KR20140104675A

KR20140104675A - Archive system

Info

Publication number: KR20140104675A
Application number: KR1020130018423A
Authority: KR
Inventors: 조만석
Original assignee: 주식회사 히타치엘지 데이터 스토리지 코리아
Priority date: 2013-02-21
Filing date: 2013-02-21
Publication date: 2014-08-29

Abstract

According to the present invention, an archive system includes: a fan module which emits heat generated by the system; a drive bay which includes an optical disk drive for recording data on an optical disk or reading out data recorded on the optical disk, and a backplane for connecting the optical disk drive; a picker robot which transfers the optical disk to the optical disk drive to record or read out data with respect to a cartridge or which transfers the optical disk, for which data recording/reading out is completed, from the optical disk drive to the cartridge; a single board computer which is connected to a server, which processes requests for data access and storage using the optical disk drive, and which orders the picker robot to select an optical disk in the cartridge and load the optical disk in the optical disk drive; and a power controller which controls a power mode of each component, based on a power state detected from each component and the current operation state of the archive system. Thus, the archive system can be divided largely into components mainly consuming power, three or more power modes are provided for the divided components, and power mode switching can be performed according to operational states, thereby improving the power consumption efficiency of the optical disk-based archive system and increasing the lifetime of the product.

Description

Archive system {Archive system}

The present invention relates to an archive system, and more particularly, to an archive system that divides an archive library system by function and applies a power management method for efficiently controlling power according to the operation state of a partitioned block.

As video signal processing technology and data transmission technology are developed and large display devices are developed, viewers can view high-quality contents and the need to store high-capacity contents is increasing.

In recent years, cloud services have been enabled to put data on remote servers and use data anywhere on the network, and the storage capacity that cloud services provide to individuals is also growing.

In this way, a portal providing cloud service, a broadcasting station providing a large amount of contents, a large server for storing and managing a large amount of data in a library, a government office, or a bank in which a large amount of documents must be archived and stored The need is increasing. In accordance with this necessity, an archive system that can store and retrieve a large amount of data reliably at a low cost and quickly is being launched.

Archiving system is a kind of database which maintains and maintains the relation between data and keeps the collection and data of digital information in the form of digital information. It digitizes information that may be degraded or dispersed over time, And so on. It is meaningful not to simply accumulate information, but to organize and accumulate information effectively in various ways.

Up until now, archival systems have been the mainstay of tapes as storage media. However, a tape-based archive system has the problem of high data stability but low search speed and large space. Hard disk-based archive systems are also emerging and are excellent in that they can be searched quickly, but data reliability is poor.

In recent years, an archive system using an optical disk as a storage medium has emerged. An optical disk-based archive system can search more quickly than a tape-based archive system and can store data more reliably than a hard disk-based archive system There is an advantage that the space occupied by the tape and the hard disk can be reduced.

However, there is no way to efficiently manage the power in an optical disc-based archive system, so that all the components constituting the archive system are always powered, the power consumption of the archive system is high, The durability of the system is deteriorated.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method for efficiently managing power of an optical disc based archive system.

According to an aspect of the present invention, there is provided an archive system comprising: a fan module including a plurality of fans for discharging heat generated in an archive system; A drive bay including a plurality of optical disc drives for writing data on an optical disc or for reading data recorded on the optical disc and a backplane for connecting the optical disc drive; A picker robot for transferring an optical disc to the optical disc drive for data recording / reading from / to a cartridge on which the optical disc is placed or for transferring the optical disc written / read from the optical disc drive to the cartridge; A single board computer connected to the server for handling requests for data access and storage using the optical disk drive and for instructing the picker robot to select a disk in the cartridge and load the disk in the optical disk drive; And a power controller for controlling a power mode of each component based on a power state detected from each component and a current operation state of the archive system.

In one embodiment, the power controller may provide control signals to each component such that each component has three or more power modes.

In one embodiment, the power controller can switch the power mode of the fan module based on the fan control signal and the fan PWM signal.

In one embodiment, the power controller is a combination of a fan control signal having a value of "FAN enable" and "FAN disable" and a fan PWM signal having values of "low RPM", "middle RPM" and "high RPM" The fan can be controlled to have four power modes including "Off", "Low", "Middle" and "High" with different operating speeds.

In one embodiment, the power controller can switch the power mode of the single board computer based on an SBC control signal and an internal interrupt.

