JPH11212844A - Optical disk library device subsystem - Google Patents

Abstract

PROBLEM TO BE SOLVED: To have a data management part in a master OLU automatically perform reproduction of data with regard to a slave OLU when data are registered from a host. SOLUTION: A master OLU 1101 has a network function part 1104 inside and is connected to slave OLU 1107 for backup in a remote place with a network 112. Information on name of each optical disk in the master OLU, a register date and register time of data registered with the optical disk and the capacity of the data is had by the data management part 105 in the master OLU. At the time of registering data, in accordance with register with the optical disk in the master OLU, the data management part in the master OLU automatically performs a backup work with the optical disk in the slave OLU for backup without a host intervened and, by doing it, a user can perform duplex operation of data without being conscious of the backup of optical disk data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an optical disk library device (Optical Library Uni).
t, hereinafter referred to as OLU).

[0002]

2. Description of the Related Art Conventional data management for data duplication is disclosed in Japanese Patent Application Laid-Open No. 4-102135 and Japanese Patent Application Laid-Open No. 4-295914.
JP, JP-A-7-28708, JP-A-8-27
No. 2666 describes a RAID configuration with a magnetic disk, or has many magnetic disks,
A backup is performed by duplicating data in a storage medium such as a magnetic disk, for example, by configuring a configuration such as mirroring, or by duplicating in a single magnetic disk.

In addition, data once registered on an optical disc is copied between optical disc library apparatuses or optical disc apparatuses, or data is duplicated via a host instead of the optical disc library apparatus alone.

[0004]

According to the above-mentioned prior art, the backup data registered in duplicate is carried on a highly confidential storage medium such as a magnetic disk or a disk array, or the storage medium is full of data. If it becomes
When storing data in a magnetic disk at another location, the data must be copied once to a portable storage medium such as a floppy disk or optical disk, which requires much time and work for backup. .

[0005] In addition, a host is always required to perform data duplication, and it is necessary to perform various operation procedures from the host. There is a possibility of breaking.

An object of the present invention is to eliminate the above-mentioned operation errors caused by the backup operation, portability, and operation from the host.

[0007]

In order to solve the above problems, the present invention mainly employs the following configuration.

A host, a master optical disk library device (hereinafter referred to as OLU) for storing data including image data or document data from the host, a slave OLU for storing backup data of data in the master OLU, An optical disk library device subsystem including a host, the master OLU, and a network for connecting the slave OLU to a network, wherein the master OLU has a registration date of data registered in each optical disk and a registration of data. It manages the management contents including the time and the capacity of the registered data, manages the name of the registered optical disk, and directly registers data to the slave OLU through the network without passing through the host when registering data from the host. Data to be copied Management unit, an optical disk drive for reading / writing data from / on an optical disk, an accessor controller for controlling operations on the optical disk including insertion / ejection of the optical disk and movement in the master OLU, and a network having a function for performing network connection The slave OLU has a data management unit for managing the management contents of backup data and the name of the optical disk to be backed up, and communicating with the data management unit of the master OLU; an ODD; an ACC; And a registration unit for data management contents and an optical disk name in the data management unit of the master OLU, and registration information for the data management contents and the optical disk name in the data management unit of the slave OLU. Through the host to be identical Optical disk library subsystem for communication with each other in the data management unit without.

In the optical disk library device subsystem, the data management unit of the slave OLU periodically checks data registered on the optical disk in the master OLU. If data can be taken out from the optical disc in the master OLU, it is determined that there is no abnormality in the optical disc. If the data cannot be taken out, after inserting a new optical disc, the data management unit of the master OLU, An optical disk library device subsystem that obtains registration information on data management contents and optical disk names from the data management unit of the slave OLU, registers the data in its own data management unit, and executes data restoration.

