TWI548983B - Storage apapratus, electronic apparatus and data accessing method thereof - Google Patents

Description

Storage device, electronic device and data access method thereof

The present invention relates to a data access method and apparatus, and more particularly to an electronic device and a data access method when entering a power saving mode.

As electronic products and networks become more closely integrated, future products will be linked to the Internet as the system enters the break. When the external device wants to access the data in the product, it is not necessary to wake up the entire system. For example, Microsoft's previously connected Connected Standby (CS) system is that when the system goes to sleep and the application is in suspend state, the device remains connected to the network.

However, the above functions are incompatible with the operation of the conventional hard disk, because it is necessary to turn the hard disk to read the hard disk, and the user must hear the sound of the motor turning. Moreover, the hard disk is highly sensitive to vibration after being turned up, and if it is shaken to the hard disk while rotating, it may cause damage to the hard disk. In view of this, it is necessary to provide appropriate data access methods to prevent the hard disk from turning when the system enters the power saving mode.

The present invention provides a storage device, an electronic device, and a data access method thereof. By using a memory to provide reading and writing of data in a power saving mode, it is possible to prevent the hard disk from being frequently turned up and causing damage.

The data access method of the present invention is applicable to an electronic device having a storage device having a hard disk and a memory device for storing a portion of the data in the hard disk. The method is to enable the power up In Standby (PUIS) mode of the storage device when the electronic device enters the power saving mode, so as to preferentially write the write command when receiving the write command to the storage device The data is written to the memory device; and upon receiving the read command for the storage device, 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. The method is to enable an advanced power management (APM) mode to intercept a write command and a read command to the storage device when the electronic device enters the power saving mode, and receive a write command to the storage device. When the data to be written by the write command is preferentially written to the memory device, when the 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 storage device of the present invention is adapted to be disposed in an electronic device, and includes a hard disk, a memory device, and a controller. The memory device is used to store part of the data of the hard disk. The controller is coupled to the hard disk and the memory device for receiving the electronic device to enter the power saving The trigger signal of the mode is used to enable the power supply suspend mode, and when receiving the write command of the electronic device, the data to be written by the write command is preferentially written into the memory device; when the read command of the electronic device is received 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. The memory device is used to store part of the data of the hard disk. The processor is coupled to the storage device and the memory device for receiving the trigger signal of the electronic device to enter the power saving mode, to enable the advanced power management mode, intercepting the write command and the read command for the storage device, and receiving the electronic device When writing a command, the data to be written by the write command is preferentially written to 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 are configured to configure a memory device in the storage device or to 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, the system preferentially accesses the memory device whenever a read or write command to the hard disk is received. Thereby, it is possible to prevent the hard disk from being frequently turned up in the power saving mode to cause damage.

The above described features and advantages of the invention will be apparent from the following description.

10, 42‧‧‧ storage devices

12‧‧‧ Hard disk

14, 44‧‧‧ memory devices

16‧‧‧ Controller

40‧‧‧Electronic devices

46‧‧‧ processor

S202~S206, S502~S506‧‧‧ steps of the data access method of an embodiment of the present invention

1 is a block diagram of a storage device in accordance with an embodiment of the invention.

2 is a flow chart of a method for accessing data according to an embodiment of the present invention.

FIG. 3 is a diagram showing an example of a data access method according to an embodiment of the invention.

4 is a block diagram of an electronic device in accordance with an embodiment of the invention.

FIG. 5 is a flowchart of a data access method according to an embodiment of the present disclosure.

FIG. 6 is a diagram showing an example of a data access method according to an embodiment of the invention.

In the case of the operating system entering the power-saving mode, the solid state hybrid drive (SSHD) itself uses the reverse NAND Flash memory to store part of the hard disk and prioritizes the electronic device. By accessing the data and matching the Power Up In Standby (PUIS) mode of the hard disk, you can provide data access without turning the hard disk. In addition, for an electronic device using a conventional Hard Disk Drive (HDD), the present invention also stores a portion of the hard disk by additionally configuring a memory device in the electronic device, and preferentially provides the operating system when the operating system enters the power saving mode. The electronic device accesses the data, and the data access function can be provided without rotating the hard disk.

