KR20090110626A - Apparatus for testing storage voltage margin - Google Patents

Abstract

PURPOSE: An apparatus for testing a storage medium voltage margin is provided to measure the reliability on the level variation of power, that is a parameter sensitive to a storage medium, more efficiently. CONSTITUTION: An apparatus for testing a storage medium voltage margin comprises power supply units(310-1,310-2,310-3,310-4,320-1,320-2,320-3,320-4) and controllers(310,320). The power supply units can supply power to a connected storage medium as varying the power. The controllers control power supply operations of the power supply units so that the power supplied to the storage medium can be varied, and tests the reliability of the storage medium through a process of reading data recorded in the storage medium.

Description

Apparatus for testing storage voltage margin

The present invention relates to a storage medium voltage margin test apparatus, and more particularly, to a storage medium voltage margin test apparatus for testing the reliability of a storage medium, such as a HDD (Hard Disk Drive).

A storage medium is a medium for storing information, and is embedded in not only a PC but also all electronic products. HDD is the most widely used mass storage medium of the PC, but recently SSD (Solid State Disk) is also used.

Reliability is a concept that represents the stability of parts, devices, or systems, and it is a property that maintains the quality that they should have for a certain period of time and secures customer satisfaction without leading to an accident. To ensure reliability, consideration should be given to durability, stability and design reliability.

Since a storage medium corresponds to a product whose reliability may be a problem, reliability determination of the storage medium should be performed very precisely. In addition, the reliability test of the storage medium takes considerable time.

Therefore, in consideration of the specificity of the storage medium reliability test, a search for a method for more efficiently testing the reliability of the storage medium is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a more efficient test for reliability of a storage medium. The voltage margin of the storage medium is varied while varying the power applied to the storage medium. The present invention provides a storage medium voltage margin test apparatus and method for testing reliability of a storage medium through measurement, and testing a large amount of storage media in one device at a time.

In accordance with an aspect of the present invention, a storage medium voltage margin test apparatus includes: a power supply unit capable of supplying a variable power supply to a connected storage medium; And controlling the power supply operation of the power supply unit so that the power supplied to the storage medium is variable, thereby recording the data on the storage medium and reading the data recorded on the storage medium. And a control unit for testing.

The control unit may include 1) controlling the power supply unit to supply a level of power higher than the rated power to the storage medium, testing the reliability of the storage medium, and 2) lowering the rated power to the storage medium. Preferably, the power supply unit is controlled to supply power, and the reliability of the storage medium is tested.

In addition, if it is determined that the data read from the storage medium is identical to the data recorded on the storage medium, the controller may perform the recording and reading operation on the storage medium. The reliability of can be judged to be good.

The storage medium voltage margin test apparatus may include a plurality of power supply units, and the control unit may control the power supply operations of the plurality of power supply units, respectively, to each of the plurality of storage media connected to the plurality of power supply units. It is desirable to test the reliability.

The storage medium voltage margin test apparatus may include a plurality of controllers controlling power supply operations of a plurality of power supply units, control power supply control operations of the plurality of controllers, and test results from the plurality of controllers, respectively. It is preferable to further include a; computing module to collect and provide to the user.

The power supply unit outputs two power sources through two output terminals, and the control unit outputs two power sources through the two output terminals according to the type of storage medium connected to the power supply unit. The power supply can be controlled to be the same or different.

The control unit may control the power supply unit so that two powers output through the two output terminals are different when it is determined that a hard disk drive (HDD) is connected to the power supply unit, and at least one of the power supply unit is configured. If it is determined that the SSD (Solid State Disk) is connected to the power supply may be controlled so that the two power output through the two output terminals are the same.

The power supply unit monitors whether power is output to the storage medium and transmits a monitoring result to the control unit. When the control unit determines the reliability of the storage medium, the control unit receives the monitoring result from the power supply unit. See.