Further, a host and an OL for storing data including image data or document data from the host.
U, a comprehensive backup OLU for storing backup data of the data in the OLU, the host and the O
An optical disc library apparatus subsystem including an LU and a network for connecting the comprehensive backup OLU to a network, wherein the host and the OLU are provided in a plurality in a pair, and the comprehensive backup OLU can store a large number of optical discs. A plurality of OLUs, each of which manages management contents including a registration date of data registered on each optical disc, a registration time of data, and a capacity of the registered data; And a data management unit that performs a data copy operation directly through the network without passing through the host to the comprehensive backup OLU when registering data from the host, an ODD, an ACC, and a network connection. A network function unit having a function for performing
Wherein the comprehensive backup OLU manages the contents of backup data and the name of the optical disk to be backed up, and communicates with the data management unit of the OLU; an ODD; an ACC; a network function unit; And the registration information on the data management content and the optical disc name in the data management unit of the OLU is the same as the registration information on the data management content and the optical disc name in the data management unit of the comprehensive backup OLU. An optical disk library device subsystem for transmitting information between data management units without the intervention of a host.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Some embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an OLU for realizing the present invention.
(Optical library unit) This shows the configuration of the subsystem device. The OLU subsystem device is a master OLU1 which is an optical disk library device.
101, built in the master OLU 1101, loading / unloading the optical disk, moving the master OLU 1101, etc.
An accessor controller ACC 1102 for controlling operations on the optical disk, an ODD (optical disk drive) 1103 which is an optical disk drive for writing / reading the optical disk, and a master OLU 110
1, a network function unit 1104 having a function for making a network connection, and stores information on each name of each optical disc mounted in the master OLU 1101, registration date, registration time, and data capacity of data in the optical disc. A data management unit 1105 for controlling the data duplication operation;
It has.

The OLU subsystem device inputs data to the optical disk in the master OLU 1101 at the time of data registration and connects the master OLU 1101 to the host 1106 via SCSI.
And a slave OLU 1107 for storing backup data of the optical disk data in the slave OLU 01.

An accessor controller ACC2108 built in the slave OLU 1107, an optical disk drive ODD 2109 also built in the slave OLU 1107, and a slave OLU 1
A master OLU 1101 and a slave OLU 1 to which a host 1106 is connected, comprising a data management unit 2110 built in the slave 107 and a network function unit 2111 also built in the slave OLU 1107.
107 is a network 11 for making a network connection
2 are connected.

The basic operation of data replication is shown in FIG.
11 is a flowchart of the data duplication operation, and FIG.
If the description is made with reference to the U subsystem system configuration diagram, the master O
1001 in which data to be registered is registered from the host 1106 in the optical disk in the LU 1101, and the master OLU 1
A data management unit 1105 in the storage unit 101 stores information 1002 and 1003 on the name of the registered optical disk, the registration date and time at the time of registration, the registration time, and the data capacity. Master O
The data management unit 1105 in the LU 1101 is a data management unit 2110 in the backup slave OLU 1107.
, The name of the registered optical disk is notified 1004.

The data management unit 2110 in the slave OLU 1107 stores an optical disk having the same name as the optical disk registered in the master OLU 1101 in the slave OLU 1107.
1005 to find out of 107, here slave OL
If there is no optical disk with the same name in U1107, the data management unit 2110 in the slave OLU 1107 notifies the data management unit 1105 in the master OLU 1101 that there is no optical disk 1012. And
The data management unit 1105 in the master OLU 1101 displays that there is no corresponding optical disk in the slave OLU 1107, and displays to the host 1106 to insert an unformatted optical disk in the slave OLU 1107.
013.

After the display, after the optical disk is inserted into the slave OLU 1107, the host 1106 sends the slave OLU
The master O notifies that the optical disk has been inserted into the LU 1107.
The data is transmitted to the LU 1101. At the same time, host 1106
Performs the operation of giving the slave OLU 1107 the format of the optical disk and the name of the optical disk whose data is to be duplicated, so that the slave OLU 110
7 Slave OL that received the message
The data management unit 2110 in the U1107 has the format of the optical disc and the master O
An operation for naming the optical disk in the LU 1101 is performed 1014.

If an optical disk having the same name exists, the data management unit 2110 in the slave OLU 1107 notifies the data management unit 1105 in the master OLU 1101 that the optical disk has been found 1007.

