JP5743067B2 - Disk array device and control method thereof - Google Patents

Description

  The present invention relates to a disk array device and a control method thereof.

  2. Description of the Related Art Conventionally, a disk array device sequentially starts up HDDs so that the startup current of the HDD does not exceed the power supply capacity of one power supply device when the HDD (Hard Disk Drive) is started up. Also, the disk array device can have two or more power supply devices in order to increase the power supply capacity.

  As a disk array device having two power supply devices, for example, a power supply control device of Patent Document 1 is disclosed. The power supply control device disclosed in Patent Literature 1 adds the supply currents from the two power supply devices, and controls to supply power to each hard disk according to the individual state of each hard disk.

JP 2001-186655 A

  However, there are cases where two power supply units are mounted for redundancy. In this case, in the disk array device in which system down is not allowed, one power supply device is used as a spare, and one power supply device is used to operate the disk array device.

  Therefore, even when two power supply units are installed, the HDDs are sequentially activated so that the power supply capacity of one power supply unit is not exceeded, and it takes time to start up the HDDs. is there.

  Specifically, taking a 3.5 inch HDD as an example, the HDD passes a large inrush current (also called a startup current) of 3 [A] to rotate the HDD medium (disk) at the time of startup. There is a need. However, the HDD operates with a small power of 0.8 [A] in normal operation when the disk rotation reaches a stable speed.

  On the other hand, if the power supply capacity is designed in accordance with the startup current 3 [A] at the startup of the HDD, the power supply capacity becomes an expensive power supply device with large power. For this reason, the power capacity is designed in accordance with the normal operation of 0.8 [A]. For this reason, when starting up the disk array device, it is necessary to start up the HDDs sequentially to reduce power.

  As an example, when starting up a disk array device equipped with 12 3.5 [inch] HDDs, the disk array device starts up three HDDs at the same time. This activation time is 10 seconds. The disk array device does not supply power to the other nine HDDs while simultaneously starting three HDDs. When the start of the first three HDDs is completed, the power of the HDD becomes 0.8 [A] of normal operation, and at this stage, the disk array device starts the next three HDDs. At this time, the disk array The device does not supply power to the remaining six HDDs.

  By repeating this method, the time required for starting all the 12 HDDs is 40 seconds because the startup time of 10 seconds is four times. As described above, the disk array device has a problem that it takes a long time to start up because it must start up sequentially after waiting for completion of startup of the HDD regardless of the state of the power supply device or HDD.

  The present invention has been made in consideration of the above points, and proposes a disk array device and a control method thereof that can improve the user-friendliness while maintaining reliability.

  In order to solve such a problem, one aspect of a disk array device of the present invention includes a plurality of devices for storing data to be written received from a server device, and a first power source for supplying power to the plurality of devices. A second power source configured redundantly with the first power source and supplying power to the plurality of devices; and when the first power source and the second power source are operating normally, On the other hand, when one of the first power supply and the second power supply does not operate normally while the plurality of devices are activated all at once, the plurality of devices all at once. A power control unit that interrupts activation and sequentially activates the plurality of devices.

  According to one aspect of the disk array device control method of the present invention, a plurality of devices for storing data to be written received from a server device, a first power source for supplying power to the plurality of devices, A control method for a disk array device, comprising: a second power supply configured redundantly with a first power supply and supplying power to the plurality of devices; and a power supply control unit that controls the first power supply and the second power supply. A first step of simultaneously starting the plurality of devices when the first power source and the second power source are operating normally; and If any one of the first power supply and the second power supply does not operate normally while the devices are activated all at once, the simultaneous activation of the plurality of devices is interrupted, Characterized in that it comprises a second step of sequentially starts the number of devices, the.

  Therefore, one aspect of the disk array apparatus and the disk array apparatus control method according to the present invention can shorten the startup time of a plurality of devices according to the states of the first power supply and the second power supply.

  ADVANTAGE OF THE INVENTION According to this invention, the disk array apparatus which can improve a user's convenience while maintaining reliability, and its control method are realizable.

