JPH09258917A - Optical disk library device - Google Patents

Abstract

(57) [Summary] (Correction) [PROBLEMS] When a failure occurs in a data recording / reproducing device, a library control unit automatically replaces a spare device and automatically recovers without involvement of a host device. SOLUTION: An optical disk library apparatus is an S with a data recording / reproducing apparatus 2 and a host apparatus 61 of a spare data recording / reproducing apparatus 64 mounted by a library controller 16.
When a plurality of spare data recording / reproducing devices 6 having a function of switching the ID on the CSI interface 62 and having no ID on the SCSI interface 62 are connected, and a failure occurs in the data recording / reproducing device 2 having the ID. In addition, without the involvement of the host device 61, the library control unit 16 eliminates the ID on the SCSI interface 62 of the data recording / reproducing device 2 in which the failure has occurred, and instead the spare data recording / reproducing device 6 having no ID records the failed data. It has a function of giving the ID of the reproducing apparatus 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data storage device which handles a plurality of data storage media such as a floppy disk, an optical disk, a CD-ROM and the like.

[0002]

2. Description of the Related Art An optical disk library device is equipped with a plurality of data recording / reproducing devices, but when one of the data recording / reproducing devices fails, it can be recovered without the involvement of a host device. There wasn't. Therefore, if the host device does not have a process for recovering from the above-mentioned failure, and even if only one data recording / reproducing device is installed, the optical disk library device becomes unusable.

Further, conventionally, there has been a device in which a special controller is connected between the host device and this controller so that the host device operates without being aware of the ID on the interface. In this device, as described above, since the host device is not aware of the ID of the data recording / reproducing device, the data recording / reproducing device to be used is switched by the controller so that the optical disk library device becomes unusable due to the failure of the data recording / reproducing device. It can be avoided. But such a device
System connectivity was poor because a special interface was used for the host interface. Further, there is a problem that the system price becomes high because the controller has to be added.

[0004]

When a failure occurs in the data recording / reproducing apparatus, the library controller automatically switches the failed data recording / reproducing apparatus without involvement of the host device, thereby making the data recording / reproducing apparatus unusable. (EN) Provided is an optical disk library device which can be used with a SCSI interface while making it harder to operate and reducing the influence of the operation time of the medium transport mechanism section on the access time.

[0005]

The optical disk library of the present invention has a function of switching the ID on the SCSI interface with the host device of the data recording / reproducing device mounted by the library control unit, and further the ID on the SCSI interface. A plurality of data recording / reproducing apparatuses having no ID are connected, and when a failure occurs in the data recording / reproducing apparatus having an ID, the library control unit automatically fails without involvement of the host device. SC
By having the function of giving the ID of the data recording / reproducing apparatus having the failure to the data recording / reproducing apparatus having no ID instead of eliminating the ID on the SI interface, the data recording / reproducing apparatus having the failure is automatically switched. You can

Further, when a command for transporting a medium is successively issued from the host device to the data recording / reproducing device having the same ID, after the first command is executed, the medium designated by the second command is transferred to another medium. After the data recording / reproducing apparatus which is not in use or the data recording / reproducing apparatus having no ID is conveyed, and the conveyance command to the medium other than the data recording / reproducing apparatus is issued to the medium conveyed by the first command. , The second command execution time can be shortened by changing the ID of the data recording / reproducing apparatus that has carried the medium designated by the second command to the ID designated by the host device.

By the above means, even when a failure occurs in the data recording / reproducing apparatus, it is possible to realize an optical disk library apparatus which is not easily disabled and which can be accessed at high speed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION First, an embodiment of an apparatus incorporating the present invention will be described. FIG. 1 is a schematic structural diagram of the inside of an optical disk library device. The optical disk library device includes a medium storage 1 for storing an optical disk cartridge 10, a data recording / reproducing device 2 for recording / reproducing data on / from an optical disk, an optical disk cartridge 10 loaded into the optical disk library device from the outside of the optical disk library device, or an optical disk library. A medium loading / unloading mechanism 12 for ejecting the optical disk cartridge 10 from the inside of the apparatus to the outside of the optical disk library apparatus, and an optical disk cartridge 10 is taken out from the medium storage 1, the data recording / reproducing apparatus 2 or the medium loading / unloading mechanism 12.
A holder (A) 3 and a holder (B) 4, a holder (A) 3, a holder (B) 4, and a host device which can be conveyed to the medium storage 1, the data recording / reproducing device 2, or the medium loading / unloading mechanism 12. Library control unit 1 for controlling I / F with
6 and a power source 11 for supplying electric power to the power source 6 and the like.