When the backup optical disk for data duplication is prepared, the data management unit 1105 in the master OLU 1101 transfers the optical disk data in the master OLU 1101 to the slave OLU 1107, and automatically starts data duplication 1008. At this time, slave O
The same information as the information registered in the data management unit 1105 in the master OLU 1101 is written to the data management unit 1110 in the LU 1107 1009.

Here, when the data has not been normally written to the optical disk in the slave OLU 1107, the data management unit 1105 in the master OLU 1101 is notified that the data has not been written normally, and the notification is received 1015. The data management unit 1105 in the master OLU 1101 starts to write the data of the optical disk in the master OLU 1101 to be duplicated again to the optical disk in the slave OLU 1107 1016.

When data is written normally, the slave OLU
The data management unit 2110 in the master OLU 1101 confirms that the data has been written normally.
5 is notified 1011.

What has been described above is the basic operation of data replication.

FIG. 2 shows the configuration of the OLU subsystem in which a disk array 212 is connected between the host 206 and the master OLU 201 in FIG.

The device configuration includes a master OLU 201, which is an optical disk library device, and an accessor controller ACC320 built in the master OLU 201.
2. ODD 3203, which is an optical disk drive also in the master OLU 201, and a network function unit 320 for connecting the master OLU 201 to the network
4. It has a data management unit 3205 that stores information on each name of optical disks mounted in the master OLU 201, registration date, registration time, and data capacity of data in the optical disks and controls data duplication. .

The apparatus configuration includes a disk array 212 for temporarily storing data or data input from the host 206 for data search, a host 206 for registering data in the disk array, and a remote location. Slave OLU 207, slave OLU 207
Accessor controller ACC42 built in
08, an optical disk drive ODD 4209 also built in the slave OLU 207, and a data management unit 421 also built in the slave OLU 207
1, a network function unit 4210, which is also built in the slave OLU 207;
The LU 201 and the slave OLU 207 are connected by a network 213 which is a network.

In this configuration, when data is input from the host 206 to the disk array 212, the data is registered in the disk array 212. When some data is stored in the disk array 212, the disk array 212
Is a master OLU according to an instruction from the host 206.
Data is backed up to the optical disk in 201. When a backup is started from the disk array 212 to the master OLU 201, the master OLU 201
01 is the master OLU
The data of the optical disk in the slave OLU 20
7. Copying of data to the optical disk No. 7 is started.

As described above, in this configuration, the disk array is placed between the host 206 and the master OLU 201, and data input from the host 206 is temporarily stored in the disk array 212. Disk array 212
When a certain amount of data is stored in the
6 to the master OLU 201 for backup. At the same time, the apparatus is configured to replicate data from the master OLU 201 to the slave OLU 207.

FIG. 3 shows the configuration of the OLU subsystem when a number of OLUs are connected on the network 330.

As the device configuration, an OLU (1) 301 which is an optical disk library device, and an accessor controller ACC 530 built in the OLU (1) 301
2. ODD 5303, which is an optical disk drive also in the OLU (1) 301; a network function unit 5304 for connecting a network to the OLU (1) 301;
Each name of each optical disk mounted in the OLU (1) 301, registration date of data in the optical disk, registration time,
A data management unit 5305 for storing data capacity information and controlling data replication;

Further, as a device configuration, a host (1) 306 for registering data on the optical disk in the OLU (1) 301 at the time of data registration, and an OLU at another remote location
(2) 307, OLU (2) 307 Accessor controller ACC6308 built in
(2) Optical disk drive O built in 307
DD6309, a data management unit 6311 also included in OLU (2) 307, and OLU (2) 30
7, a network function unit 6310 built in 7, a host (2) 312 at another remote place, n OLUs at another remote place, and OLUn 319 and OLUn 319 connected on the network 330. O in
DD8321, also ACC in OLUn319
8320, a network function unit 8322 also in the OLUn 319, a data management unit 8323 also in the OLUn 319, a host n 324 connected to the OLUn 319, and n optical disks in each OLU connected to the network 330 Comprehensive backup OLU325, which stores data backups all at once,
Accessor controller ACC9326 in comprehensive backup OLU325, comprehensive backup OLU32
5, the optical disk drive ODD 9327 in the general backup OLU 325, the network function unit 9328 for network connection, and the comprehensive backup O
And a data management unit 9329 in the LU 325.