1 is a block diagram of a storage device in accordance with an embodiment of the invention. Referring to FIG. 1 , the storage device 10 of the present embodiment is, for example, a solid state hybrid hard disk (SSHD) disposed in an electronic device (not shown) such as a computer, a workstation, a server, or the like, or externally connected to the electronic device. Two or more storage media having different access speeds are combined, such as the hard disk 12 and the memory device 14 shown in FIG. The storage device 10 further includes a controller 16 coupled to the hard disk 12, the memory device 14 and the electronic device, and can be used to process the reading of the electronic device for the storage device 10. Take and write instructions.

A Hard Disk Drive (HDD) 12 is, for example, a disk-based non-volatile storage medium in which a magnetic head changes the polarity by means of electromagnetic current to write data onto a magnetic disk. The memory device 14 is, for example, a NAND Flash memory or other non-volatile memory or a device using the above components, which can be stored in the hard disk 12 via the control of the controller 16. Part of the information.

The controller 16 is, for example, an embedded controller (EC) or a control chip, which is coupled to the hard disk 12 and the memory device 14 for receiving signals and commands transmitted by the electronic device. The data in the hard disk 12 and the memory device 14 are accessed.

In more detail, FIG. 2 is a flowchart of a data access method according to an embodiment of the present disclosure. Referring to FIG. 1 and FIG. 2 simultaneously, the method of this embodiment is applicable to the above-described storage device 10. The detailed flow of the method of this embodiment will be described below in conjunction with the components of the storage device 10 of FIG.

First, the controller 16 receives the trigger signal generated by the operating system of the electronic device entering the power saving mode, thereby enabling the power supply suspension mode of the storage device 10 (step S202). Wherein, in the power supply suspend mode, the storage device 10 stops the work on the hand, stops the hard disk 12 from rotating, and switches the access rule of the hard disk 12 to a Spinning Preventing Algorithm to ensure hard The disc 12 does not rotate immediately upon overpowering. Thereby, it can be ensured that the electronic device does not cause the hard disk 12 to rotate when waking up via the network, thereby preventing the hard disk 12 from being damaged. The above power saving mode For example, it is a sleep mode (Suspend to Disk, S4), but the embodiment of the present invention is not limited thereto.

It should be noted that, when the power supply temporary rotation mode of the storage device 10 is enabled, for example, the data in the storage device 10 whose access frequency is higher than a threshold value in the power saving mode is copied from the hard disk 12 to the memory. Device 14 is provided to provide access to the electronic device. At the same time, the controller also copies the data whose access frequency is lower than the threshold value in the power saving mode from the memory device 14 to the hard disk 12, and deletes the data from the memory device 14 to empty the memory device 14. Space.

In the power supply suspend mode, when receiving the write command from the electronic device to the storage device 10, the controller 16 preferentially writes the data to be written by the write command to the memory device 14 (step S204). In detail, when the controller 16 receives the write command from the electronic device, it will cooperate with the power supply suspend mode to power on the hard disk 12 first, but does not turn the disk, and then writes the write command. The incoming data is placed in the memory device 14. Wherein, the firmware of the controller 16 is designed to avoid the rotation of the hard disk 12 as much as possible unless the space of the memory device 14 is insufficient. That is to say, when receiving the write command, the controller 16 first determines whether the remaining space of the memory device 14 is sufficient to store the data to be written by the write command, and if the remaining space is insufficient, the controller 16 will rotate the hard disk. 12 writes the data to be written by the write command.

On the other hand, in the power supply suspend mode, when receiving the read command from the electronic device to the storage device 10, the controller 16 preferentially reads 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 first determines whether the memory device 14 stores the data to be read by the read command, and if the memory device 14 does not read the command, it needs to read. The data taken will turn the hard disk 12 to read the data to be read by the read command.

It should be noted that, for the read part, the storage device 10 cannot predict that the data that the electronic device needs to access may be in the hard disk 12 or the memory device 14, but the data that the electronic device needs to access in the power saving mode. Most of them are concentrated on certain specific materials, so if these specific data can be copied to the memory device 14, the number of times the hard disk 12 is turned up in the power saving mode can be effectively reduced. Accordingly, in an embodiment, the controller 16 executes a learning algorithm, for example, when the power supply suspend mode of the storage device 10 is enabled, and the statistical electronic device stores the data in the hard disk 12 in the power saving mode. The frequency is taken 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 access to the electronic device in the power saving mode.

