KR101280792B1 - Method and apparatus for multi-channel data storing based on power consumption - Google Patents

Abstract

Methods and apparatus are provided for writing data to multi-channel multi-way storage devices. In consideration of the correlation between the instantaneous power consumption and the recording time, a channel and a way to record data are determined. The storage device can dynamically determine and use a mix of inter-channel parallel storage, inter-way parallel storage, and both.

Description

TECHNICAL AND APPARATUS FOR MULTI-CHANNEL DATA STORING BASED ON POWER CONSUMPTION}

The following embodiments are directed to a method and apparatus for recording data based on power consumption.

When the power consumption of a storage device is changed according to a method of storing data, a method of determining a method of storing data based on power available to the storage device and an apparatus using the method are disclosed.

In order to store data in the semiconductor device, a certain amount of voltage must be applied to the semiconductor device.

Storage devices, including NVRAM, may be configured in multi-channel and multi-way to increase storage speed and capacity.

When data is simultaneously written to a plurality of channels of a storage device, power for writing data must be simultaneously applied to a plurality of semiconductor devices in the plurality of channels. Therefore, the instantaneous power consumption at the time of writing may increase rapidly.

As in a mobile device or the like, there are cases where the power available to a storage device is limited. If the instantaneous power consumption used by the storage device is outside the range of power available to the storage device, a failure or malfunction may occur in the storage device and other devices associated with the storage device.

Therefore, in order to solve the problem of the sudden increase in power consumption, a method of selecting a channel and a way to record data based on the power consumption is required.

One embodiment of the present invention can provide a storage device and a data storage method for selecting channels and ways for storing data based on a current consumption allowance and a lowest performance allowance.

According to one embodiment of the present invention, a storage device controller and a storage device control method of determining channels and ways to store data based on a current consumption limit and a minimum performance allowance and transferring the same to a storage device may be provided.

According to one aspect of the invention, a plurality of channels, each channel comprising a plurality of ways, each way includes a memory-and a control, the control based on the power available to the storage device A storage device is provided that selects channels to store data from among a plurality of channels and selects ways to write data from among the plurality of ways.

The storage device and the memory may be nonvolatile.

The memory may be a flash memory.

The plurality of channels may simultaneously divide and write the data to each other, and the plurality of ways included in each channel may sequentially divide and write the divided data to each other.

The storage device may consume more current when the number of the selected channels is larger for simultaneous writing of the selected channels when writing the data.

The storage device may further include an interface unit configured to receive information on the consumption current allowance from a host device, and the controller may recognize the consumption current allowance based on the information on the consumption current allowance.

The controller may select channels to store the data and ways to write the data based on one or more of a current consumption allowance and a minimum performance allowance.

The controller determines a channel to write the data within a maximum number of channels consuming current within the allowable current consumption value according to the available power, and writes the data based on the size of the data and the determined number of channels. The number of ways to do may be determined.

The controller may determine ways to write the data within a maximum number of ways that satisfy a minimum performance allowance, and determine channels to write the data based on the size of the data and the determined number of ways, The determined number of channels may be equal to or less than the maximum number of channels consuming current within the current consumption allowance according to the available power.

According to another aspect of the present invention, in a controller for controlling a storage device, the storage device includes a plurality of channels, each channel including a plurality of ways, each way comprising a memory, and the storage device. A controller for selecting data to store data among the plurality of channels based on the power available to the controller, selecting a way to write data among the plurality of ways, and information on the selected channels and the selected ways. A storage device controller is provided that includes an interface portion for transmitting to the storage device.

The interface unit may receive information on the plurality of channels and the plurality of ways from the storage device.

The controller may select channels to store the data and ways to write the data based on one or more of a current consumption allowance and a minimum performance allowance.

The controller may determine the maximum number of channels that consume current within the allowable current allowance as channels for storing the data, and determine the number of ways to write the data based on the size of the data and the number of selected channels. You can decide.

The controller may determine the number of ways to write the data by the maximum number satisfying the lowest performance allowance, and determine the number of channels to write the data based on the size of the data and the number of the selected ways. have.

According to another aspect of the invention, in an SSD, a plurality of channels, each channel comprising a plurality of ways, each way comprising a memory, each of the memories being assigned an address according to the channel and the way; And an address translation layer, wherein the address translation layer determines the address at which data is to be stored based on energy available to the SSD.