The power supply unit may measure a level of power output to the storage medium, and transmit a measurement result to the control unit. The control unit may determine the reliability of the storage medium and receive the power from the power supply unit. Reference can be made to the measurement results.

The controller may test the reliability of the storage medium by determining whether the storage medium operates normally even when the voltage of the power supplied to the storage medium deviates by a certain level from the rated voltage.

As described above, according to the present invention, the reliability of the storage medium can be tested by measuring the voltage margin of the storage medium while varying the power applied to the storage medium. Reliability can be measured more efficiently.

In addition, it is possible to test a large amount of storage media in one device at a time, thereby improving the test efficiency.

Hereinafter, with reference to the drawings will be described the present invention in more detail.

1 is a block diagram of an HDD voltage margin test apparatus according to an embodiment of the present invention. In the HDD voltage margin test apparatus according to the present exemplary embodiment shown in FIG. By testing the reliability of the HDD.

In this case, the HDD voltage margin test apparatus may test not only one HDD but also a plurality of HDDs at a time.

As shown in FIG. 1, the HDD voltage margin test apparatus according to the present exemplary embodiment includes a main computer 100, a switching unit 200, and test modules 310, 320,.

The main computer 100 receives a user's operation command and controls the operation of the HDD voltage margin test apparatus according to the input operation command. The main computer 100 is connected to communicate with the test modules 310, 320,... Through the switching unit 200.

The main computer 100 controls the HDD voltage margin test operation of the test modules 310, 320,... Specifically, the main computer 100 determines the voltage of the power supply to which the test modules 310, 320,..., Are to be applied to the HDD, and transmits the information about the determined voltage to the test modules through the switching unit 200. The test modules 310, 320,... Are controlled by the process of passing to 310.

In addition, the main computer 100 is notified of the HDD voltage margin test results from the test modules 310, 320,... Through the switching unit 200. It is provided to the user through the output means.

The test modules 310, 320, ... test the reliability of the HDDs connected thereto. In this case, the reliability test is based on a method of testing the power supply voltage margin of the HDD while the test modules 310, 320,..., Variably supply the power supply voltage.

1 illustrates a first test module 310 connected with four HDDs 410-1 through 410-4 and a second test module 320 connected with four HDDs 420-1 through 420-4. This does not mean that the HDD voltage margin test device has two test modules.

The test module provided in the HDD voltage margin test apparatus may be one, as well as three or more. Note that only two test modules 310 and 320 are shown in FIG. 1 for convenience of illustration.

As shown in FIG. 1, the first test module 310 includes a sub control unit-1 310-0, a power supply unit 1-1 310-1, a power supply unit 1-2 (310-2), and a power supply unit. 1-3 (310-3) and power supply 1-4 (310-4).

The power supply units 310-1 to 310-4 supply power to the HDDs 410-1 to 410-4 connected to the power supply units 310-1 to 310-4. Specifically, 1) the power supply unit 1-1 310-1 supplies power to the HDD 1-1 (410-1), and 2) the power supply unit 1-2 (310-2) is the HDD 1-2 (410). -2) power, and 3) power supply 1-3 (310-3) supplies power to HDD 1-3 (410-3), 4) power supply 1-4 (310-4) Supply power to HDD 1-4 (410-4).

The power supplied to the HDDs 410-1 to 410-4 by the power supplies 310-1 to 310-4, respectively, is not fixed but variable.

The sub controller-1 310-0 controls the power supply operation of the power supply units 310-1 to 310-4 such that the power supplied to the HDDs 410-1 to 410-4 is variable. In addition, the sub-controller-1 310-0 'writes data sequentially to the HDDs 410-1 to 410-4' (hereinafter, referred to as 'Write') and the 'HDDs 410-1 to 410'. -4) sequentially read the data recorded in '(hereinafter referred to as' Read').

Specifically, the sub-controller-1 310-0 supplies power supplies 310-1 such that “5V (IC driving power) / 12V (motor driving power)” is supplied to the HDDs 410-1 to 410-4. 310-4), and write and read.