In this configuration, a large number of hosts connected to the OLU are connected to the network 330, and all data registered from each host is backed up to the optical disk in the comprehensive backup OLU 325 regardless of each host. Automatically registered as data. The integrated backup OLU 325 has a plurality of ODDs 9327 to support a large number of simultaneous backups, and performs backup.

FIG. 4 shows the accessor controller AC in the master OLU 2401 and the slave OLU 2406.
The device configuration of the OLU subsystem having a data management function on C.

As for the device configuration, a master OLU 2401 which is an optical disk library device, a master OLU 240
ODD1040 which is the optical disk drive in
3. Network function unit 10404 for connecting a network to master OLU 2401, master OLU 240
1 is built in the accessor controller ACC, the ACC for automatically duplicating data by the ACC, a data management unit 1402, a host 2405 for inputting data to the master OLU 2401, and a network 410.

Further, as for the device configuration, the slave OLU 2406 at a remote location, the ODD 11408 within the slave OLU 2406, and the slave OLU 240
6, the ACC and data management unit 2 also in the slave OLU 2406
407, and the accessor controller ACC
In addition, an automatic data replication function shown in FIG.

FIG. 5 has no host, and directly connects a data input device such as a scanner 506 to the master OLU 3501 as an input device to the data master OLU 3501.
The connection is made by CSI.

The optical disk library device includes a master OLU 3501, an accessor controller ACC10502 in the master OLU 3501, and an optical disk drive ODD1 in the master OLU 3501.
2503, network function unit 12504 for connecting master OLU 3501 to the network, master OLU3
501, the data management unit 10505, the master OLU
A scanner 506 for registering data in the optical disc in the 3501;

Further, as a configuration, it is located at a remote place,
Slave OLU 3507, ACC 11508 in slave OLU 3507, also slave OLU 3507
ODD13509 inside, also slave OLU35
07, a network function unit 13510 for connecting a network, and a data management unit 11511 also included in the slave OLU 3507.
3501 and slave OLU 3507 are connected to network 51
2 and a backup operation is performed according to the data duplication operation procedure shown in FIGS.

FIG. 6 shows a device configuration in which a compare check function is built in the master OLU in the basic device configuration of FIG.

The optical disk library includes a master OLU 4601 and a master OLU 460.
Accessor controller ACC1 built in 1
2602, a network function unit 14604 for connecting the master OLU 4601 to the network, an optical disk drive ODD 14603 which is also in the master OLU 4601 and drives the optical disk, and a master OLU
4601, a data management unit 12605 for storing registration information of data registered on the optical disk, and a registration date of data registered on the optical disk in the master OLU 4601 and data on the optical disk registered in the slave OLU 4608. , Depending on registration time and data capacity
And a compare check function unit 606 for comparing and checking two data.

Further, as an apparatus configuration, the master OLU4
OLU 4608 and OLU 4608 for storing backup data of the optical disk data 601
Accessor controller ACC136 built in
09, an ODD 15610 which is also an optical disk drive in the slave OLU 4608, and a slave OLU
4608, and a data management unit 13612 that manages information of data registered on the optical disk in the slave OLU 4608. When a compare check is performed, each optical disk in the master OLU 4601 is used. Of the data registered in the slave OLU 4608 and the registration date, registration time, and data capacity of the data registered in the optical disk in the slave OLU 4608, and confirms whether there is any abnormality.

FIG. 7 shows a master O having neither a host nor an input device.
The LU 5701 and the slave OLU 5707 are connected to each other via a network 712, and a data registration / retrieval function 706 is provided inside the master OLU 5701.
Registration / registration of the U5701 alone to the optical disk in the master OLU 5701 and the optical disk in the slave OLU 5707
This is a device configuration in which search / backup is performed.