The address translation layer may select channels to store data among the plurality of channels based on the available energy, select ways to write data among the plurality of ways, and the address translation layer to select the selected channel. And the address may be determined so that the data is divided into the selected ways and the selected ways.

According to another aspect of the invention, there is provided a method for storing data in a storage device, the storage device comprising a plurality of channels, each channel comprising a plurality of ways, each way comprising a memory, and Obtaining information about available power that may be provided to a storage device, selecting channels to store data among the plurality of channels based on the available power, and selecting ways to write data among the plurality of ways And dividing and writing the data into the memory of the selected ways in the selected channels.

The dividing and writing of the data into the selected ways in the selected channels may be performed by simultaneously dividing the data into the plurality of channels and transmitting the divided data into the plurality of channels. Re-segmentation may include sequentially transmitting to each of the plurality of ways.

Selecting channels of data among the plurality of channels and ways of writing data of the plurality of ways based on the available power may be based on one or more of a current consumption allowance and a minimum performance allowance. Selecting channels to store data and ways to write the data.

The selecting of channels among the plurality of channels to store data and the ways to write data among the plurality of ways based on the available power may include selecting one of channels that consume current within a current consumption allowance according to the available power. Determining channels to write the data within a maximum number, and determining ways to write the data based on the size of the data and the determined number of channels.

Selecting channels of data among the plurality of channels and ways of writing data of the plurality of ways based on the available power may include selecting the data within a maximum number of ways that satisfy a lowest performance allowance. Determining the ways to write and determining the channels to write the data based on the size of the data and the determined number of ways, wherein the number of the channels is determined according to the available power. It may be less than or equal to the maximum number of channels consuming current within the tolerance.

A storage device and data storage method are provided that select channels and ways to store data based on current consumption and lowest performance tolerance.

A storage controller and a storage control method are provided for determining and transferring channels and ways to store data based on a current consumption allowance and a lowest performance allowance.

1 is a structural diagram of a storage device according to an embodiment of the present invention.
2 illustrates a data writing procedure according to channels and ways according to an embodiment of the present invention.
3 illustrates a correlation between the number of channels and ways of writing data and power consumption of a storage device according to an embodiment of the present invention.
4 illustrates parallel storage between channels and parallel storage between ways according to an embodiment of the present invention.
5 illustrates configurations of parallel storage according to an example of the present invention.
6 illustrates a configuration of a storage device and a controller of the storage device according to an embodiment of the present invention.
7 illustrates a structure of an SSD according to an embodiment of the present invention.
8 illustrates a method of storing data in a storage device according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. Like reference symbols in the drawings denote like elements.

1 is a structural diagram of a storage device 100 according to an embodiment of the present invention.

The storage device 100 includes a controller 110 and a storage 120.

The controller 110 performs an operation of writing data to the storage 120 or reading an stored data from the storage 120.

The storage unit 120 stores data.

The storage unit 120 includes a plurality of memories 154 (ie, memory chips or cells). In FIG. 1 32 memories 154 are shown.

The memory 154 may be Non-Volatile Random Access Memory (NVRAM), such as, for example, a nand flash memory.

Storage device 100 may be a non-volatile storage device. Specifically, the storage device 100 may include a solid state disk (SSD), an embedded multimedia card, a universal serial bus (USB) memory, a secure digital (SD) card, or other next generation. It may be a memory device.

The plurality of memories 154 are divided into channels and ways. That is, the storage device 100 is a storage device configured with channels and ways.

The channel corresponds to the column of the memories 154 shown in FIG. The way corresponds to the row of memories 154 shown in FIG.

In FIG. 1, eight channels are shown, including channel 0 130, channel 1 132, and channel 2 134. Also, in FIG. 1, four ways are shown: Way 0 140, Way 1 142, Way 2 144, and Way 3 146.

That is, the storage device 100 or the storage unit 120 includes a plurality of channels, each channel includes a plurality of ways, and each way includes a memory. (Or, the storage device 100 (or the storage 120) may be regarded as including a plurality of channels and a plurality of ways.)

In FIG. 1, one way (eg, way 3 146) within one channel (eg, channel 0 150) includes one memory (eg, memory 154).