Here, 5V is a rated voltage of the IC driving power source, which is a power source required to drive ICs provided in the HDD, and 12V is a rated voltage of the motor driving power source, a power source required to drive the motor provided in the HDD.

At this time, if it is determined that the read data and the written data match, the sub-controller-1 310-0 determines that the HDD operation is normal at the rated voltage of 5V / 12V. On the other hand, if it is determined that the read data and the written data do not match, the sub-controller-1 310-0 determines that the HDD operation is abnormal at the rated voltage of 5V / 12V.

The determination of whether the HDD is normally operated at the rated voltage is performed separately for each of the HDDs 410-1 to 410-4, and accordingly, the determination result is also determined for each of the HDDs 410-1 to 410-4. can be different.

Subsequently, the sub-controller-1 310-0 supplies the power supplies 310- such that “6V (IC drive power) /14.4V (motor drive power)” is supplied to the HDDs 410-1 to 410-4. 1 to 310-4) and write and read.

Here, 6V is an upper limit voltage exceeding 20% of the rated voltage of the IC driving power supply for the HDD, 14.4V is an upper limit voltage exceeding 20% of the rated voltage of the motor driving power supply for the HDD.

At this time, if it is determined that the read data and the written data match, the sub-controller-1 310-0 determines that the HDD operation is normal at the upper limit voltage 6V / 14.4V. On the other hand, if it is determined that the read data and the written data do not match, the sub-controller-1 310-0 determines that the HDD operation is abnormal at the upper limit voltage 6V / 14.4V.

The determination of whether the HDD is normally operated at the upper limit voltage is performed separately for each of the HDDs 410-1 to 410-4, and accordingly, the determination result is also for each of the HDDs 410-1 to 410-4. can be different.

Sub-controller-1 310-0 then supplies power supplies 310- such that “4V (IC drive power) /9.6V (motor drive power)” is supplied to HDDs 410-1 through 410-4. 1 to 310-4) and write and read.

Here, 4V is a lower limit voltage that is 20% less than the rated voltage of the IC driving power supply for the HDD, and 9.6V is a lower limit voltage that is 20% less than the rated voltage of the motor driving power supply for the HDD.

At this time, if it is determined that the read data and the written data match, the sub-controller-1 310-0 determines that the HDD operation is normal at the lower limit voltage 4V / 9.6V. On the other hand, if it is determined that the read data and the written data do not match, the sub-controller-1 310-0 determines that the HDD operation is abnormal at the lower limit voltage 4V / 9.6V.

The determination of whether the HDD is normally operated at the lower limit voltage is performed separately for each of the HDDs 410-1 to 410-4, and thus the determination result is also determined for each of the HDDs 410-1 to 410-4. can be different.

The sub-controller-1 310-0 determines that the HDD determined to be normal at both the upper limit voltage and the lower limit voltage as well as the rated voltage is an HDD that secures a power supply voltage margin and is a reliable HDD. This is because voltage margins of ± 20% are secured for the power supply.

So far, the first test module 310 has been described in detail. Sub control unit-2 (320-0), power supply unit 2-1 (320-1), power supply unit 2-2 (320-2), power supply unit 2-3 (320-3), and power supply unit 2-4 (320) Detailed description of the second test module 320 including the -4) is given in the sub-controller-1 (310-0), the power supply unit 1-1 (310-1), and the power supply unit 1-2 (310-2). The same function as the first test module 310 including the power supply units 1-3 (310-3) and the power supply units 1-4 (310-4).

Therefore, since the detailed description of the second test module 320 can be easily derived from the detailed description of the first test module 310, the detailed description of the second test module 320 is omitted.

Hereinafter, the power supply units 310-1 to 310-4 and 320-1 to 320-4 shown in FIG. 1 will be described in detail. The components included in the power supplies 310-1 to 310-4 and 320-1 to 320-4 and their functions are all the same. Hereinafter, a power supply having a reference numeral 500 assigned thereto will be described. Assuming these are representative, it demonstrates in detail with reference to FIG.