For example, FIG. 3 is an example of a data access method according to an embodiment of the invention. Referring to FIG. 3, in the embodiment, when the system power state is changed from the normal operation mode to the power saving mode, the power supply temporary rotation mode is enabled, thereby stopping the hard disk rotation, and performing an operation algorithm for preventing rotation, and avoiding rotating the hard disk as much as possible. When the system power state leaves the power saving mode, it will leave the power supply temporary mode, thereby recovering the hard disk rotation and replying to the general access algorithm. Wherein, when the electronic device leaves the power saving mode, in addition to turning off the power supply temporary rotation mode of the storage device, the hard disk is rotated to move the data written to the memory device during the power supply suspend mode to the hard disk.

With the above data access method, the storage device of the embodiment can use the memory temporary storage data and preferentially provide the electronic device to access the data in the power supply temporary transfer mode, thereby reducing the frequency of hard disk rotation and avoiding hard The disc is damaged.

It should be noted that the above embodiment is mainly directed to a data access method designed by a solid-state hybrid hard disk having both a memory and a hard disk, which can control the access of the memory by changing the firmware of the disk drive. . However, for a conventional hard disk, since the memory itself is not provided, the firmware of the disk drive cannot be used to control the access of the memory. In this regard, an embodiment of the present invention additionally loads a memory in the electronic device, and directly manages data access between the memory and the hard disk by the processor of the electronic device. The following is a detailed description of an embodiment.

4 is a block diagram of an electronic device in accordance with an embodiment of the invention. Referring to FIG. 4, the electronic device 40 of the present 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, the functions of which are described below.

The storage device 42 is, for example, a hard disk. The memory device 44 is, for example, a flash memory or a cached SSD or an Embedded MultiMediaCard (eMMC) containing anti-flash memory, or other types of non-volatile The memory or device, the embodiment does not limit its kind. The memory device 44 can store a portion of the data in the storage device 42 via the control of the processor 46.

The processor 46 is, for example, a central processing unit (CPU), or another programmable general purpose or special purpose microprocessor (Microprocessor), a digital signal processor (DSP), and a programmable program. Controller, Application Specific Integrated Circuits (ASIC), Programmable Logic Device (PLD) or other similar devices or a combination of these devices The storage device 42 and the memory device 44 are connected to process the signals and commands transmitted by the electronic device 40 to access the data of the storage device 42 and the memory device 44.

In detail, FIG. 5 is a flowchart of a data access method according to an embodiment of the present disclosure. Referring to FIG. 4 and FIG. 5 simultaneously, the method of this embodiment is applicable to the electronic device 40 described above. The detailed flow of the method of this embodiment will be described below in conjunction with the components of the electronic device 40 of FIG.

First, the processor 46 receives the trigger signal generated by the operating system of the electronic device 40 entering the power saving mode, thereby enabling an advanced power management (APM) mode to intercept the writing of the electronic device 40 to the storage device 42. The command and the read command (step S502). In this embodiment, by implementing a filter driver on the Advanced Configuration and Power Interface (ACPI), the access command of the electronic device 40 to the storage device 42 is intercepted and managed. Data access by storage device 42 and memory device 44.

When the processor 46 receives the write command from the electronic device 40 to the storage device 42, the processor 46 preferentially writes the data to be written in the write command to the memory device 44 (step S204). In detail, when the processor 46 receives the write command from the electronic device 40, for example, it is first determined whether the remaining space of the memory device 44 is sufficient to store the data to be written by the write command. If the remaining space is insufficient, the processor 46 The storage device 42 is rotated to write the data to be written by the write command.

On the other hand, when receiving the read command from the electronic device 40 to the storage device 42, the processor 46 also preferentially reads the read command from the memory device 44. The material to be read (step S206). In detail, when the processor 46 receives the read command from the electronic device 40, for example, it is first determined whether the memory device 44 has the data to be read by the read command, and if the memory device 44 does not have the read command. The read data will rotate the storage device 42 to read the data to be read by the read command.

Similar to the previous embodiment, for the portion of the read, in one embodiment, the processor 46, for example, performs a learning algorithm when the advanced power management mode is enabled, and the statistical electronic device 40 is in the power saving mode for the storage device 42. The access frequency of each piece of data is such 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 to provide the electronic device 40 in the province. Access in electrical mode.