Hereinafter, the medium storage 1, the data recording / reproducing device 2, the medium loading / unloading mechanism 12, the holders (A) 3, and the holder (B) 4 are collectively referred to as a cell.

The medium storage 1, the data recording / reproducing device 2, and the medium loading / unloading mechanism 12 are arranged vertically symmetrically. This is for optimizing the control of the holder (A) 3 and the holder (B), which will be described later, and for improving the workability of mounting and exchanging the data recording / reproducing apparatus 2. The improvement of the workability of mounting and exchanging the data recording / reproducing device 2 means that the worker can work comfortably while standing.

Next, the mechanism of the holder will be described with reference to FIG.

The operation of the holder includes an operation of inserting the optical disk cartridge 10 into or out of the cell (hereinafter referred to as a feeding operation), an operation of reversing the optical disk cartridge 10 in the holder, an operation of moving left and right, and an up and down operation. There is an action to move to.

The drive source for the feed operation is the feed motor 26. This driving force is applied to the lead screw 2 by the gear train.
3, the linear motion in the feed operation direction is converted by the lead screw 23, and the medium holding mechanism 21 is operated. The reverse rotation is also driven by the feed motor 26.

The drive source for the lateral movement operation is the lateral movement motor 27. This driving force is transmitted to the left-right moving synchro belt 25 by the gear train and the pulleys, converted into a linear movement in the left-right moving direction, and moved left and right.

The drive source for vertical movement is the elevator motor 5
It is. It is transmitted to the synchro belt 8 by a pulley attached to the rotary shaft of the elevator motor and converted into a linear motion in the vertical movement direction, and the holder is vertically moved. In the elevator system, in order to cancel the weight of the holder, a counter weight 14 (FIG. 1) having substantially the same weight as the holder is connected to the holder by a wire.

An encoder for detecting the number of rotations and the direction of rotation is attached to each of the motors, and the library controller 16 controls each motor by detecting the signal.

Next, the general operation of the holder (A) 3 and the holder (B) 4 will be described.

There are the following two types of control methods for the holder (A) 3 and the holder (B) 4.

In the first method, only one of the holder (A) 3 and the holder (B) 4 is operated, and the other one is retracted out of the operating range of the operating holder, This is a method of operating in place of the operating holder when the operating holder meets the following conditions. This condition is (1) When an abnormality is detected in the operating holder. (2) When the number of retries for the operating holder exceeds the set number. (3) When the number of times the holder is operating exceeds the set number of times. It is.

The condition (3) is intended to make the number of operations of the holder in operation and the retracted holder uniform.

According to the first method, when the normally operating holder becomes abnormal or is in the process of becoming abnormal, the holder is evacuated, the use is stopped, and the holder is evacuated. By using and to continue the subsequent processing, it is possible to improve redundancy and ensure high reliability.

In the second method, the holder (A) 3 and the upper half of the apparatus are one optical disk library apparatus, and the holder (B) 4 and the lower half of the apparatus are one optical disk library apparatus, which are pseudo upper layers. This is a method for making the device recognize.

In the case of the second method in the case where the device is normal and does not satisfy the above condition, the medium received next while the medium transport command is being executed from the upper device to the holder (A) 3 and the upper half of the device. It becomes possible to execute the transfer instruction in the holder (B) 4 and the lower half of the apparatus, and the access time can be shortened to a maximum of 1/2 as compared with the first method.