As for the device configuration, a master OLU 5701 and a master OLU 570 which are optical disc library devices are used.
1, an accessor controller ACC14702 for controlling the disk of the optical disk in the master OLU 5701, and a master O
A network function unit 16704 for connecting a network to the LU 5701, manages information at the time of registration of data registered on an optical disk in the master OLU 5701,
The data management unit 14705, which automatically performs data replication at the time of data registration, is in the master OLU 5701,
A registration / search function 706 for registering / searching optical disk data in the LU is provided.

Further, as a device configuration, a slave OLU
5707, ACC15 in slave OLU5707
709, ODD also in the slave OLU 5707
17708, a network function unit 17710 for connecting a network to the slave OLU 5707, and a data management unit 15711 also in the slave OLU 5707
The master OLU5701 and the slave OL
U5707 is connected by the network 712.

As described above, in the present configuration, the OL
It is possible to perform registration, search, and backup on the optical disk by U alone. As the data duplication operation, FIG.
0, and a configuration in which data duplication is performed according to the operation procedure shown in FIG.

FIG. 8 shows the host 4806 and the master OLU 6
The OLU subsystem 801 connects the slave / master OLU 807 via the network 812 instead of the SCSI.

The device configuration includes a master OLU 6801 and a master OLU 680 which are optical disk library devices.
1, an optical disk drive ODD18803, an accessor controller ACC16802 for controlling a disk of the optical disk in the master OLU6801, and a master O
A network function unit 18804 for connecting a network to the LU 6801, manages information at the time of registration of data registered on the optical disc in the master OLU 6801,
A data management unit 16805 for automatically duplicating data at the time of data registration.

Further, as an apparatus configuration, the master OLU 6
A host 4806 that registers data in the 801, usually a slave / master OLU 80 that operates as a slave OLU
7. ACC17 in slave / master OLU807
809, an ODD 19808 also in the slave / master OLU 807, and a network function unit 1981 for connecting a network to the slave / master OLU 807
0, a data management unit 17811 which is also in the slave / master OLU 807 is built in, and the master OLU 68
01 and the slave / master OLU 807 are connected to the network 8
12 are connected.

In this configuration, the host 4806 and the master OL
U6801 and the slave / master OLU 807 are connected via the network 812, and the host 4806 sends the master OL
When data is registered on the optical disk in U6801 via a network, the data duplication operation shown in FIGS. 10 and 11 is performed.

When access to or reading from the optical disk in the master OLU 6801 is impossible or data destruction occurs, the data management unit 168 in the master OLU 6801
05 informs the slave / master OLU 807 that an error has occurred in the master OLU 6801,
The master OLU 807 operates as a master OLU, and the search / registration operation from the host 4806 switches from the master OLU 6801 to the slave / master OLU 807, and the master OLU 6801 replaces the master OLU 6801.
Slave / master OLU that duplicated data of 801
The host 4806 performs search / registration at 807.

Then, the optical disk in the master OLU 6801 is subjected to a recovery process, and when the optical disk in the master OLU 6801 is recovered, the data management unit 16805 in the master OLU 6801 sends the slave / master OLU 8
07 to the master OLU 680 from the slave / master OLU 807.
Switch to 1.

If the host 4806 is on the optical disk of the slave / master OLU 807 while the master is switching.
Thus, when data is registered, the data is copied from the optical disk in the slave / master OLU 807 to the master OLU 6801.

FIG. 9 shows the configuration of FIG.
An OLU having a configuration in which an LU has a host and a slave OLU is also a master OLU and backups are performed between the OLUs
It is a subsystem device.