Components and functions of the power supply unit 500 illustrated in FIG. 2 are the same as those of the power supply units 310-1 to 310-4 and 320-1 to 320-4.

As shown in FIG. 2, the power supply unit 500 includes an input / output unit 510, a decoding unit 520, an address determining unit 530, a power control unit-1 540, and a power control unit-2 550. And a power output unit 560.

The input / output unit 510 functions as a communication interface for exchanging data / information with the sub controller. Voltage control information is received from the sub controller through the input / output unit 510.

The decoding unit 520 decodes the voltage control information received from the sub control unit through the input / output unit 510 in a format that can be determined by the address determination unit 530 and the power control units 540 and 550 which will be described later. .

The address determiner 530 extracts an address included in the voltage control information decoded and transmitted by the decoder 520. Then, the address determination unit 530 determines whether the extracted address matches the address of the power supply unit 500 to which it belongs.

If it is determined to match, the address determination unit 530 transfers the voltage control content included in the voltage control information to the power control units 540 and 550. However, if it is determined that they do not match, the address determination unit 530 discards the voltage control information. In the case of not matching, the voltage control information is information for controlling a power supply unit other than the power supply unit 500.

The power supply unit 500 reacts only to voltage control information corresponding to the address determination unit 530. Referring to FIG. 1, when the sub-controller-1 310-0 generates and outputs voltage control information including the address of the power supply-2-2, the voltage control information may include the power supply units (see FIG. 1). 310-1 to 310-4, but only the power supply unit-2 310-2 responds thereto. This is because the remaining power supply units 310-1, 310-3, and 310-4 discard the voltage control information received by the address determining unit.

Referring back to FIG. 2, the power controllers 540 and 550 will be described in detail. The power controllers 540 and 550 generate power based on the voltage control information transmitted through the address determination unit 530, and apply the generated power to the power output unit 560.

The power control unit-1 540 includes a DC / DC converter-1 541 and a conversion control unit-1 542. The DC / DC converter-1 541 generates an output power source by converting a 24 V power source applied thereto. For example, the DC / DC converter-1 541 may convert the applied 24V power supply into a 2.5V to 7.5V power supply and output the same.

The conversion controller-1 542 adjusts the voltage of the power generated by the DC / DC converter-1 541. At this time, the conversion control unit-1 (542) refers to the information on the IC driving voltage contained in the voltage control content transmitted through the address determination unit 530, so that the DC / DC converter to generate a power source having a voltage corresponding thereto. -1 (541) is controlled.

For example, 1) when the IC driving voltage indicates 5V, the conversion controller-1 542 adjusts the voltage of the power generated by the DC / DC converter-1 541 to 5V, and 2) the IC driving voltage. In the case of indicating 6 V, the conversion control unit-1 542 adjusts the voltage of the power generated by the DC / DC converter-1 541 to 6 V, and 3) the conversion control unit when the IC driving voltage indicates 4 V. -1 542 adjusts the voltage of the power generated by the DC / DC converter-1 541 to 4V.

Meanwhile, the power control unit-2 550 includes a DC / DC converter-2 551 and a conversion control unit-2 552.

The DC / DC converter-2 551 converts an applied 24V power supply to generate an output power supply. For example, the DC / DC converter-2 551 may convert an applied 24V power supply into a 2.5V to 18V power source and output the same.

The conversion control unit-2 552 adjusts the voltage of the power generated by the DC / DC converter-2 551. At this time, the conversion control unit-2 (552) refers to the information on the motor driving voltage contained in the voltage control content transmitted through the address determination unit 530, the DC / DC converter to generate a power supply of a voltage corresponding thereto -2 (551) is controlled.