When the holder on one side fails in the second method, the failed holder can be retracted and all the upper and lower cells can be accessed only by the normal holder, so that the device down can be avoided. (The execution speed becomes the same level as the first method.) Next, the state of the holder retracted by the first method will be described. The holder (A) 3 is balanced by the counterweight 14 as described above, but the holder (A) 3 is lighter and the holder (B) 4 is set heavier than the counterweight 14. is there. Therefore, when vibration is applied to the device with the holder free, the holder (A) 3
Is pressed to the upper side which is the retracted position of the holder (A) 3, and the holder (B) 4 is pressed to the lower side which is the retracted position of the holder (B) 4. As a result, in the retracted state, the servo of the elevator motor 5 is turned off and the fixing member is not used and the elevator motor 5 is in a free state.

Next, an embodiment of the dustproof structure and the cooling method of the library device of the present invention will be described with reference to FIGS. 3, 4, 5, 6 and 7. The internal structure of the entire library device and the cooling air flow path are shown in FIGS. 3, 4, 5, and 6.
Further, FIG. 7 shows the flow paths of dustproof and cooling air of the data recording / reproducing apparatus 2.

In the optical disk library device, the device power supply 11, the library controller 16, and the data recording / reproducing device 2 are the parts that require cooling in particular. On the other hand, in the case of an optical disc that requires cooling, dust adheres to the inside of the recording medium and the recording / reproducing apparatus 2 and causes an error in recording / reproducing. Therefore, the recording medium (the cartridge 1 containing the recording medium 1
0) and the inside 47 of the data recording / reproducing apparatus, it is necessary to have a dustproof structure in which the outside dirty air does not enter into the above two places so that dust does not adhere to the inside 47. Therefore, in this embodiment, the cartridge storage 1 and the transport mechanism 4 are hermetically sealed by the partition plate 17 and the external cover so that the dirty air from the outside does not enter.

FIG. 7 shows a dustproof and cooling method for the portion of the data recording / reproducing apparatus 2. The data recording / reproducing apparatus 2 has an opening for a cartridge insertion opening on the side of the storage box 1, but a partition plate 17
On the rear side, the lower side is the substrate 45 of the apparatus, the side and upper sides are the covers 46, and the rear side is the parts of the apparatus and has an enclosure structure. The parts are connected to each other via a packing, so that the external dust does not enter the inside of the data recording / reproducing apparatus 2 and the cartridge storage 2 side. Although it has a dustproof structure, the cooling air is sufficiently applied to the substrate 45 of the data recording / reproducing apparatus 2 which requires cooling. Although there is no large heat generating portion inside the closed structure, the cooling air also flows around the data recording / reproducing apparatus, so that the inside of the closed structure is also cooled through the cover 46.

Next, cooling of the inside of the optical disk library device will be described. Power supply unit 11 and cartridge storage 1
The data recording / reproducing apparatus 2 and the controller 16 are separated by a partition plate 17. The library device includes a power supply unit 11 and a data unit.
A hole for taking in external air is formed in the upper surface and the lower surface of the portion where the recording / reproducing apparatus 2 is mounted. In addition,
A hole for taking in external air is also formed right next to the data recording / reproducing apparatus 2.

First, a method of cooling the power supply unit 11 is shown in FIGS. The cooling fan of the power supply unit 11 is attached to the upper part of the power supply unit 11. The wind direction is the direction of discharging the power to the outside. A hole is formed on the side surface of the power supply unit 11 so that the cooling air also flows inside. As for the flow of air in the library device, the outside air is sucked from the lower surface of the device by the fan of the power supply unit 11, flows around and inside the power supply, and is discharged from the upper hole. Since the power supply unit 11 has a narrow duct shape like a chimney, even a small fan can efficiently release heat to the upper part of the device.