As for the device configuration, a master OLU 7901 and a master OLU 790 which are optical disk library devices are used.
Accessor controller ACC1 built in 1
8902, ODD 20903 which is an optical disk drive also in master OLU7901, master OLU7
A network function unit 20904 for connecting a network inside the 901, information on each name of each optical disc mounted in the master OLU 7901, registration date, registration time, data capacity of data in the optical disc, and data duplication. And a data management unit 18905 for controlling

Further, as an apparatus configuration, a host 5906 for inputting data to the optical disk in the master OLU 7901 at the time of data registration, a master OLU in a remote place,
8907, an accessor controller ACC19908 built in the master OLU 8907, an optical disk drive ODD 21909 also built in the master OLU 8907, a data management unit 19910 also built in the master OLU 8907, and a master O
A network function unit 21911 for connecting a network to the LU 8907, a host 6912 at a remote location
, Master OLU7901 and master O
The LU 8907 is connected by a network 913.

In this configuration, both master OLU 7901 and master OLU 8907 have a host, and host 59
The data input from 06 is copied to the optical disk in the master OLU 8907 by the operation of the flowchart of FIG. When data is input from the host 6912, the data is copied to the optical disk in the master OLU 7901. As described above, this configuration is an apparatus configuration of the OLU subsystem having the duplicate data to be backed up between the optical disks of the master OLUs.

Next, an operation procedure of data recovery when a data abnormality occurs will be described with reference to FIGS.

The data registered on the optical disk in the master OLU is independently checked periodically by the data management unit in the slave OLU by the data management unit in the slave OLU. As shown in FIG. 12 and FIG. 13, the data check starts an automatic check periodically at first regardless of the host. When the data check is started, it is checked whether the data management unit in the slave OLU can access the optical disk in the master OLU (whether data is taken out from the optical disk). If the optical disk in the master OLU can be accessed, it is determined that there is no abnormality in the optical disk itself in the master OLU 1101.

If the optical disk in the master OLU is inaccessible and the optical disk medium is not cleaned, 1102. Since the optical disk medium may be dirty, it is built in the master OLU. The optical disk medium in the master OLU is set on the optical disk automatic cleaning apparatus, and the medium is automatically cleaned 1106. Master OLU
After the cleaning of the optical disk medium in the master OLU, the data management unit in the slave OLU accesses the cleaned optical disk in the master OLU again.

If access is still not possible, there is a possibility that the optical disk in the master OLU may be broken. 1103, the inaccessible optical disk medium is removed from the master OLU, and a new optical disk is transferred to the master OLU.
1104. After inserting the optical disk medium into the master OLU, the master OLU automatically formats a new optical disk. After formatting, the master OLU
Automatically names a new optical disk based on information on the name of the optical disk from the slave OLU, and registers data information such as registration date, registration time, and data capacity of data registered in the backup data. Master OLU
Register with the data management unit in At the same time, Master OLU
In step 1105, data restoration of the optical disc in the apparatus is started.

Next, the data management unit in the slave OLU judges whether data registered on the optical disk in the master OLU can be read, and the data cannot be read 1107, and another data in the same optical disk is not read. It is determined whether or not the data can be read. If the data cannot be read, the optical disk may be broken.
Perform the action from.

If other data can be read from data registered on the optical disk in the master OLU, the data may have been erased or partially damaged. The data management unit in the OLU automatically starts copying the lost data from the optical disk in the master OLU to the master OLU 111.
0.

Next, the data management section in the slave OLU stores information on the registration date, registration time, and data capacity of the data registered on the optical disk in the slave OLU.
It is compared with the above data information in the master OLU to determine whether the management information is correct. Here, when the data of the management information in the master OLU is out of date or the data capacity is incorrect, the data management in the slave OLU is performed at 1112 because the optical disk data in the master OLU may be incorrect. The unit starts automatic recovery of the optical disk data in the master OLU that seems to be strange 1113.

Further, the data management unit in the slave OLU replaces the data registered on the optical disk in the master OLU and the data registered on the optical disk in the slave OLU with binary numbers, and compares each data. When the number of errors exceeds the set number, the data management unit of the slave OLU starts copying data of the optical disk data of the slave OLU with respect to the data on the optical disk in the master OLU in which the compare error has occurred. 1115. This completes the data restoration process when a data error occurs.