For example, FIG. 6 is an example of a data access method according to an embodiment of the invention. Referring to FIG. 6, in this embodiment, when the system power state is changed from the normal operation mode to the power saving mode, the advanced power management mode is enabled to intercept the write command and the read command for the hard disk, and the hard drive is controlled by the filter driver. The data access of the disc is to avoid rotating the hard disk. When the system power state leaves the power saving mode, it will leave the advanced power management mode, thereby recovering the hard disk rotation and replying to the general access algorithm. When the electronic device leaves the power saving mode, in addition to turning off the advanced power management mode, the hard disk is also rotated to move the data written to the memory device during the advanced power management mode to the hard disk.

With the above data access method, the electronic device of the 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 the data from the memory. This can effectively reduce the hard disk Turn the frequency to avoid damage to the hard disk.

In summary, the storage device, the electronic device, and the data access method thereof of the present invention use a memory device in the storage device or a memory device in the electronic device to store part of the data of the hard disk, and the storage device is matched with the storage device. The power supply temporary transfer mode or the advanced power management mode of the electronic device preferentially accesses the memory device when receiving the access command of the system. Thereby, it is possible to prevent the hard disk from being frequently turned up in the power saving mode to cause damage.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

S202~S206‧‧‧ steps of the data access method of an embodiment of the present invention

Claims (24)