One or more memories may constitute a memory package. For example, memory package 0 150 includes memory of way 0 140 of channel 0 130 and memory of way 1 142 of channel 0 130. Memory package 1 152 includes memory of way 2 144 of channel 0 130 and memory of way 3 146 of channel 0 130.

A channel is a unit that can write data independently. Writing to each channel may be performed in parallel (ie, overlapping).

A way may be viewed as one or more memories that share a command channel and a data channel.

In FIG. 1, four memories share one channel for instructions and data for writing / reading data. In other words, four memories constitute one channel.

The storage device 100 may further include an interface unit.

The interface unit interconnects the storage device 100 and a host device (eg, a personal computer using the storage device 100) that accesses the storage device 100.

The storage device 100 may receive the information on the consumption current allowance from the host device accessing the storage device 100 through the interface unit, and the controller 110 may use the received information on the consumption current allowance to consume the current. Allowances can be recognized.

2 illustrates a data writing procedure according to channels and ways according to an embodiment of the present invention.

FIG. 2 shows that in a storage device 100 composed of two channels 130 and 140, each channel writes data to four memories via four ways.

The procedure for writing data through Way 0 140, Way 1 142, Way 2 144 and Way 3 146 of Channel 0 130 at the top is shown, and at the bottom of Channel 1 140. The procedure by which data is written via way 0 140, way 1 142, way 2 144 and way 3 146 is shown.

In order for data to be written to the memory 152, the operations of "Cmd" 210, "Data" 212, and "Program" 214 must be performed as shown. The portion indicated by "Program" 214 is a section in which data is actually written to the memory.

In the storage device 100 or the controller 110, data and commands exist for each channel. Thus, writing to each channel can be done in perfect overlap and in parallel.

For example, way 0 140 of channel 0 130 and way 0 140 of channel 1 132 simultaneously operate for writing data (“Cmd” 210, “Data” 212 and “Program”). (214)).

As described above, when data is written to the storage 120, a plurality of channels in the storage may divide and write a portion of the data at the same time.

In contrast, in FIG. 1, operations performed by the ways 140, 142, 144, and 146 of the channel 0 130 ("Cmd" 210, "Data" 212, and "Program" 214) are performed. It did not overlap perfectly. The " Cmd " 210 and " Data 212 " operations are performed on only one way at a time in the order of the ways.

That is, the plurality of ways in one channel sequentially rewrite the divided data into the channels to each other. At this time, writing by the plurality of ways may be partially performed in parallel.

3 illustrates a correlation between the number of channels and ways of writing data and power consumption of a storage device according to an embodiment of the present invention.

Figure 3 shows the results of the measurement of the current consumed to write the data of 4Kbytes to 512KByte to the SSD.

When writing data to a storage device, if parallel writing to interleaving the data to a plurality of chips is performed, the writing speed is improved compared to when data is written to a single memory.

The divided storage includes divided storage between channels and divided storage between ways. Split storage between channels uses a plurality of channels for writing data. The partitioned storage method between ways uses a plurality of ways for writing data.

As shown in FIG. 3, when the number of channels simultaneously used for writing data increases, the time for recording the entire data decreases, but power consumption of the storage device 100 increases. In other words, the parallel storage method between channels produces excellent results in terms of speed, but causes a problem of increasing power consumption.

As described above, in order for data to be written to the memory by the "Program" 214 operation, a certain amount of voltage must be applied to the memory.

When data is simultaneously written through several channels, power for writing data to the semiconductor elements of the memory must be simultaneously applied to the plurality of memories. Thus, the current consumed by the storage device 100 increases rapidly. That is, when writing data, the larger the number of channels selected for writing data consumes more current.

As the structure of the storage device 100 becomes complicated and the number of channels and the number of ways increases to increase the speed and capacity of the storage device 100, the power consumption required for storing data in the storage device 100 may increase. It is more problematic.

When the current consumed by the storage device 100 increases rapidly, power consumption may increase or heat may occur. In addition, the voltage may become unstable due to excessive current flowing in the circuit of the storage device 100, and thus information may not be correctly recorded in the memory. This problem can be fatal to the storage device 100 for the purpose of reliable data storage.

Therefore, if the number of channels used simultaneously is limited so that power is consumed within the power available to the storage device 100 (i.e., the power consumption allowance), the problem can be prevented from occurring by the sudden increase in the power consumption. Can be.