Next, the cooling of the data recording / reproducing apparatus 2 and the control section 16 will be described. The method of cooling the above two locations inside the library device is shown in FIGS. 3, 4, 6, and 7. The data recording / reproducing apparatus 2 is mounted in the center of the library apparatus, and a control unit is arranged above it. Fans 20 and 44 for cooling this portion are attached adjacent to the side surface and the lower surface of the data recording / reproducing apparatus 2. This is because the data recording / reproducing apparatus 2 has the lowest allowable temperature and the largest heat generation amount, and thus requires a large amount of cooling air. Since the data recording / reproducing apparatus 2 is mounted in the approximate center of the library apparatus and the cooling fans 20 and 44 are arranged adjacent to each other, the air generated in the data recording / reproducing apparatus 2 is discharged to the outside. Since the path is shortened and the wind speed can be increased, it is possible to cool efficiently. As the air flow inside the library apparatus, the cooling fan 44 takes in air from the lower surface of the library apparatus, and the cooling fan 20 takes in air from the side and front of the library apparatus through the filter 19. Heated air that has cooled the data recording / reproducing apparatus 2 and the control unit 16 is discharged to the outside of the library apparatus through the holes on the upper surface of the apparatus. At this time, the cooling air flows through the upper and lower surfaces of the substrate portion 47 and the control portion 16 which are heat generating portions of the data recording / reproducing apparatus 2 and is exhausted to the outside through the holes in the upper portion. Here, the air taken in from the side surface and the front surface flows along the side surface and the rear surface of the data recording / reproducing apparatus 2 and hits the partition plate 17 to affect the air taken in from the lower surface and escape to the upper part. Since there is a partition plate 17,
The heat generation of the recording / reproducing apparatus 2 does not affect the power supply unit 11. As in the case of the power supply unit 11, the duct has a duct-like shape, so that even a fan having a small flow rate can be efficiently cooled.

When the number of data recording / reproducing devices 2 and the control unit 16 mounted is small or the amount of heat generation is small, the number of air intake ports and cooling fans from the outside may be reduced. On the contrary, when more external air is required, the duct 48 may be provided as shown in FIG.

Next, the sensor system of the embodiment will be described.
FIG. 8 shows an example of a sensor installed in the housing of an optical disk library device constructed according to the present invention.

FIG. 9 shows an example of the sensor set in the holder. The medium ejection sensors 50a and 50b are the medium storage shelves 1.
And a holder 3 or 4 for detecting that the optical disk cartridge 10 has jumped out of the medium storage shelf 1 to the holder 3 or 4 side. It has also been confirmed that the state in which the optical disk cartridge 10 is being conveyed from the medium storage shelf 1 to the holder 3 or 4 is correct using this sensor. The medium ejection sensors 50a and 50b are optical sensors, and each of the light emission side medium ejection sensor 50a and the light reception side medium ejection sensor 50b is paired. That is, when the light beam from the light emitting side medium jump sensor 50a is blocked by the optical disc cartridge 10,
The light-receiving side medium pop-out sensor 50b has a mechanism for detecting this.

In order to increase the storage capacity, the medium storage shelves 1 are installed in a plurality of rows inside the optical disk library device. Since the medium ejection sensors 50a and 50b are installed in front of each row of the medium storage rack 1, the medium ejection sensors 50a and 50b are provided.
Are also installed.

The light of the light emitting side medium pop-out sensor 50a of each medium storage rack 1 is emitted toward the light receiving side medium pop-out sensor 50b, but is emitted so as not to affect other light receiving side medium pop-out sensors. Side medium protrusion sensor 50
Ideally, the light flux of a should reach the light-receiving side medium pop-out sensor 50b without spreading. In order to achieve this in the prior art, a light beam narrowing mechanism using an expensive optical lens group, a laser module, or the like is used for the light emission side medium protrusion sensor 50a. In this apparatus, an inexpensive high-intensity LED is used for the light emitting side medium jump sensor 50a, and the light is modulated by the library control unit 16 and sent as a signal. The light-receiving side medium pop-out sensor 50b sends the received optical signal to the library controller 16 and analyzes the modulated signal. Only when the analyzed modulation signal is synchronized with the modulation of the light emitting side medium jump sensor 50a, the presence or absence of light shielding is determined. The modulation frequency is set sufficiently higher than the frequency required to control the medium conveyance, and the time for determining that the light modulation is synchronized does not affect the medium conveyance. The light emitted from the light-emission-side medium ejection sensor 50a of each medium storage shelf 1 is emitted toward the light-reception-side medium ejection sensor 50b, but reaches the adjacent light-reception-side medium ejection sensor 50b due to the diffusion of the light. However, the sensors in each row emit the sensor 50a at different times, and detect the signal of the sensor 50b only when the sensor 50a in its own row is emitting light.
Even if the light of a is received, it is not affected because it is not the time to be detected.