For example, 1) when the motor driving voltage indicates 12V, the conversion control unit-2 552 adjusts the voltage of the power generated by the DC / DC converter-2 551 to 12V, and 2) the motor driving voltage. In the case of indicating 14.4 V, the conversion control unit-2 552 adjusts the voltage of the power generated by the DC / DC converter-2 551 to 14.4 V, and 3) the motor driving voltage indicates 9.6 V. In this case, the conversion control unit-2 552 adjusts the voltage of the power source generated by the DC / DC converter-2 551 to 9.6V.

The power output unit 560 includes a power output unit-1 561 and a power output unit-2 562. The power output unit-1 561 outputs a 4V, 5V, or 6V power generated by the DC / DC converter-1 541 to an IC driving power input terminal provided in the HDD.

The power output unit-2 562 outputs a 9.6V, 12V, or 14.4V power generated by the DC / DC converter-2 551 to a motor driving power input terminal provided in the HDD.

3 shows a power supply 500 implemented slightly differently from that shown in FIG. 2.

The power supply unit 500 illustrated in FIG. 3 further includes an output monitoring unit 570 and an encoding unit 580 in addition to the components illustrated in FIG. 2. The output monitoring unit 570 detects whether power is output from the power output unit 560. Specifically, the output monitoring unit 570 is 1) whether or not the power is output from the power output unit-1 (561), and 2) whether or not the power is output from the power output unit-2 (562) or not. Monitor whether or not.

The encoding unit 580 encodes the monitoring result of the output monitoring unit 570 in a format that can be transmitted to the sub control unit, and transmits the encoded monitoring result to the sub control unit through the input / output unit 510.

Then, the sub-controller refers to the monitoring result when determining whether to secure the HDD power voltage margin (reliability determination). That is, the sub-controller determines whether the HDD power voltage margin is secured only when the monitoring result is normal (that is, when power is output from both the power output unit-1 561 and the power output unit-2 562).

On the other hand, when the monitoring result is not normal (that is, when no power is output from the power output unit-1 561 or the power output unit-2 562), the sub controller determines whether to secure the HDD power voltage margin. Do not perform. This is because the HDD test is not normal.

Meanwhile, FIG. 4 illustrates a power supply 500 implemented slightly differently from that shown in FIG. 3. The power supply unit 500 illustrated in FIG. 4 is different from that illustrated in FIG. 3 in that the power supply unit 500 includes an output measuring unit 580 instead of the output monitoring unit 570.

The output measuring unit 580 measures the voltage of the power output from the power output unit 560. Specifically, the output measuring unit 580 1) measures the voltage of the power output from the power output unit-1 561, and 2) measures the voltage of the power output from the power output unit-2 562.

The encoding unit 580 encodes the output measurement result of the output measuring unit 580 in a format that can be transmitted to the sub control unit, and transmits the encoded measurement result to the sub control unit through the input / output unit 510.

Then, the sub-controller refers to the output measurement result when determining whether to secure the HDD power voltage margin (reliability determination). That is, the sub-controller margins the HDD power supply voltage only when the output measurement result is normal (that is, when the power supply having the correct size voltage is output from both the power output unit-1 561 and the power output unit-2 562). Make a decision about whether to secure it.

On the other hand, when the output measurement result is not normal (that is, when the power source having the correct size voltage is not output from the power output unit-1 561 or the power output unit-2 562), the sub-controller Do not judge whether HDD power voltage margin is secured. This is because the HDD test is not normal.

5 is a flowchart provided to explain an HDD voltage margin test method according to an embodiment of the present invention.

As shown in FIG. 5, when the main computer 100 first instructs the HDD power voltage margin test command (S610), the test modules 310, 320,. 4, 420-1 to 420-4, ...) to supply power (S620).

Power supply in step S620, the sub-control unit (310-) provided in the test modules 310, 320, ... received the HDD power voltage margin test command from the main computer 100 through the switching unit 200. 0, 320-0, ...) control the power supply operation of the power supply units 310-1 to 310-4, 320-1 to 320-4, ....