In one embodiment, the power controller can be controlled to have five power modes, including "Off ", with a combination of SBC control signals having the enable and disable values and four types of internal interrupts .

In one embodiment, the power mode is a first mode in which a process is performed and the optical disk drive performs a data write / read operation, a second mode in which the processor is operating but the system is not operating and is ready for operation, A third mode in which the system status is maintained in memory and the port for receiving an interrupt is awake, and a fourth mode in which all power is turned off except for the logic for restart and the port for interrupt reception.

In one embodiment, the power controller can switch the power mode of the backplane based on a power switch signal and an SBC command for each optical disk drive.

In one embodiment, the power controller controls ON / OFF of the load switch for each optical disc drive through a power switch signal having the values of "enable" and "disable", and sets "idle" and "active" The first mode for reducing the power consumption and the second mode for performing the data write / read operation can be switched based on the SBC command having the SBC command.

In one embodiment, the power controller can switch the power mode of the robot picker based on a picker power signal and a picker power idle signal.

In one embodiment, the power controller controls on / off of a power source applied to the picker robot by controlling a load switch through a picker power signal having a value of "enable" and "disable" the first mode for reducing the power consumption based on the SBC command having the " active "value can be switched to the second mode for performing the transport operation of the optical disk.

Therefore, the power consumption efficiency of the optical disc-based archive system is improved, and the life of the product can be improved.

FIG. 1 illustrates an optical disk-based archive system to which the present invention is applied,
2 shows a structure of a picker robot for moving an optical disk to a cartridge and a drive in an archive system to which the present invention is applied,
3 shows an embodiment using a position sensor for controlling the position of a picker robot in an archive system to which the present invention is applied,
4 is a block diagram of a functional block of an archive system according to an embodiment of the present invention,
FIG. 5 is a flowchart illustrating a power state of a fan constituting an archive system according to an embodiment of the present invention,
FIG. 6 is a power state diagram and state description table of an SBC constituting an archive system according to an embodiment of the present invention,
FIG. 7 is a flowchart illustrating a power supply state of a backplane including an optical disc drive constituting an archive system according to an embodiment of the present invention,
8 illustrates a state in which the optical disc drive and the SBC are connected through the backplane,
9 is a flowchart illustrating a power state of a picker robot constituting an archive system according to an embodiment of the present invention.

Hereinafter, embodiments of a power management method of an archive system according to the present invention will be described in detail with reference to the accompanying drawings.

The optical disk-based archive system stores a plurality of optical disks in a cartridge separated into left and right, and a picker robot moving between the right and left cartridges removes the optical disk from the cartridge and loads the optical disk drive into the optical disk drive, The optical disk is unloaded, moved, inserted into the cartridge, and the optical disk drive writes data to or reads data from the loaded optical disk.

1 shows an optical disc based archive system to which the present invention is applied.

The optical disc-based archive system 100 mainly includes a drive bay 110 in which a plurality of optical disc drives (ODD) are installed, a picker robot 120 for moving the optical disc, A guide 140 for guiding the movement of the picker robot 120, and a fan module 150 having a plurality of cooling fans for emitting heat generated in the optical disk drive. .

The guide 140 is installed between the left and right drive bays 110 and the cartridge 130 so that the picker robot 120 moves the left and right drive bays 110 110 and the cartridge 130. In this case,

For example, three optical disc drives can be installed in the drive bay 110, so that up to six optical discs can be loaded in the left and right drive bays to perform data recording or data reading operations at the same time.

For example, 250 optical discs can be stored in the cartridge 130, so that up to 500 optical discs can be stored in the right and left cartridges installed on both sides of the picker robot 120, Can be separated.

2 shows a structure of a picker robot for moving an optical disc to a cartridge and a drive in an archive system to which the present invention is applied.

The picker robot 120 moves the picker robot 120 along the guide 140 and moves the picker robot 120 while fixing and moving the optical disk while moving the optical pick- A picker arm assembly 121, a kicker assembly 122 for extracting an optical disk from the cartridge 130, a picker base 122 having a shoulder shape for extending the kicker assembly 122 from the picker arm assembly 121, A position encoder 124 for detecting the position of the picker robot, a step motor 125 for driving the kicker assembly 122 and a photo interrupter 126 for detecting the position of the kicker assembly 122 ). &Lt; / RTI >

Two optical discs can be simultaneously inserted into the picker arm assembly 121. A sled motor for moving the picker robot 120 along the guide 140 and a pulled-in optical disc are inserted into the drive bay 110, And a plurality of solenoids for loading the plurality of solenoids.