It is a figure which shows an example of a structure of a disk array apparatus. It is a flowchart which shows an example of the power supply control processing procedure at the time of apparatus starting. It is a conceptual diagram with which it uses for description of the Example of the writing process of data.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited thereby.

(Constitution)
FIG. 1 is a diagram showing an example of the configuration of the disk array device 1 of the present embodiment. The storage system 1 includes, for example, a first power supply 11, a second power supply 12, a first controller (first Cont) 21, a second controller (second Cont) 22, a first power on circuit 27 to a fourth power on. The circuit 30 and 12 HDDs 31 to 42 are provided.

  The first power supply 11 and the second power supply 12 supply power to the entire disk array device 1. The first power supply 11 and the second power supply 12 are redundantly configured.

  The first controller 21 is connected to the first power supply 11 and the second power supply 12. The second controller 22 is connected to the first power supply 11 and the second power supply 12. The first controller 21 and the second controller 22 control the entire disk array device 1. The first controller 21 and the second controller 22 are redundantly configured.

  The first power-on circuit 27 to the fourth power-on circuit 30 are connected to the first controller 21 and the second controller 22, respectively. The first power-on circuit 27 to the fourth power-on circuit 30 supply power to the HDDs 31 to 42.

  The HDD 31 to HDD 33 are connected to the first power-on circuit 27. The HDD 34 to HDD 36 are connected to the second power-on circuit 28. The HDDs 37 to 39 are connected to the third power-on circuit 29. The HDD 40 to HDD 42 are connected to the fourth power-on circuit 30. The HDD 31 to HDD 42 store, for example, data received from a server device (not shown).

  When the power supply is turned on, the first power supply 11 outputs the power of the first power supply output 13 to the first power-on circuit 27 to the fourth power-on circuit 30. Further, when the power supply is turned on, the second power supply 12 outputs the power of the second power supply output 14 to the first power-on circuit 27 to the fourth power-on circuit 30. The first power supply 11 and the second power supply 12 are, for example, 12 [V].

  When the power supply is turned on, the first power supply 11 transmits a first power supply state monitoring signal 15 indicating whether the power supply has started up normally to the first controller 21 and the second controller 22. Further, when the power supply is turned on, the second power supply 12 transmits a second power supply state monitoring signal 16 indicating that the power supply has started up normally to the first controller 21 and the second controller 22. Thereby, the first controller 21 and the second controller 22 monitor the states of the first power supply 11 and the second power supply 12.

  While the first controller 21 receives the first power supply state monitoring signal 15 and the second power supply state monitoring signal 16, the first power output 13 and the second power supply circuit 30 are connected to the first power on circuit 27 to the fourth power on circuit 30. A first circuit on signal 23 to a fourth circuit on signal 26 for supplying power of the power output 14 are transmitted. The second controller 22 receives the first circuit on signal 23 from the first power-on circuit 27 to the fourth power-on circuit 30 while receiving the first power state monitoring signal 15 and the second power state monitoring signal 16. -The fourth circuit on signal 26 is transmitted.

  When the first power-on circuit 27 to the fourth power-on circuit 30 receive the first circuit-on signal 23 to the fourth circuit-on signal 26, the powers of the first power output 13 and the second power output 14 are transferred to the HDDs 31 to 42. Supply. The HDDs 31 to 42 start to be activated when the power of the first power output 13 and the second power output 14 is supplied. When the startup is completed, the HDD 31 to HDD 42 transmit an HDD status monitoring signal 43 indicating whether the HDD has started up normally to the first controller 21 and the second controller 22. Thereby, the first controller 21 and the second controller 22 monitor the states of the HDDs 31 to 42.

(Procedure for power supply control at startup)
Next, a power control process procedure at the time of starting the device in the disk array device 1 according to an example of the present embodiment will be described. In this case, the HDDs 31 to 42 are 12 3.5 [inch] HDDs. Moreover, the 1st power supply 11 and the 2nd power supply 12 supply 12 [V] electric power.

  First, the 12 [V] power of the first power output 13 and the second power output 14 is the first controller 21 and the second controller 22 when the first power supply 11 and the second power supply 12 which are redundant power supplies are turned on. , And the first power-on circuit 27 to the fourth power-on circuit 30.