On the other hand, as shown in FIG. 3, as the number of ways used for writing data increases, the time for recording the entire data increases. That is, the parallel storage method between the ways is slower than the parallel storage method of channel strength in terms of speed, but the power consumption is lower than parallel storage between channels.

When the storage device 100 uses the parallel storage between the channels and the parallel storage between the ways by the dynamic mapping method, the storage device 100 consumes more power than the parallel storage between the fixed channels and the parallel storage between the ways. Benefits can be gained in terms of the performance and performance requirements (i.e., the time at which data is written).

The power available to the storage device 100, that is, the power available to the storage device 100 (or the current consumption limit) may be limited. In addition, certain minimum performance tolerances may be required of the storage device 100. The lowest performance tolerance may be the maximum time allowed for storage device 100 to record data of a particular size. The lowest performance allowance may be the maximum allowable write latency for the storage device 100 to write data of a particular size.

The storage device 100 or the controller 110 may provide information about the available power (or current consumption allowance) and information on the minimum performance allowance with an external host (or operating system or application). In addition, the storage device 100 or the controller 110 may internally determine information on available power (or current consumption allowance) and information on a minimum performance allowance.

Information about the available power (or current consumption tolerance) may be determined based on the storage device 100, the circuit, or the system environment.

The controller 110 may select channels for storing data and ways to write the data, based on one or more of a current consumption allowance and a minimum performance allowance. That is, the controller 110 may variably select parallel storage between channels and parallel storage between ways based on at least one of a current consumption allowance and a minimum performance allowance.

The controller 110 may select channels to store data among the plurality of channels based on a power budget available to the storage device 100, and select ways to write data among the plurality of ways.

That is, the controller 110 may select channels for storing data among the plurality of channels based on the power available to the storage device 100. When a channel to store data is selected, the controller 110 may select ways to store data among a plurality of ways in the selected channel.

When a channel and a way to store the data are selected, the controller 110 may write data into the selected channel and the way (ie, into the memory of the selected channel and the way).

4 illustrates parallel storage between channels and parallel storage between ways according to an embodiment of the present invention.

Four points 430, 432, 434, and 436 in FIG. 4 indicate a method of recording a page of 32 KBytes (that is, eight pages of 4 KBytes).

The x axis represents time spent for writing and the y axis represents instantaneous power consumption during recording.

In Fig. 4, the storage device 100 for recording is composed of eight channels.

When data is written to the 8-channel storage device 100, 8 channels × 1 way 430, 4 channels 2 ways 432, 2 channels 4 ways 434, and 1 channel 8 ways 436. Can be used.

As shown, the instantaneous power consumption is highest when 8 channels are used. On the other hand, when recording in one channel 8 way, the time required for recording is the longest.

That is, as the number of simultaneous recording channels is increased (i.e., the number of ways is decreased), the writing time is shortened, but the instantaneous power consumption increases. Conversely, as the number of simultaneous write channels is reduced (ie, as the number of ways is increased), the instantaneous current consumption decreases while the total write time increases.

In FIG. 4, the maximum tolerable current 410 and the performance bound 420 are shown.

The allowable current 410 is the maximum current consumption allowed for the storage device 100. The storage device 100 must use a current within the current consumption limit. Thus, the thermo-current tolerance limits the number of channels that the storage device 100 can use for writing data.

That is, an eight channel by one way storage method 430 that consumes more current than the current consumption allowance cannot be used.

Performance tolerance 420 is the lowest performance tolerance required for storage device 100 to store data. For example, the storage device 100 must complete data storage within a time equal to or less than the value indicated by the performance allowance 420.

According to FIG. 4, it is not possible to extend parallel storage between ways larger than 4 ways. That is, the one channel by eight way storage method 436, which takes more than the performance allowance, cannot be used.

The portion that satisfies the conditions of the allowable current 410 and the performance tolerance 420 is the usable range 440. Storage methods 432 and 434 within usable range 440 of the storage methods 430, 432, 434 and 436 are feasible solutions.

Which of the available solutions 432 and 434 to use may optionally be determined by implementation.

As described above, the controller 110 may select channels to store data and ways to write data based on one or more of a current consumption allowance and a minimum performance allowance. That is, the controller 110 may select channels to store data and ways to write data in consideration of the consumption current allowance and the minimum performance allowance at the same time.