The voltage of the power supplied in step S620 follows the command indicated in step S610. Specifically, 1) when the main computer 100 commands the HDD test at the rated voltage in step S610, in step S620, the power supply of 5V / 12V, and 2) in step S610 the main computer 100 is the upper limit voltage In the step S620, 6V / 14.4V power is supplied in step S620, and 3) In step S610, the main computer 100 commands the HDD test at the lower limit voltage. In step S620, 4V / 9.6 is supplied. Supply the power of V, 4) in step S610 the main computer 100 is V ₁ V / V ₂ V (where V ₁ V and V ₂ V If the command to test the HDD at a voltage other than the voltage listed above, V _{1 in} step S620 V / V ₂ Supply V power.

Subsequently, the sub-control units 310-0, 320-0, ... provided in the test modules 310, 320,..., HDDs 410-1 to 410-4, 420-1 to 420- 4, ...) Write and Read (S630).

When write and read are completed, the sub controllers 310-0, 320-0, ... are powered on the HDDs 410-1 to 410-4, 420-1 to 420-4, ... The determination of whether the voltage margin is secured (reliability determination) is performed (S640). In detail, step S640 is performed by a process of determining whether the read data is identical to the written data.

If the power supply units 310-1 to 310-4, 320-1 to 320-4, ... are implemented as shown in FIG. 3, the output monitoring result is referred to when determining the reliability in step S640. .

If the power supply units 310-1 to 310-4, 320-1 to 320-4, ... are implemented as shown in FIG. 4, an output measurement result is referred to when determining reliability in step S640. .

The determination result (reliability determination result) of securing the power voltage margin performed in step S640 is transmitted to the main computer 100 from the sub controllers 310-0, 320-0, ..., and the main computer 100 The result of determining whether to secure a power voltage margin for the received HDDs 410-1 to 410-4, 420-1 to 420-4, ... is provided to the user through the display (S650).

Up to now, the process of testing the reliability of the HDD by determining whether the power supply voltage margin is secured to the HDD has been described with reference to a preferred embodiment.

The HDD mentioned in the present embodiment assumes an example of a storage medium, and the technical idea of the present invention is applicable to other storage media other than the HDD. Another example of a storage medium may be a solid state disk (SSD).

6 shows an SSD voltage margin test apparatus. Since SSDs are not driven by a motor, no motor drive power is required, and only one IC drive power is required. Therefore, two SSDs are connected to each of the power supply units 310-1 to 310-4, 320-1 to 320-4,.

When used as the SSD voltage margin test apparatus, the sub controllers 310-0, 320-0, ... are converted controllers such that 4V, 5V, or 6V is also output from the power output unit-2 (562) shown in FIG. -2 (552) should be controlled.

7 shows the HDD / SSD voltage margin test apparatus. This makes it possible to test HDDs and SSDs together. In this case, the sub controllers 310-0, 320-0, ...) 1) the IC drive power and the motor drive power are output from the power supply connected to the HDD, and 2) the IC drive power from the power supply connected to the SSD. It is required to control two outputs.

That is, the sub controllers 310-0, 320-0, ... may supply the power supply unit such that two powers outputted through the two power output units are the same or different according to the type of the storage medium connected to the power supply unit. It can be said to control.

Specifically, when the HDD is connected to the power supply unit, the two powers having different voltages are controlled to be supplied to the HDD. When the two SSDs are connected to the power supply unit, the two power supplies having the same voltage are supplied to each of the SSDs. It can be seen as.

Meanwhile, in the above-described embodiments, it is assumed that one sub controller controls four power supplies, but the number of power supplies controlled by one sub controller may be implemented differently.

In addition, 5V and 12V, which are referred to as rated voltages in this embodiment, are merely examples for convenience of understanding and explanation. Even when the rated voltage of the storage medium is different, the technical idea of the present invention may be applied as it is.