  Note that the 12 [V] power of the first power output 13 and the second power output 14 is calculated by the first power-on circuit 27 to the fourth power-on circuit 30 from the first controller 21 and the second controller 22 to the first circuit-on signal. 23 to the fourth circuit on signal 26 are received and then supplied to the HDDs 31 to 42. Accordingly, at this time, 12 [V] power of the first power output 13 and the second power output 14 is not supplied to the HDDs 31 to 42.

  When 12 [V] power of the first power supply output 13 and the second power supply output 14 is supplied, the first controller 21 executes the power supply control processing procedure RT1 shown in FIG. SP1).

  Subsequently, the first controller 21 checks whether or not both of the first power supply 11 and the second power supply 12 are normal (step SP2). Specifically, the first controller 21 determines whether the first power supply 11 and the second power supply 12 receive the first power supply state monitoring signal 15 and the second power supply state monitoring signal 16 from the first power supply 11 and the second power supply 12. It is checked whether or not the two power supplies 12 are normal.

  In the first controller 21, when at least one of the first power supply 11 and the second power supply 12 is not normal (step SP2: NO), the first power supply 11 and / or the second power supply 12 is abnormal. The maintenance staff is notified (step SP3), and the maintenance staff is prompted to replace the first power supply 11 and / or the second power supply 12. Subsequently, the first controller 21 waits in the standby mode for the first power supply 11 and / or the second power supply 12 to be replaced (step SP4). Eventually, when the first power supply 11 and / or the second power supply 12 is replaced (step SP4: YES), the first controller 21 returns to step SP2.

  On the other hand, when both the first power supply 11 and the second power supply 12 are normal (step SP2: YES), the first controller 21 starts starting all the HDDs 31 to 42 (step SP5). ).

  Specifically, when both the first power supply 11 and the second power supply 12 are normal, the first controller 21 starts up the HDD 31 to HDD 42 having a total of two power supply capacities at the same time. Also, it is determined that the power is within the allowable range, the first circuit on signal 23 is transmitted to the first power on circuit 27, the second circuit on signal 24 is transmitted to the second power on circuit 28, and the third circuit The ON signal 25 is transmitted to the third power-on circuit 29, and the fourth circuit-ON signal 26 is transmitted to the fourth power-on circuit 30. When the first power-on circuit 27 to the fourth power-on circuit 30 receive the first circuit-on signal 23 to the fourth circuit-on signal 26, 12 [V] of the first power output 13 and the second power output 14. Power is supplied to the HDDs 31 to 42 all at once. As a result, the HDDs 31 to 42 are activated all at once, and the activation is completed in about 10 seconds, for example. In this case, it takes about 10 seconds for all of the twelve HDDs 31 to 42 to complete activation.

  Subsequently, the first controller 21 checks whether or not both of the first power supply 11 and the second power supply 12 are normal (step SP6). Specifically, the first controller 21 continuously monitors the reception status of the first power state monitoring signal 15 and the second power state monitoring signal 16 by polling even while the HDDs 31 to 42 are activated.

  If at least one of the first power supply 11 and the second power supply 12 is not normal (step SP6: NO), the first controller 21 interrupts the activation of all the HDDs 31 to 42 (step SP7). Subsequently, the first controller 21 sequentially activates the HDDs 31 to 42 (step SP8), and thereafter ends the power control processing procedure RT1 shown in FIG. 2 (step SP10).

  Specifically, the first controller 21 first transmits only the first circuit on signal 23 to the first power on circuit 27. When the first power-on circuit 27 receives the first circuit-on signal 23, the first power-on circuit 27 supplies 12 [V] power of the first power supply output 13 and the second power supply output 14 to the HDDs 31 to 33, and activates the HDDs 31 to 33. . Next, the first controller 21 transmits only the second circuit-on signal 24 to the second power-on circuit 28 after about 10 seconds, which is the time required for starting up the HDDs 31 to 33. When the second power-on circuit 28 receives the second circuit-on signal 24, the second power-on circuit 28 supplies 12 [V] power of the first power supply output 13 and the second power supply output 14 to the HDDs 34 to 36 and activates the HDDs 34 to 36. .