The controller 110 may determine a channel to write data within a maximum number of channels consuming a current within the allowable current consumption value according to the available power. In addition, the controller 110 may determine the number of ways to write data based on the size of the data and the determined number of channels. In this case, the determined number of ways may be the minimum number necessary to store data.

On the other hand, the controller 110 may determine ways to write data within the maximum number of ways that satisfy the lowest performance allowance, and determine channels to write data based on the size of the data and the determined number of ways. At this time, the determined number of channels is less than or equal to the maximum number of channels consuming current within the allowable current consumption value according to available power. In addition, the determined number of channels may be the minimum number necessary for storing data. That is, the determined number of channels may be sufficient to store data and may be a value for minimizing current consumption.

For example, when there is no consumption current allowance (that is, when the maximum allowable instantaneous current is not limited), the controller 110 may store data with the maximum channel parallelism.

If the consumption current tolerance is XmA, the channel parallelism may be X / (the applied current required for flash writing). For example, if the current consumption allowance is 200 mA and the current consumed to write a single page (4 KByte) in one flash is 30 mA, up to six channels can be operated simultaneously.

By the controller 110, the storage device 100 may perform data writing to ensure the maximum allowable value and the lowest performance of the current consumption. In addition, the storage device 100 may perform data writing by maximizing performance efficiency compared to current (or power) by simultaneously considering a correlation between power consumption and performance.

5 illustrates configurations of parallel storage according to an example of the present invention.

The memory 512 stores data in blocks of 4 KBytes, and includes two blocks 514 and 516. (Or, two memories each storing 4 KBytes may represent a memory package for one way.)

The storage unit 120 of FIG. 5 is composed of eight channels and eight ways.

The storage unit 120 stores data of 32 KBytes consecutively composed of 8 4KByte pages.

In the first configuration 510, 32 KBytes of data were distributed and stored in eight channels and one way.

The memories 518 corresponding to the selected channel and way store 4 KByte data in one block.

The first configuration 510 shortens the writing time by increasing the simultaneous recording channel. However, the instantaneous power consumption consumed by the first configuration 510 is higher than the other configurations 520 and 560. That is, the first configuration 510 may be regarded as a layout technique that maximizes the writing performance of the storage device 100.

In the second configuration 520, 32 KBytes of data were distributed and stored in four channels and two ways.

The memories 522 corresponding to the selected channel and way store 4KByte data in one block.

In the third configuration 530, 32 KBytes of data are distributed and stored in four channels and one way.

The memories 532 corresponding to the selected channel and way store 4Kbytes of data in each of the two blocks.

In the fourth configuration 540, 32 KBytes of data were distributed and stored in two channels and two ways.

The memories 542 corresponding to the selected channel and way store 4 KBytes of data in each of the two blocks.

In the fifth configuration 550, 32 KBytes of data were distributed and stored in one channel and four ways.

The memories 552 corresponding to the selected channel and way store 4 KByte data in each of the two blocks.

In the sixth configuration 560, 32 KBytes of data were distributed and stored in one channel and eight ways.

The memories 562 corresponding to the selected channel and way store 4KByte data in one block.

The sixth configuration 560 is a placement technique that minimizes instantaneous power consumption.

6 illustrates a configuration of a storage device and a controller of the storage device according to an embodiment of the present invention.

Although the storage device 100 may directly select a split storage method between channels and a split storage method between ways, in some cases, a host controlling the storage device 100 may divide the storage method between channels and the split storage method between the channels. It may be more appropriate to choose a method.

For example, there may be a case in which the storage device 100 cannot obtain information on power available directly, or a host may control a plurality of peripheral devices according to the power available to the entire system. In this case, it may be more desirable for the host to determine a split storage method between channels of the storage device 100 and a split storage method between ways through a special controller therein, and provide the determined method to the storage device 100.

The storage device controller 600 includes a controller 610 and an interface unit 610.

The controller 610 selects channels to store data among a plurality of channels of the storage device 100 based on power available to the storage device 100, and writes data among the plurality of ways of the storage device 100. Select the ways.

The interface unit 620 transmits information about the selected channels and the selected ways to the storage device 100.

In order to determine a split storage method between channels and a split storage method between ways, the interface unit 620 may store information about the storage device 100, for example, information about a plurality of channels and a plurality of ways. Can be received from.

