up described electronic installation access frequency for pen data each in described hard disk under described battery saving mode Rate, is higher than the data of described threshold value by described copying by frequency of access under described battery saving mode according to this To described storage arrangement.

Data access method the most according to claim 1, it is characterised in that also include:

When described electronic installation leaves described battery saving mode, the described power supply closing described storage device is temporary Rotary-die type, and rotate described hard disk to write described storage arrangement during temporary for described power supply rotary-die type Data-moving is to described hard disk.

5. a data access method, it is adaptable to there is storage arrangement and the electronic installation of storage device, It is characterized in that, described storage arrangement stores the part data of described storage device, and described method includes The following step:

Described electronic installation enter battery saving mode time, enable APM pattern, with intercept for The write instruction of described storage device and reading instruction；

When receiving the said write for described storage device and instructing, preferential write said write instruction Data to be write are in described storage arrangement；And

When receiving the described reading instruction for described storage device, preferentially from described storage arrangement Read described reading and instruct data to be read.

Data access method the most according to claim 5, it is characterised in that enter at electronic installation During described battery saving mode, the step enabling described APM pattern also includes:

Frequency of access under described battery saving mode is copied to institute higher than the data of threshold value by described storage device State storage arrangement；And

Frequency of access under described battery saving mode is multiple by described storage arrangement less than the data of described threshold value System is to described storage device, and deletes the described data in described storage arrangement.

Data access method the most according to claim 6, it is characterised in that by described battery saving mode Lower frequency of access is copied to described storage arrangement higher than the data of described threshold value by described storage device Step also includes:

Add up described electronic installation under described battery saving mode, each pen data in described storage device to be deposited Take frequency, according to this frequency of access under described battery saving mode is higher than the data of described threshold value by described storage Device copies to described storage arrangement.

Data access method the most according to claim 5, it is characterised in that also include:

When described electronic installation leaves described battery saving mode, close the described senior electricity of described storage device Source control pattern, and rotate described storage device with by described for write during described APM pattern The data-moving of storage arrangement is to described storage device.

9. a storage device, is suitable to be configured at electronic installation, it is characterised in that including:

Hard disk；

Storage arrangement, stores the part data of described hard disk；And

Controller, couples described hard disk and described storage arrangement, receives described electronic installation and enters power saving The triggering signal of pattern, to enable the temporary rotary-die type of power supply, wherein

When receiving the write instruction of described electronic installation, preferential write said write instruction to write Data in described storage arrangement；And

When the reading receiving described electronic installation instructs, preferentially read described from described storage arrangement Read the data that instruction is to be read.

10. an electronic installation, it is characterised in that including:

Storage device；

Storage arrangement, stores the part data of described hard disk；And

Processor, couples described storage device and described storage arrangement, receives described electronic installation and enters The triggering signal of battery saving mode, to enable APM pattern, to intercept for described storage device Write instruction and read instruction, wherein

When the said write receiving described electronic installation instructs, preferential write said write instruction is wanted The data of write are in described storage arrangement；And

When the described reading instruction receiving described electronic installation, preferentially read from described storage arrangement Described reading instructs data to be read.