  Next, the first controller 21 sequentially transmits the third circuit on signal 25 to the third power on circuit 29 and the fourth circuit on signal 26 to the fourth power on circuit 30 in the same manner as described above. To do. And the 3rd power-on circuit 29 and the 4th power-on circuit 30 start HDD37-HDD39 sequentially, and start HDD40-HDD42 similarly to the above-mentioned case. In this case, the time required for completing the activation of all the 12 HDDs 31 to 42 is approximately 40 seconds since the activation time of approximately 10 seconds is four times.

  On the other hand, when both the first power supply 11 and the second power supply 12 are normal (step SP6: YES), the first controller 21 determines whether or not all the HDDs 31 to 42 have been activated. Is checked (step SP9). If the activation of all the HDDs 31 to 42 is not completed (step SP9: NO), the first controller 21 returns to step SP6, and then repeats the processes of steps SP6 to SP9. On the other hand, when all the HDDs 31 to 42 are activated (step SP9: YES), the first controller 21 thereafter ends the power supply control processing procedure RT1 shown in FIG. 2 (step SP10).

  Since the second controller 22 performs the same control as the first controller 21, the description of the second controller 22 is omitted.

  FIG. 3 illustrates a change in the current value of the power supply control process at the time of starting the device in the disk array device 1 of one example of the present embodiment. Here, the HDDs 31 to 42 are twelve 3.5 [inch] HDDs. Moreover, the 1st power supply 11 and the 2nd power supply 12 supply 12 [V] electric power. The rated current of the first power supply 11 and the second power supply 12 is 40 [A] for one unit and 80 [A] for the total of the two units. In addition, the startup current of one HDD is 3 [A], the rated current during normal operation is 0.8 [A], and the total rated current of devices other than the HDD is 23.8 [A]. To do.

  In this case, when the maximum value of the startup current of the disk array device 1 when 12 HDDs are mounted is Imax [A], Imax is calculated as follows.

(Equation 1)
Imax [A] = 23.8 [A] + (3 [A] × 12 [units]) = 59.8 [A]

  Therefore, when the first power supply 11 and the second power supply 12 are normal, Imax is within 80 [A] of the total value of the two power supplies, and the disk array device 1 can simultaneously start HDDs. (FIG. 3E).

  On the other hand, when one power supply has failed and it is necessary to start up with only one power supply, Imax exceeds 40 [A], which is the rated current of one power supply. 1 has to start HDD sequentially.

  In this case, when the fourth activation power that requires the maximum activation power among the four sequential activations is I4 [A], I4 is calculated as follows.

(Equation 2)
I4 [A] = 23.8 [A] + (0.8 [A] × 9 [units]) + (3 [A] × 3 [units]) = 40 [A]

  Therefore, even if one of the first power supply 11 and the second power supply 12 is out of order, I4 is 40 [A], which is the rated current of one power supply, so the disk array device 1 has one power supply. However, if it is sequentially activated, the HDD can be started up (FIGS. 3A to 3D).

(Operation and effect)
In this manner, in the disk array device 1 of the present embodiment, the first controller 21 starts starting all the HDDs 31 to 42 when both the first power supply 11 and the second power supply 12 are normal. On the other hand, when at least one of the first power supply 11 and the second power supply 12 is not normal, the activation of all the HDDs 31 to 42 is interrupted and the HDDs 31 to 42 are sequentially activated.

  Therefore, the disk array device 1 according to the present embodiment can shorten the startup time of the HDDs 31 to 42 according to the states of the first power supply 11 and the second power supply 12.