The optical disk is extracted from the cartridge 130 by the rotational movement of the kicker assembly 122 and then moved to the picker arm assembly 121 and stopped. The picker robot 120 holding the optical disk moves to the guide The optical disk can be loaded into the drive bay 110 by a motor and a solenoid included in the picker arm assembly 121. [

The optical disk in the drive bay 110 is unloaded from the drive bay 110 and stops at the picker arm assembly 121. The picker robot 120 holding the optical disk is moved along the guide 140 After moving to the cartridge 130, the optical disc may be loaded into the cartridge 130 by a plurality of motors included in the picker arm assembly 121 and a plurality of solenoids.

3 illustrates an embodiment using a position sensor for controlling the position of a picker robot in an archive system to which the present invention is applied.

3, a plurality of holes are linearly formed on the left and right sides along the movement path of the picker robot 120. The fine holes Hole_F and Hole_F, And a coarse hole (Hole_C) of the same size are formed side by side in parallel. The fine holes are formed at narrow intervals in order to precisely detect the moving position of the picker robot, and the course holes are formed at wide intervals in order to detect the moving position of the picker robot approximately and quickly.

The picker robot 120 is provided with sensor units 1241 and 1242 in which a plurality of sensors including a light emitting unit for emitting light toward the hole and a light receiving unit for receiving light transmitted through the hole are disposed, Respectively. For example, two fine hole sensors including a light emitting portion and a light receiving portion are disposed in one sensor portion 1241 to detect the fine holes, and another sensor portion 1242 is provided with a light emitting portion And a light-receiving unit.

As the picker robot 120 moves, the picker robot 120 moves accurately to the position of a slot included in the cartridge 130 based on a signal output by the hall sensor, Can be inserted or extracted.

As described above, the optical disc-based archive system 100 records data on an optical disc by electrical and mechanical operations of a drive bay 110 in which a plurality of optical disc drives are installed and a picker robot 120 for transferring an optical disc Or reads data recorded on the optical disk.

However, since there is no specific scheme for efficiently managing power in the optical disc-based archive system 100, power is always supplied to all the components constituting the system, so that power consumption is high and each component always operates Durability could be lowered.

In the present invention, it is possible to improve the power consumption efficiency of the system by classifying the components of the archive system 100 into a predetermined number and designing and applying three or more power modes to the respective components.

The optical disc-based archive system 100 includes a drive bay 110 and a picker robot 120 involved in data recording and reading, a fan module 150 for heat dissipation of the system, and a processor, a memory, an operating system (OS) , A single board computer (SBC) that includes customized program code and hardware and directs or controls other hardware in the system consumes most of the power. In the archive system 100, the drive bay 110, the fan module 150, and the SBC are all installed on the left and right sides, and only one picker robot 120 is installed.

In the present invention, the archive system 100 is classified into the components of the single board computer, the drive bay 110, the fan module 150, and the picker robot 120, and three or more The power supply mode can be provided and the power supply can be managed while changing the power supply mode according to the operating conditions.

FIG. 4 illustrates a functional block for power management in an archive system according to an embodiment of the present invention.

The optical disc based archive system 100 according to the present invention is a functional block for power management and includes left and right fan modules 150a and 150b, left and right single board computers 160a and 160b, a backplane 111, The left and right drive bays 110a and 110b including the optical disc drive of the optical disc drive, the picker robot 120, and the power controller 170 for managing the power of each functional block.

The fan module 150, the backplane 111, the picker robot 120, and the single board computer 160 each include a power module for managing power, and the power controller 170 is connected to an external power source And a power sensing unit for sensing a power state of the power module and each functional block.

The power controller 170 confirms the current operation state of the archive system 100 from the single board computer 160 and also controls the fan module 150, the backplane 111, the picker robot 120, The control unit 160 may detect the power state of each functional block including the control unit 160 and provide a control signal to each functional block so as to be in the power mode corresponding to the current operation state and the power state of each block.

The fan module 150 discharges heat generated in the archive system 100. In the optical disc based archive system 100, the single board computer 160, a plurality of lights Most of the heat is generated in the backplane 111 driving the disk drive and the optical disk drive. Accordingly, the fan module 150 can be disposed at a lower portion of the drive bay 110 and the single board computer 160 biased to one side of the system, And installed in the computer 160 and the drive bay 110, respectively.