The withdrawal sensor 51a is a sensor for detecting that the holder (A) 3 is at a position withdrawn from the medium transport path. The retreat sensor 51b is a sensor that detects that the holder (B) 4 is at a position retracted from the medium conveyance path.
When either the holder (A) 3 or the holder (B) 4 becomes inoperable, the defective holder performs the retracting operation to the position where the sensor is detected, and does not prevent the medium transportation by the normal holder. Secure the transportation route. The evacuation operation is executed by the vertical movement mechanism of the faulty holder when the vertical movement mechanism of the faulty holder is operable, but when the vertical movement mechanism of the faulty holder cannot be operated, the faulty holder is pushed out to the retracted position by the normal holder. It is feasible.

The positioning sensor 52 is a sensor mounted near the elevator shaft of each holder.

The position of the holder can be known from the number of rotations of the motor from the encoder attached to the elevator motor 5, but the positioning sensor 52 is a sensor for confirming that the vertical positioning of the holder is correctly performed. One flag for shielding the positioning sensor 52 is provided for each cell, and it is also confirmed that the holder is correctly moved by confirming that the number of flags is correctly counted during the vertical movement of the holder. Further, after the holder has stopped moving, the flag shields the positioning sensor 52 from light, thereby confirming that the positioning is correctly performed in front of the cell. The positioning sensor 52 is ideally the holder 3 or 4
Although it is desired to place the flag near the cell at the most distal end, the holder carries out left and right movements, so that the flag for shielding the positioning sensor 52 from light cannot be mounted, and it is set at this position.

The position shift detection sensor 53 is a sensor attached to the tip of the holder 3 or 4 immediately before the cell. The sensor is a sensor that detects a reference position for the library controller 16 to recognize the amount of deformation when the tip of the holder is vertically deformed due to an unexpected external force applied to the holder. Consider a case where the holder is deformed downward due to an abnormal external force. If the amount of deformation exceeds the specified amount, the feeding operation of the optical disc cartridge 10 becomes an error. Upon detecting this, the library control unit 16 executes the operation of confirming the deformation amount of the holder. The procedure is to position the holder at the specified position in the left-right direction and then lower the holder downward. The encoder rotation speed of the elevator motor is learned at the position where the misregistration detection sensor 53 fixed on the floor detects the light shielding flag. The amount of positional deviation between the learned value and the reference position is stored as the amount of deformation of the holder and is fed back to the control parameter as a correction value for vertical movement position control of the holder.

The medium presence / absence sensor 54 is the holder 3 immediately before the cell.
Alternatively, it is a sensor attached to the leading edge of 4. The sensor is a sensor that detects the presence / absence of the optical disk cartridge 10 stored inside the cell. The sensor is powerful
The presence of the cartridge in the cell is checked by the initialization operation when turned on, and the library controller 1 of the library device is checked.
Since there is no difference from the cartridge information stored in the non-volatile memory mounted in No. 6, it is confirmed that the cartridge is not moved while the device power is off. The sensor uses a reflection type photo sensor and directly detects the cartridge. Therefore, the detection signal is affected by the color of the cartridge, stains, warpage, inclination in the cell, etc., the signal is not guaranteed on all sides of the cartridge, and the detection signal may be partially lost. is there. In order to improve the reliability of the cartridge detection, it is necessary to identify the presence of the cartridge by a micro so as not to make an erroneous detection even if a part of the signal is lost. In the present embodiment, the signals are checked at a constant short interval between the flags that can originally detect the cartridge, plus 1 is detected if there is, and minus 1 if no is detected, and the added value is a predetermined number. Recognize that there is a case that exceeds. As a result, even if the cartridge becomes dirty and almost no signal is output, the presence or absence of the cartridge can be confirmed without erroneous detection.

The LR sensor 55 is a sensor for detecting that the holder is at the reference position in the left-right direction. The inversion-prohibited area sensor 56 is a sensor that detects that the holder is in the vicinity of the uppermost portion / the lowermost portion of the device, which cannot perform the reversing operation due to the constraint due to the dimension. This sensor also serves as a reference position detection function for the vertical movement of the holder.