The controller 610 may select channels to store data and ways to write data based on one or more of the current consumption limit and the minimum performance allowance.

The controller 610 may determine the maximum number of channels consuming current within the allowable current allowance as channels to store data, and determine the number of ways to write data based on the size of the data and the number of selected channels. .

The controller 610 may determine the number of ways to write data by the maximum number that satisfies the lowest performance allowance, and determine the number of channels to write the data based on the size of the data and the number of selected ways.

Technical contents according to an embodiment of the present invention described above with reference to FIGS. 1 to 5 may be applied to the present embodiment as it is. Therefore, more detailed description will be omitted below.

7 illustrates a structure of an SSD according to an embodiment of the present invention.

The storage device 100 may be an SSD 700.

The memory 154 in the storage device 100 may be flash memory in the SSD 700.

In addition, the controller 110 may be an address translation layer 710 of the SSD 700 or a component including the address translation layer.

The SSD 700 includes an address translation layer 710 and a storage 120.

The plurality of channels and the plurality of ways in the storage 120 may correspond to addresses of the memory in the flash memory.

For example, according to a channel in which data is to be stored, the upper n bits of the address of the data may be determined. In addition, according to the way in which the data is to be stored, the next m bits of the address of the data may be determined. The remaining bits except for the n and m bits of the address of the data may represent an address within the flash memory chip determined by the channel and the way.

Thus, determining the channel and way for the FTL 710 to store specific data may mean that the FTL 710 determines the internal address of the SSD 700 in which the data will be stored.

In addition, the power available to the SSD 700 may be regarded as one of the energy available to the SSD 700.

Accordingly, the FTL 710 may determine an address where data is to be stored based on the energy available to the SSD 700.

In addition, the FTL 710 may select channels to store data among a plurality of channels based on available energy, and select ways to write data among the plurality of ways. The FTL 710 may determine an address such that data is divided and written into selected channels and selected ways.

The mapping technique of the FTL 710 simultaneously considers a correlation between power consumption and performance, thereby maximizing the energy consumption efficiency of the SSD 700. In addition, the FTL 710 provides an SSD address mapping technique that does not exceed the current consumption limit. Therefore, reliability is ensured in data recording of the SSD 700.

Technical contents according to an embodiment of the present invention described above with reference to FIGS. 1 to 6 may be applied to the present embodiment as it is. Therefore, more detailed description will be omitted below.

8 illustrates a method of storing data in a storage device according to an embodiment of the present invention.

The following steps S810 to S830 may be performed in whole or in part by the storage device 100 and the storage controller 600 described above.

The storage device 100 includes a plurality of channels. Each channel includes a plurality of ways. Each way contains a memory.

In operation S810, information on available power that may be provided to the storage device 100 is obtained.

In operation S820, channels for storing data are selected among the plurality of channels based on available power, and ways for writing data among the plurality of ways are selected.

In step S830, the data is divided and written in the memory of the selected ways in the selected channels.

The storage device 100 consumes more current as the number of selected channels increases when writing data.

Data may be divided and transmitted simultaneously into the plurality of channels, and data divided and transmitted into each of the plurality of channels may be repartitioned and sequentially transmitted to each of the plurality of ways.

Channels to store data and ways to write data may be selected based on one or more of a current consumption allowance and a lowest performance allowance.

Channels to write data may be selected within the maximum number of channels consuming current within the current consumption tolerance according to available power. At this time, the ways to write data may be determined based on the size of the data and the number of channels determined.

Ways to write data may be determined within the maximum number of ways that meet the lowest performance tolerance. At this time, the channels to write data may be determined based on the size of the data and the number of determined ways. However, the determined number of channels is less than or equal to the maximum number of channels consuming current within the current consumption allowance according to available power.

Technical contents according to an embodiment of the present invention described above with reference to FIGS. 1 to 7 may be applied to the present embodiment as it is. Therefore, more detailed description will be omitted below.