As described above, as shown in FIG.
Accessor controller ACC1102, which controls the loading / unloading of the optical disk in U1101, master O
An optical disk drive ODD 1103 for writing / reading data to / from the optical disk in the LU 1101, a master O
A network function unit 1104 for connecting a network to the LU 1101, a registration date and a registration time of data registered on an optical disc in the master OLU 1101,
When data capacity information and data are registered, the host 1
The data is automatically copied to the optical disk in the slave OLU 1107 independently of the master OLU 1101 irrespective of the data in the master OLU 1101. Has a data management unit 1105 for restoring lost data in the master OLU using data on the optical disk in the host. In performing data duplication, no operation is performed from the host 1106. It does not need to be performed and is used only for registering / searching data in the master OLU.

Further, a slave OLU1 for performing duplication is provided.
107 is a remote OLU 11
07, no host is connected and the slave OLU 11
In the same manner as the master OLU 1101, the ACC2
108, ODD 2109, network function unit 211
1. It has a data management unit 2110 and has a master OLU 110
1, the copy data of the data registered in the optical disk is stored in the slave OLU 11 without being aware of the host 1106.
By registering in the optical disk in 07, there is no need to perform a backup operation or backup operation on the optical disk to be backed up, and data can be automatically copied to a portable storage medium such as an optical disk. The data of the optical disk can be easily stored in a storage location outside the OLU.

Also, by having a data replication function inside the OLU, the master O
LU 1101 and slave OLU 1107 at a remote location
The data copy of the optical disk data in the master OLU can be performed only by having the data.

As described above, the present invention can take various embodiments as described in the configurations shown in FIGS. 1 to 9 and the detailed description related thereto. It may include those having various functions, functions and configurations. These various embodiments will be re-collected and described herein in the context of the problem to be solved in the prior art.

In the conventional data duplication, the data is duplicated by assembling an array configuration using a hard disk device such as a magnetic disk or a disk array. Also, in data duplication using an optical disk, when data registered in an optical disk in a master OLU is copied to a slave OLU to be backed up and backed up at the same time, backup is performed at the same time. In addition, the host issues a backup instruction to the optical disk of the slave OLU from the host to the optical disk of the master OLU, and performs data duplication while being aware of an operation error or an operation procedure of the backup operation. .

In the embodiment of the present invention, a master OLU for storing data from the host and a slave OLU for storing backup data of the data in the master OLU.
And a network for connecting the master OLU and the slave OLU via a network, in the optical disk library apparatus subsystem, when the optical disk data is duplicated, the master OLU stores therein the data registered in the optical disk. A data management unit that manages the management contents such as registration date, registration time, data capacity, etc., manages the name of the optical disk, and controls the data replication without the intervention of the host during the data replication operation to the slave OLU. ,
ODD for reading / writing optical disk in master OLU
And an ACC for controlling operations on the optical disc, such as loading / unloading of the optical disc and movement within the master OLU, and a network function unit for establishing a network connection.

The slave OLU is the master OLU.
It is installed in a location remote from the Internet and has four built-in functions having the same functions as the data management unit, ODD, ACC, and network function unit in the master OLU.

By connecting the two OLUs via a network, when registering data from the host to the master OLU, the data management unit in the master OLU automatically notifies the slave OLU to the slave OLU without the intervention of the host. By duplicating data, there is no need to learn the operation procedure of the backup operation, and no data corruption or the like due to an operation error is caused. Therefore, the operability of the backup can be improved, and the labor of the manual work of the backup can be saved. In addition, by using an optical disk, which is a highly portable storage medium, it is possible to easily store an optical disk on which data has been duplicated in another storage location.

As described above, according to the embodiment of the present invention,
The data input from the host without the user's consciousness is automatically performed from the master OLU, independently of the host, so that data input from the host is registered in the master OLU and then copied to the slave OLU. Thus, data can be duplicated.

Further, mainly by the function of the ACC,
Even when the storage medium of the backup data of the slave OLU is full, the optical disk medium is ejected from the slave OLU and can be easily moved to the storage location of the data medium, thereby improving operability and portability. I can do it.