The power mode of the fan module 150 is changed by a fan control signal (FAN "enable") and a fan PWM (Pulse Width Modulation) signal (FAN PWM) By combination, it can operate in four power modes: Off, Low, Middle, and High. FIG. 5 is a flowchart illustrating a power state of a fan included in the archive system according to an embodiment of the present invention.

When the system is not used for a predetermined time (configurable), the "Off" mode corresponds to a state in which the power applied to the fan module 150 is cut off by using the fan control signal FAN enable ("disable" signal) do.

The low mode is a state in which the fan module 150 is turned on when the fan module 150 is turned on or when a fan corresponding to "enable" Enters when the control signal is applied, and enters the "middle" mode when the fan PWM signal is applied to "low RPM".

The "Middle" mode and the "High" mode correspond to the state in which the archive system 100 is operating, and the cooling degree varies depending on the number of optical disk drives or the operation speed Middle mode "when the fan PWM signal is applied to" middle RPM "and" High "mode when the fan PWM signal is applied to" high RPM ".

The single board computer (SBC) 160 plays a role of recording or reading data to be archived or already archived using an optical disk drive in connection with an archive server. That is, it communicates with the system server through Gigabit Ethernet to receive commands, control and data, interprets the information in the task of the archive system such as disk movement, communication with the drive, feedback to the user and interactive server, Controls the robot 120 and the optical disk drive, processes requests for data access and storage, and instructs the picker robot 120 to select an appropriate disk and load it into the appropriate drive

The power mode of the single board computer 160 is changed by the SBC control signal SBC_On and the internal interruption and the single board computer 160 is set to the "Off" power mode by the "disable" signal of the SBC control signal SBC_On After power is applied by the "enable" signal of the control signal (SBC_On), four types of internal interrupts are set to "S0", "S1", "S3", and "S5" You can enter.

FIG. 6 is a power state flowchart and a state description table of an SBC constituting an archive system according to an embodiment of the present invention.

The S0 power mode is a stand-by mode that corresponds to a mode in which an SBC control signal (SBC_On) corresponding to "enable" enters or enters an internal interrupt S0 in another mode. And a mode in which the disk drive performs an operation of controlling writing / reading of data.

The "S1" power mode corresponds to a mode in which the processor is operating in idle mode when the internal interrupt S1 occurs in the "S0" power mode, but the system is ready to operate without operating now .

The "S3" power mode is a suspend to RAM mode when the internal interrupt S3 occurs in the "S1" power mode corresponding to the idle mode. The non-critical circuits except the main circuit are turned off and the system status the system context is maintained in the DRAM and the interrupt port for receiving the interrupt is awake.

The "S5" power mode is a soft-off mode in which when the internal interrupt S5 occurs in the "S3" power mode corresponding to the stop mode, all power except the logic for restart is turned off and wakes up A full boot is required and the interrupt port for receiving the interrupt is awake.

When internal interrupt S0 occurs in "S1", "S3", "S5" power mode, it returns to "S0" power mode.

A plurality of optical disk drives included in the drive bay 110 perform an operation of writing data to or reading data from an optical disk serving as an archive medium. The socket in which the backplane 111 is connected to the optical disk drive And serves to connect the single board computer 160 and the optical disk drive.

Generally, the backplane 111 is an electronic circuit board including a circuit and a socket. In a network device, the interface module can be mounted on a socket of a backplane in a chassis type or modular type equipment, , It can be generally regarded as a part of the motherboard or the motherboard itself as a backplane.

The backplane 111 is installed in the right and left drive bays, respectively, and one backplane 111 is connected to the three optical disc drives. The backplane 111 can control the power mode (Off, Idle, Active) of each optical disk drive through the power switch (ODD power) and the SBC command (SBC command) for each optical disk drive.

7 is a flowchart illustrating a power state of a backplane including an optical disk drive constituting an archive system according to an embodiment of the present invention.

The "Off" power mode corresponds to a mode in which the power applied to the optical disk drive is disconnected by using a load switch when the archive system 100 is not used for a long time (configurable) So that the operation of the load switch can be controlled.

The "idle " power mode is a mode that allows the power to be entered when the initial power is supplied to the optical disk drive or when the optical disk drive is not used for a short time (configurable) It can enter by SBC command.