Method according to an embodiment of the present invention is implemented in the form of program instructions that can be executed by various computer means may be recorded on a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the present invention or may be available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

100: Storage device
600: storage device controller
700: SSD

Claims (22)

In the storage device,
A plurality of channels, each channel comprising a plurality of ways, each way comprising a memory; And
A control unit;
Lt; / RTI >
The controller selects channels to store data from among the plurality of channels based on power available to the storage device, selects ways to write data among the plurality of ways,
And the plurality of channels simultaneously divides and writes the data to each other, and the plurality of ways included in each channel sequentially rewrite the divided data to each other and write. The method of claim 1,
The storage device and the memory are non-volatile. delete The method of claim 1,
The storage device consumes more current as the number of the selected channels increases for simultaneous writing to the selected channels when writing the data. The method of claim 1,
Interface unit for receiving information on the current consumption allowance from the host device
Further comprising:
The control unit recognizes the consumption current allowance based on the information on the consumption current allowance. The method of claim 1,
And the controller selects channels to store the data and ways to write the data based on one or more of a current consumption allowance and a minimum performance allowance. The method of claim 1,
The controller determines a channel to write the data within a maximum number of channels consuming current within the allowable current consumption value according to the available power, and writes the data based on the size of the data and the determined number of channels. The storage device determines the number of ways. The method of claim 1,
The controller determines ways to write the data within the maximum number of ways that meet the lowest performance tolerance, and determines channels to write the data based on the size of the data and the determined number of ways. Wherein the number of channels is less than or equal to the maximum number of channels consuming current within the current consumption tolerance according to the available power. A controller for controlling a storage device, the storage device comprising a plurality of channels, each channel comprising a plurality of ways, each way comprising a memory,
A controller configured to select channels to store data among the plurality of channels based on power available to the storage device and to select ways to write data among the plurality of ways; And
Interface unit for transmitting the information about the selected channels and the selected way to the storage device
Lt; / RTI >
The controller determines the maximum number of channels consuming the current within the allowable current allowance as channels to store the data, and determines the number of ways to write the data based on the size of the data and the number of the selected channels. , Storage controller. 10. The method of claim 9,
And the interface unit receives information about the plurality of channels and the plurality of ways from the storage device. delete delete delete In SSD,
A plurality of channels, each channel comprising a plurality of ways, each way comprising a memory, each of the memories being assigned an address according to the channel and the way; And
Address translation layer;
Lt; / RTI >
The address translation layer determines the address where data is to be stored based on the energy available to the SSD,
And the plurality of channels simultaneously divides and writes the data to each other, and the plurality of ways included in each channel sequentially rewrite the divided data to each other. 15. The method of claim 14,
The address translation layer selects channels to store data among the plurality of channels based on the available energy, selects ways to write data among the plurality of ways, and the address translation layer selects the selected channels. And determine the address such that the data is divided and written to the selected ways. A method of storing data in a storage device, the storage device comprising a plurality of channels, each channel comprising a plurality of ways, each way comprising a memory,
Obtaining information about available power that may be provided to the storage device;
Selecting channels to store data among the plurality of channels based on the available power, and selecting ways to write data among the plurality of ways; And
Dividing and writing the data into the memory of the selected ways in the selected channels
Comprising a data storage method. 17. The method of claim 16,
And the storage device and the memory are nonvolatile. 17. The method of claim 16,
Dividing and writing the data into the selected ways in the selected channels,
Simultaneously dividing and transmitting the data into the plurality of channels; And
Subdividing the divided and transmitted data into each of the plurality of channels and sequentially transmitting the divided data to each of the plurality of ways
Comprising a data storage method. 17. The method of claim 16,
And the storage device consumes more current as the number of the selected channels increases when writing the data. 17. The method of claim 16,
Selecting channels of the plurality of channels to store data and ways of writing the data of the plurality of ways based on the available power,
Selecting channels to store the data and ways to write the data based on one or more of a current consumption tolerance and a lowest performance tolerance
Comprising a data storage method. 17. The method of claim 16,
Selecting channels of the plurality of channels to store data and ways of writing the data of the plurality of ways based on the available power,
Determining channels for writing the data within a maximum number of channels consuming current within a current consumption allowance according to the available power; And
Determining ways to write the data based on the size of the data and the determined number of channels;
Comprising a data storage method. 17. The method of claim 16,
Selecting channels of the plurality of channels to store data and ways of writing the data of the plurality of ways based on the available power,
Determining ways to write the data within the maximum number of ways that meet a lowest performance tolerance; And
Determining channels for writing the data based on the size of the data and the determined number of ways
And the determined number of channels is less than or equal to the maximum number of channels consuming current within the current consumption tolerance according to the available power.

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