In this embodiment, the upper limit voltage is assumed to be 120 (100 + 20)% of the rated voltage and the lower limit voltage is 80 (100-20)% of the rated voltage. However, this is just an example for convenience of description. The present invention is also applicable when other ratios are applied.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the specific embodiments described above, but the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

1 is a block diagram of an HDD voltage margin test apparatus according to an embodiment of the present invention;

2 is a view illustrating an example of a power supply unit;

3 is a view showing another example of a power supply unit;

4 is a view showing another example of a power supply unit;

5 is a flowchart provided to explain an HDD voltage margin test method according to another embodiment of the present invention;

6 is a block diagram of an SSD voltage margin test apparatus according to another embodiment of the present invention, and

7 is a block diagram of an HDD / SSD voltage margin test apparatus according to another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: main computer 200: switching unit

310, 320: test modules 310-0, 320-0: sub control unit

310-1 to 310-4, 320-1 to 320-4, 500: power supply

410-1 to 410-4, 420-1 to 420-4: HDD

540, 550: power control unit-1 560: power output unit

570: output monitoring unit 580: encoding unit

590: output measurement unit

Claims (10)

A power supply unit capable of supplying variable power to the connected storage medium; And The reliability of the storage medium is tested by controlling the power supply operation of the power supply unit so that the power supplied to the storage medium is variable, and writing data to the storage medium and reading data written to the storage medium. Storage medium voltage margin test apparatus comprising a. The method of claim 1, The control unit, 1) control the power supply to supply a level of power higher than the rated power to the storage medium, test the reliability of the storage medium, and 2) supply the power to a level lower than the rated power to the storage medium. The storage medium voltage margin test apparatus, characterized in that for controlling the supply and testing the reliability of the storage medium. The method of claim 1, The control unit, If the data read from the storage medium is determined to match the data recorded on the storage medium, the reliability of the storage medium is good at the power supplied to the storage medium in the process of writing and reading the storage medium. Storage medium voltage margin test apparatus, characterized in that determining. The method of claim 1, The storage medium voltage margin test apparatus, A plurality of power supply units; The control unit, Storage device voltage margin test apparatus, characterized in that for testing the reliability of each of the plurality of storage media connected to the plurality of power supply, while controlling the power supply operations of the plurality of power supply. The method of claim 4, wherein The storage medium voltage margin test apparatus, A plurality of control units for controlling power supply operations of the plurality of power supply units, And a computing module configured to control power supply control operations of the plurality of controllers, and collect test results from the plurality of controllers and provide the test results to the user, respectively. The method of claim 1, The power supply unit outputs two types of power through two output terminals, The control unit, According to the type of storage medium connected to the power supply, the storage medium voltage margin test apparatus, characterized in that for controlling the power supply so that the two power output through the two output terminals are the same or different. The method of claim 6, The control unit, If it is determined that a hard disk drive (HDD) is connected to the power supply, the power supply is controlled so that two powers output through the two output terminals are different from each other. If it is determined that at least one solid state disk (SSD) is connected to the power supply unit, the storage medium voltage margin test apparatus for controlling the power supply unit so that two powers outputted through the two output terminals are the same. . The method of claim 1, The power supply unit, Monitoring whether power is output to the storage medium and transferring a monitoring result to the controller; The control unit, When determining the reliability of the storage medium, the storage medium voltage margin test apparatus, characterized in that for referring to the monitoring result received from the power supply. The method of claim 1, The power supply unit, Measure a level of power output to the storage medium, and transmit a measurement result to the controller; The control unit, When determining the reliability of the storage medium, the storage medium voltage margin test apparatus, characterized in that for referring to the measurement result received from the power supply. The method of claim 1, The control unit, The storage medium voltage margin test apparatus of claim 1, wherein the reliability of the storage medium is tested by determining whether the storage medium operates normally even when the voltage of the power supplied to the storage medium deviates by a specific level from the rated voltage.

Images