The horizontal detection sensor 57 indicates the horizontal state of the holder,
In other words, it is a sensor that detects that the optical disk cartridge 10 can be inserted into and removed from the cell. Since the feed operation and the reversing operation are executed by the feed motor, this sensor also has the function of detecting the reference position of the feed operation.

Next, one embodiment of the control method of the present invention is shown in FIG.
0, FIG. 11, FIG. 12, FIG. 13, and FIG.
FIG. 10 is a schematic block diagram of the present invention. Host device 6
1, a library controller 16, a data recording / reproducing device 2,
The spare data recording / reproducing device 64 is connected by the SCSI interface 62. Further, the library control unit 16, the data recording / reproducing device 2, and the spare data recording / reproducing device 64 are
It is connected by a dedicated hot line 63.

FIG. 11 is a schematic view of the hot line 63. The hot line 63 includes a control unit transmission signal line 71, a control unit reception signal line 70, and a ground line 72. In the case of the present embodiment, the transmission signal and the reception signal use serial signals and exchange commands and responses with ASCII code. The specific exchange of signals will be described below. When transmitting a command from the MPU (microprocessor unit) 67 of the library control unit 16 to the data recording / reproducing apparatus 2, when the library control unit 16 sends an ASCII code corresponding to the command to the transmission circuit 68, the transmission circuit 68 The code is converted into a serial signal and transmitted to the ODD receiving circuit 69. The receiving circuit 69 of the data recording / reproducing apparatus 2 converts the serial signal into an ASCII code and transmits it to the MPU 67 of the data recording / reproducing apparatus 2. The transmission from the data recording / reproducing apparatus 2 to the library control unit 16 is also performed in the same manner as above.

The hot line 63 is used by the library controller 16 to confirm the state of the data recording / reproducing apparatus 2 and by issuing a loading command and an eject command from the library controller 16 to the data recording / reproducing apparatus 2. This is an interface used to control the recording / reproducing apparatus 2.

Next, a schematic medium carrying sequence using the hot line 63 will be described. Library control unit 16
When the medium transport command is received from the higher-level device 61, controls the transport mechanism unit 66 to take out the medium from the medium storage shelf 1 and transport the medium in front of the data recording / reproducing device 2. Here, the library control unit 16 confirms by the hot line 63 whether the data recording / reproducing apparatus 2 is in a state in which the medium can be inserted. When the medium can be inserted, the medium is inserted into the data recording / reproducing apparatus 2 from the transport mechanism section 8. After inserting the medium, the library control unit 16 confirms by the hotline 63 that the medium has been completely inserted into the data recording / reproducing apparatus 2. When the medium has been completely inserted, the library control unit 16 issues a loading command to the data recording / reproducing apparatus 2 via the hot line 63. The data recording / reproducing apparatus 2 reports the end to the library control unit 16 by the hot line 63 when the medium is loaded according to the loading command and becomes the READY state (R / W enabled state).

12, 13, and 14 are schematic operation sequence diagrams of the present invention.

Next, with reference to FIG. 12, a description will be given of the operation sequence of the present invention when the medium is conveyed.

When the medium transport command is issued from the host device 61, the library library control unit 16 transports the designated medium from the medium storage shelf to the data recording / reproducing device 2 having the designated ID. The data recording / reproducing apparatus 2 is transferred by a command via the hot line 63 of the library library control unit 16 (conveyed to the recording / reproducing apparatus of ID = 0 in this figure).
Perform a ding operation. At this time, when an error occurs, the data recording / reproducing apparatus 2 reports to the library control unit 16 via the hot line 63. Library control unit 16
Removes the medium from the data recording / reproducing apparatus 2 and, via the hot line 63, the data recording / reproducing apparatus 2 (ID = 0).
To delete the ID. As a result, the data recording / reproducing apparatus 2 makes the ID null.