A data access method for an electronic device having a storage device having a hard disk and a memory device for storing data of the hard disk portion, the method comprising the steps of: entering the electronic device In a power saving mode, a Power Up In Standby (PUIS) mode of the storage device is enabled; when a write command to the storage device is received, the write command to be written is preferentially written. Data is stored in the memory device; and upon receiving a read command for the storage device, the data to be read by the read command is preferentially read from the memory device. The data access method of claim 1, wherein the step of enabling the power supply suspend mode of the storage device when the electronic device enters the power saving mode further comprises: accessing the frequency in the power saving mode Data that is higher than a threshold is copied from the hard disk to the memory device; and data whose access frequency is lower than the threshold in the power saving mode is copied from the memory device to the hard disk, and the memory is deleted This information in the body device. The data access method of claim 2, wherein the step of copying the data whose access frequency is higher than the threshold in the power saving mode from the hard disk to the memory device further comprises: counting the electronic The access frequency of the device in the power saving mode for the data in the hard disk, according to the data in the power saving mode, the access frequency is higher than the threshold value. The hard disk is copied to the memory device. The data access method of claim 1, wherein when the write command to the storage device is received, the step of writing the data to be written by the write command to the memory device is more preferential. The method includes: determining whether the remaining space of the memory device is sufficient to store data to be written by the write command; and if the remaining space is insufficient, rotating the hard disk to write data to be written by the write command. The data access method of claim 1, wherein the step of preferentially reading the data to be read from the memory device when receiving the read command for the storage device is further The method includes: determining whether the memory device stores the data to be read by the read command; and if the memory device does not have the data to be read by the read command, rotating the hard disk to read the read command to read Information taken. The data access method of claim 1, further comprising: turning off the power supply temporary mode of the storage device when the electronic device leaves the power saving mode, and rotating the hard disk to temporarily supply the power supply The data written to the memory device during the transition mode is moved to the hard disk. A data access method 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, the method comprising the following steps: When the electronic device enters a power saving mode, an advanced power management (APM) mode is enabled to intercept a write command and a read command for the storage device; upon receiving the storage device Writing a command preferentially writes the data to be written by the write command to the memory device; and when receiving the read command for the storage device, preferentially reading the read from the memory device The data to be read by the instruction. The data access method of claim 7, wherein when the electronic device enters the power saving mode, the step of enabling the advanced power management mode further comprises: accessing the frequency in the power saving mode is higher than a threshold Data of the value is copied from the storage device to the memory device; and data having an access frequency lower than the threshold value in the power saving mode is copied from the memory device to the storage device, and the memory device is deleted The information. The data access method of claim 8, wherein the step of copying the data whose access frequency is higher than the threshold in the power saving mode from the storage device to the memory device further comprises: counting the electronic In the power saving mode, the device accesses the data of each piece of data in the storage device, and the data whose access frequency is higher than the threshold value in the power saving mode is copied from the storage device to the memory device. The data access method of claim 7, wherein the step of preferentially writing the data to be written by the write command to the memory device is further received when the write command to the storage device is received. include: Determining whether the remaining space of the memory device is sufficient to store the data to be written by the write command; and if the remaining space is insufficient, rotating the storage device to write the data to be written by the write command. The data access method of claim 7, wherein the step of preferentially reading the data to be read from the memory device when receiving the read command for the storage device is further The method includes: determining whether the memory device stores the data to be read by the read command; and if the memory device does not have the data to be read by the read command, rotating the storage device to read the read command to read Information taken. The data access method of claim 7, further comprising: turning off the advanced power management mode of the storage device when the electronic device leaves the power saving mode, and rotating the storage device to turn the advanced power supply The data written to the memory device during the management mode is moved to the storage device. A storage device, configured to be disposed on an electronic device, comprising: a hard disk; a memory device for storing part of the data of the hard disk; and a controller coupled to the hard disk and the memory device to receive the electronic device The device enters a trigger signal of a power saving mode to enable a power supply suspend mode, wherein when a write command of the electronic device is received, the data to be written by the write command is preferentially written to the memory device ;as well as Upon 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 storage device of claim 13, wherein the controller further comprises: when receiving the trigger signal, copying the data whose access frequency is higher than a threshold in the power saving mode from the hard disk to the The memory device, and the data having the access frequency lower than the threshold in the power saving mode, are copied from the memory device to the hard disk, and the data in the memory device is deleted. The storage device of claim 14, wherein the controller further comprises: counting the access frequency of the electronic device in the power saving mode for each piece of data in the hard disk, according to the power saving mode; The data whose access frequency is higher than the threshold is copied from the hard disk to the memory device. The storage device of claim 13, wherein the controller further comprises, when receiving the write command of the electronic device, determining whether a remaining space of the memory device is sufficient to store the write command to be written. The data, if the remaining space is insufficient, rotate the hard disk to write the data to be written by the write command. The storage device of claim 13, wherein the controller further comprises: when receiving the read command of the electronic device, determining whether the memory device stores the data to be read by the read command, And if the memory device does not have the data to be read by the read command, the hard disk is rotated to read the data to be read by the read command. The storage device of claim 13, wherein the controller further comprises: upon receiving a reply signal that the electronic device leaves the power saving mode, The power supply suspend mode is turned on, and the hard disk is rotated to move data written to the memory device during the power supply suspend mode to the hard disk. An electronic device includes: a storage device; a memory device for storing a portion of the data of the hard disk; and a processor coupled to the storage device and the memory device to receive the electronic device into a power saving mode Triggering a signal to enable an advanced power management mode to intercept a write command and a read command for the storage device, wherein when the write command of the electronic device is received, the write command is preferentially written The written data is in the memory device; and when the read command of the electronic device is received, the data to be read by the read command is preferentially read from the memory device. The electronic device of claim 19, wherein the processor further comprises: when the electronic device enters the power saving mode, the data whose access frequency is higher than a threshold in the power saving mode is copied by the storage device And to the memory device; and the data whose access frequency is lower than the threshold in the power saving mode is copied from the memory device to the storage device, and the data in the memory device is deleted. The electronic device of claim 20, wherein the processor further comprises: when the electronic device enters the power saving mode, counting the access of the electronic device to the data in the storage device in the power saving mode; The frequency, according to which the data whose access frequency is higher than the threshold in the power saving mode is copied from the storage device to the memory device. The electronic device of claim 19, wherein the processor further comprises, when receiving the write command for the storage device, determining whether a remaining space of the memory device is sufficient to store the write command to be written. The incoming data, if the remaining space is insufficient, rotate the storage device to write the data to be written by the write command. The electronic device of claim 19, wherein the processor further comprises: when receiving the read command for the storage device, determining whether the memory device stores the data to be read by the read command. And if the memory device does not have the data to be read by the read command, rotate the storage device to read the data to be read by the read command. The electronic device of claim 19, wherein the processor further comprises: when the electronic device leaves the power saving mode, turning off the advanced power management mode of the storage device, and rotating the storage device to the advanced The data written to the memory device during the power management mode is moved to the storage device.