The "Active" power mode is a mode in which the optical disc drive reads data recorded on the optical disc or records data on the optical disc, and can enter by the SBC command corresponding to "active ".

FIG. 8 shows a state in which the optical disk drive and the SBC are connected through the backplane, and it can be confirmed that the load switch is controlled by the power signal (ODD1_power, ODD2_power) for each ODD.

The picker robot 120 transfers an optical disc to or from a optical disc drive for data recording / reading from the cartridge 130 on which the optical disc as an archive storage medium is placed, 130).

The power mode of the picker robot 120 may be changed by a picker power and a picker power idle and the power mode of the picker robot 120 may be changed to "Off", "Idle", " There are three "active". 9 is a flowchart illustrating a power state of a picker robot constituting an archive system according to an embodiment of the present invention.

The "Off" power mode is a mode in which the power applied to the picker robot 120 is disconnected by using a load switch when the archive system 100 is not used for a long time (configurable) .

The "Idle" power mode is a mode in which power consumption can be reduced when the initial power is applied to the picker robot 120 or when it is not used for a short time (configurable).

The "Active" power mode is a mode in which the picker robot 120 moves when the Off signal is applied to the picker power idle signal.

As described above, the archive system is largely divided into power consuming components, and more than three power modes can be provided for each component, and the power mode can be switched according to the operation state. Thus, The power consumption efficiency of the system can be improved and the lifetime of the product can be improved.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. Addition or the like.

100: Archive system 110: Drive bay
111: Backplane 120: Picker robot
121: Picker arm assembly 122: Kicker assembly
123: Picker base 124: Position encoder
125: step motor 126: photo interrupter
130: Cartridge 140: Guide
150: fan module 160: single board computer
170: Power controller

Claims

A fan module including a plurality of fans for releasing heat generated in the archive system;
A drive bay including a plurality of optical disc drives for writing data on an optical disc or for reading data recorded on the optical disc and a backplane for connecting the optical disc drive;
A picker robot for transferring an optical disc to the optical disc drive for data recording / reading from / to a cartridge on which the optical disc is placed or for transferring the optical disc written / read from the optical disc drive to the cartridge;
A single board computer connected to the server for handling requests for data access and storage using the optical disk drive and for instructing the picker robot to select a disk in the cartridge and load the disk in the optical disk drive; And
And a power controller for controlling a power mode of each component based on a power state detected from each component and a current operation state of the archive system.

The method according to claim 1,
Wherein the power controller provides control signals to each component such that each component has three or more power modes.

3. The method of claim 2,
Wherein the power controller switches the power mode of the fan module based on a fan control signal and a fan PWM signal.

The method of claim 3,
The power controller is a combination of a fan control signal having values of "FAN enable" and "FAN disable" and a fan PWM signal having values of "low RPM", "middle RPM" and "high RPM" Wherein said control means controls said power source to have four power modes including "Off", "Low", "Middle" and "High".

3. The method of claim 2,
Wherein the power controller switches the power mode of the single board computer based on an SBC control signal and an internal interrupt.

6. The method of claim 5,
Wherein the power controller controls the SBC control signal to have five power modes including "Off " in combination with an SBC control signal having an enable value and a disable value and four types of internal interrupts.

The method according to claim 6,
Wherein the power mode is a first mode in which a process is executed and the optical disk drive performs a data write / read operation, a second mode in which the processor is operating but the system is not operating and ready for operation, And a fourth mode in which all power is turned off except for a third mode in which a port for receiving an interrupt is awake and a port for receiving an interrupt and a logic for restarting are turned off.

3. The method of claim 2,
Wherein the power controller switches the power mode of the backplane based on a power switch signal and an SBC command for each optical disk drive.

9. The method of claim 8,
The power controller controls ON / OFF of the load switch for each optical disk drive through a power switch signal having a value of "enable" and "disable", and based on the SBC command having "idle" To the first mode for reducing power consumption and the second mode for performing a data recording / reading operation.

3. The method of claim 2,
Wherein the power controller switches the power mode of the robot picker based on a picker power signal and a picker power idle signal.

11. The method of claim 10,
The power controller controls on / off of a power source applied to the picker robot by controlling a load switch through a picker power signal having a value of "enable" and "disable" The first mode for reducing the power consumption based on the SBC command and the second mode for performing the transport operation of the optical disk.