Next, the library control unit 16 instructs the spare data recording / reproducing device 64 (ID = none) to set the ID to 0 via the hot line 63. Accordingly, the spare data recording / reproducing device 64 sets the ID to 0. The library control unit 16 conveys the medium to the spare data recording / reproducing device 64 having the ID of 0, and the spare data recording / reproducing device 64.
Instruct to load. Spare data recording / reproducing device 6
4 executes loading, and after normal termination, reports the termination to the library controller 16. In response to this, the library control unit 16 reports the end to the upper device 61.

Next, the read / write (R / W) operation of the operation sequence of the present invention will be described with reference to FIG.

When a read / write command is issued from the upper device 61, the data recording / reproducing device 2 (ID =
0), the read / write operation is performed. At this time, if an error occurs, the data recording / reproducing apparatus 2 passes the hot line 63 to the library controller 16
Report to The library control unit 16
In the case of write error, write data is transferred from the data recording / reproducing device 2 and stored. After that, the medium is pulled out from the data recording / reproducing apparatus 2, and the data recording / reproducing apparatus 2 (ID = 0) is instructed to remove the ID via the hot line 63. As a result, the data recording / reproducing apparatus 2 makes the ID null.

Next, the library controller 16 instructs the spare data recording / reproducing device 64 via the hotline 63 to set the ID to 0 in the spare data recording / reproducing device 64 (ID = none). Accordingly, the spare data recording / reproducing device 64 sets the ID to 0. The library control unit 16 conveys the medium to the spare data recording / reproducing device 64 having the ID of 0, and instructs the spare data recording / reproducing device 64 to load. The spare data recording / reproducing device 64 executes loading, and after normal termination, reports the termination to the library controller 16. In response to this, the library controller 16 reads the read / write
In the case of the write command and the write, the write data is instructed to the spare data recording / reproducing device 64 via the hot line 63. After the end of the read / write operation, the spare data recording / reproducing device 64 reports the end to the upper device.

As described above, even when a failure occurs in the data recording / reproducing apparatus 2, in the optical disk library apparatus,
It can be restored automatically.

Next, of the operation sequence of the present invention, the speeding up of the medium conveyance to the data recording / reproducing apparatus 2 having the same ID will be described with reference to FIG.

When the medium transport command is issued from the host device 61, the library library controller 16 transports the designated medium from the medium storage shelf to the data recording / reproducing device 2 having the designated ID. The data recording / reproducing apparatus 2 is transferred by a command via the hot line 63 of the library library control unit 16 (conveyed to the recording / reproducing apparatus of ID = 0 in this figure).
Perform a ding operation. When the loading is completed normally, the data recording / reproducing apparatus 2 goes through the hot line 63,
Report to the library control unit 16.

At this time, when a command for transporting a medium is issued from the host device 61 to the data recording / reproducing device 2 having the same ID as described above, the library library control section 16 records / reproduces the designated medium from the medium storage shelf as the preliminary data. Device 64
Transport to The spare data recording / reproducing device 64 performs a loading operation by a command via the hot line 63 of the library control unit 16. When the loading is completed normally, the spare data recording / reproducing device 64 reports to the library control unit 16 via the hot line 63. In this state, the library control unit 16 waits for the next command from the higher-level device 61 to issue a command to return the medium of the data recording / reproducing device with ID = 0 to the shelf.

When the host device 61 issues a command to return the medium of the data recording / reproducing device with ID = 0 to the shelf, the library control section 16 pulls out the medium from the data recording / reproducing device 2 and, via the hot line 63, The data recording / reproducing apparatus 2 (ID = 0) is instructed to eliminate the ID. As a result, the data recording / reproducing apparatus 2 makes the ID null.
Spare data recording / reproducing device 64 via hot line 63
Instruct (ID = none) to set the ID to 0. Accordingly, the spare data recording / reproducing device 64 sets the ID to 0. The data recording / reproducing apparatus 64 reports the end to the library control unit 16 after the normal end. In response to this, the library control unit 16 reports the end to the upper device 61.

As described above, most of the operation of the mechanical system is completed when the medium transport command to the data recording / reproducing apparatus having the same ID is subsequently issued, so that the access speed can be increased.

[0060]

According to the present invention, the data recording / reproducing apparatus 2
It is possible to realize an optical disk library device that is hard to be disabled even when a failure occurs.