  In the present embodiment, the case where the disk array device 1 includes 12 3.5 [inch] HDDs has been described. However, the present invention is not limited to this. For example, the disk array device 1 includes 24 disk array devices. 2.5 [inch] HDD can also be installed. In this case, the startup time of 2.5 [inch] HDDs is about 10 seconds, and when three units are started up sequentially, the time taken to complete startup of all 24 2.5 [inch] HDDs is , Approximately 80 seconds. However, the disk array device 1 according to the present embodiment can start 24 2.5 [inch] HDDs in about 10 seconds by simultaneously starting 24 2.5 [inch] HDDs. It is possible to significantly reduce the time required for all 24 HDDs of 2.5 [inch] to complete startup.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1) A plurality of devices for storing data to be written received from a server device, a first power supply for supplying power to the plurality of devices, and the first power supply in a redundant configuration, the plurality of devices And when the first power supply and the second power supply are operating normally, the plurality of devices are activated all at once, while the plurality of devices are activated all at once. A power supply that interrupts simultaneous activation of the plurality of devices and sequentially activates the plurality of devices when one of the first power supply and the second power supply does not operate normally And a control unit.

(Supplementary Note 2) When the first power supply is operating normally, the first power supply state monitoring signal is transmitted to the power supply control unit, and when the second power supply is operating normally, the first power supply is monitored. Two power supply state monitoring signals are transmitted to the power supply control unit, and the power supply control unit receives the first power supply state and the second power supply state monitoring signal while receiving the first power supply state monitoring signal and the second power supply state monitoring signal. 2. The disk array device according to appendix 1, wherein it is determined that the power supply is operating normally.

(Supplementary note 3) A plurality of devices for storing data to be written received from the server device, a first power supply for supplying power to the plurality of devices, the first power supply being redundantly configured, and the plurality of devices A disk array apparatus control method comprising: a second power source that supplies power to the disk; and a power source control unit that controls the first power source and the second power source, wherein the power source control unit includes the first power source and the power source control unit. A first step of simultaneously starting the plurality of devices when the second power supply is operating normally; and while the power supply control unit is simultaneously starting the plurality of devices, A second step of interrupting simultaneous activation of the plurality of devices and sequentially starting the plurality of devices when one of the first power supply and the second power supply is not normally operated; The control method for a disk array apparatus comprising: a.

DESCRIPTION OF SYMBOLS 1 ... Disk array apparatus, 11 ... 1st power supply, 12 ... 2nd power supply, 13 ... 1st power supply output, 14 ... 2nd power supply output, 15 ... 1st power supply state monitoring signal, 16 ... Second power supply state monitoring signal, 21... First controller, 22... Second controller, 23... First circuit on signal, 24... Second circuit on signal, 25. ... 4th circuit on signal, 27 ... 1st power on circuit, 28 ... 2nd power on circuit, 29 ... 3rd power on circuit, 30 ... 4th power on circuit, 31-42 ... HDD, 43 …… HDD status monitoring signal

Claims (3)

A plurality of devices for storing data,
A first power source for supplying power to the plurality of devices;
A second power supply configured redundantly with the first power supply and supplying power to the plurality of devices;
Before starting the plurality of devices, determining whether the first power supply and the second power supply are operating normally, and when the first power supply and the second power supply are operating normally, Determining whether or not the first power supply and the second power supply are operating normally while simultaneously starting the plurality of devices and further starting the plurality of devices simultaneously; And a power supply control unit that interrupts simultaneous activation of the plurality of devices and sequentially activates the plurality of devices when one of the second power supplies stops operating normally,
A disk array device comprising: The first power source is
When operating normally, the first power supply state monitoring signal is transmitted to the power supply control unit,
The second power source is
When operating normally, send a second power status monitoring signal to the power control unit,
The power control unit
The first power source and the second power source are determined to be operating normally while receiving the first power source state monitoring signal and the second power source state monitoring signal. The disk array device described. A plurality of devices for storing data,
A first power source for supplying power to the plurality of devices;
A second power supply configured redundantly with the first power supply and supplying power to the plurality of devices;
A power supply control unit for controlling the first power supply and the second power supply;
A disk array device control method comprising:
The power supply control unit determines whether the first power supply and the second power supply are operating normally before starting the plurality of devices, and the first power supply and the second power supply operate normally. A first step of simultaneously activating the plurality of devices,
The power supply control unit determines whether the first power supply and the second power supply are operating normally while simultaneously starting the plurality of devices, and the first power supply and the second power supply are determined. A second step of interrupting simultaneous activation of the plurality of devices and sequentially starting the plurality of devices when any one of the power sources does not normally operate;
A method for controlling a disk array device, comprising:

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