[Brief description of drawings]

FIG. 1 is an internal schematic structural diagram of an optical disk library device.

FIG. 2 is an explanatory diagram illustrating a mechanism of a holder.

FIG. 3 is an explanatory diagram illustrating an embodiment of a dustproof structure and a cooling method of a library device according to the present invention.

FIG. 4 is an explanatory diagram illustrating an embodiment of a dustproof structure and a cooling method of a library device according to the present invention.

FIG. 5 is an explanatory diagram illustrating an embodiment of a dustproof structure and a cooling method of a library device according to the present invention.

FIG. 6 is an explanatory diagram illustrating an embodiment of a dustproof structure and a cooling method of a library device according to the present invention.

FIG. 7 is an explanatory diagram illustrating an embodiment of a dustproof structure and a cooling method of a library device according to the present invention.

FIG. 8 is an explanatory diagram showing an embodiment of a sensor installed in the housing of the optical disk library device configured according to the present invention.

FIG. 9 is an explanatory diagram showing an example of a sensor set in a holder.

FIG. 10 is a schematic block diagram of an optical disk library device to which the present invention is applied.

FIG. 11 is a schematic view of a hot line applied in the present invention.

FIG. 12 is a diagram for explaining the operation sequence of the present invention when the medium is being conveyed.

FIG. 13 is a diagram illustrating a read / write (R / W) operation sequence according to the present invention.

FIG. 14 is a diagram for explaining medium conveyance to the data recording / reproducing apparatus having the same ID in the operation sequence of the present invention.

[Explanation of symbols]

 1, medium storage shelf 2, data recording / reproducing device 3, holder A 4, holder B 5, elevator motor 6, elevator motor 7, elevator shaft 8, synchro belt 9, flat cable 10, optical disk cartridge 11, power supply 12, medium input Mechanism 13, counterweight 14, counterweight 15, counterweight guide 16, library control unit 17, partition plate 18, intake port 19, filter 20, fan 21, medium holding mechanism 22, feed guide shaft 23, lead screw 24, left and right Movement guide shaft 25, left / right movement synchro belt 26, feed motor 27, left / right movement motor 40, side external air flow 41, front external air flow 42, lower external air flow 43, discharged air flow 44, fan 5 a, light-emission side medium jump-out sensor 50b, light-receiving side medium jump-out sensor 51a, retreat sensor 51b, retreat sensor 52, positioning sensor 53, misalignment detection sensor 54, medium presence sensor 55, LR sensor 56, reversal prohibition area sensor 57, horizontal Detection sensor 61, host device 62, SCSI interface 63, hot line 64, spare data recording / reproducing device 65, library device 66, medium transport mechanism 67, MPU 68, transmitting circuit 69, receiving circuit 70, control unit receiving signal line 71 , Control unit transmission signal line 72, ground line

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location G11B 17/22 9369-5D G11B 17/22 19/02 501 501 19/02 501U

Claims (2)

[Claims] 1. A data storage having a storage box for storing a plurality of media, a data recording / reproducing apparatus, a mechanism section for carrying a medium between the storage box and the data recording / reproducing apparatus, and a library control section for controlling these. In a data storage device having a function of switching the ID on the SCSI interface with the host device of the data recording / reproducing device mounted by the library control unit, the data recording without the ID on the SCSI interface When one or more playback devices are also connected and the data recording / playback device having the ID fails, the library controller automatically fails without the involvement of the host device.
A data recording / reproducing apparatus having a function of giving an ID of a data recording / reproducing apparatus having a failure to a data recording / reproducing apparatus having no ID instead of eliminating the ID on the interface. 2. The apparatus according to claim 1, wherein when a command for transporting the medium to the data recording / reproducing apparatus having the same ID is continuously issued from the host apparatus, the second command is executed after the first command is executed. Is carried to another unused data recording / reproducing apparatus or to a data recording / reproducing apparatus not having the ID of claim 1, and the data recording / reproducing is performed on the medium carried by the first command. The ID of the data recording / reproducing device that has carried the medium designated by the second command after the command to carry the device other than the device has been issued.
Is changed to the ID designated by the host device by the library control unit, thereby reducing the second command execution time.