Various embodiments according to the present invention having the basic structure having the above-described functions and functions will be specifically described below.

When an optical disk in the master OLU or the slave OLU suffers a failure such as reading failure or medium damage, the master OLU connected to the host breaks the optical disk with respect to the host and cannot copy data. After the replacement of the new optical disk with the failed master OLU is completed, the completion information is sent from the host to the master OLU, and thereafter, the OLU sub-unit having the function of automatically restoring the optical disk data is provided. system.

Further, an OLU subsystem having an operation means for a swapping operation in the master OLU without the intervention of the host when the optical disk fails.

Also, in the master OLU or in the slave OLU
If the data written on the optical disk in the unit is accidentally erased or data is lost due to garbled data, etc., the data of the OLU that is alive in the master OLU and slave OLU is deleted. OLU subsystem that has the function of automatically copying and restoring data on the optical disk.

Further, if the optical disk in the slave OLU is removed and inserted, and there is no optical disk with the name to be duplicated in the slave OLU at the time of data registration, the master OLU sends a warning message to the host, and the host sends a warning message. When the master OLU receives a message to the effect that an optical disk has been inserted into the slave OLU, the master OLU automatically copies data from the beginning when it finds an optical disk without a name in the slave OLU, when performing data replication from the beginning. OLU subsystem that has the function of copying data. At this time, when the extracted optical disk for data duplication is returned to the slave OLU, the data management unit in the master OLU finds the optical disk to be subjected to data duplication in the slave OLU by its name, and automatically executes the data duplication. OLU subsystem that has the function of performing duplication.

Further, a disk array device or a magnetic disk device is provided between the host and the master OLU, and data input from the host is temporarily registered in the disk array device or the magnetic disk device. An OL having a function as a backup device for copying data to the OLU or as a hierarchical storage device when the disk array becomes full.
U subsystem.

Further, an OLC having a function of managing data information of an optical disk in an ACC inside the OLU and a function of managing an optical disk and duplicating data by the ACC.
U subsystem.

Although not shown, the OLU subsystem performs an operation of performing automatic data replication independent of the host between the master OLU and the slave OLU simultaneously with data registration.

Further, the timing at which automatic data replication independent of the host is performed between the master OLU and the slave OLU is determined by setting a data replication start timer in the master OLU, and setting a time interval from the data registration. OLU subsystem with the function of replicating data from the master OLU during low nights.

An OLU subsystem having a function of automatically erasing data of an optical disk having the same name in a slave OLU, regardless of the host, when erasing optical disk data in the master OLU.

Further, the master OLU has a large number of ODDs, and has a drive used for data duplication and a drive used for search separately. A drive for data duplication is used when registering data, and a drive for search is used when searching. OLU subsystem that has a function that enables searching while using the same drive while data is being copied.

A data compare function is provided in the master OLU to enable a compare check (comparison check) between the optical disk data of the master OLU and the optical disk data of the slave OLU. When a data compare error occurs, the date is set. If the date is different, copy the data with the newer date.If the date is the same and the data capacity is incorrect, inform the host that the data is strange, and delete the data depending on which data is deleted. An OLU subsystem with a function to copy data to an OLU optical disk.

An OLU subsystem having a data input / retrieval function in the master OLU and a function of inputting, registering, retrieving data and duplicating data without requiring any host.

The slave OLU also has a host,
An OL that can input data from the slave OLU side and has the function of backing up each other's optical disks
U subsystem.

Further, without having a host on the master OLU side,
Connect the scanner directly to the master OLU, connect a keyboard and a small display for naming input data to the master OLU, input data from the scanner connected to the master OLU, and send data to the slave OLU. OLU subsystem that has a configuration for duplicating data.

The host, master OLU, and slave O
If the host determines that the optical disk in the master OLU has been destroyed or the data on the optical disk has been destroyed while performing a search or the like from the host, the optical disk in the slave OLU is automatically connected to the LU. A function to switch to data and prevent the search process from stopping, and when the restoration of the optical disk in the broken master OLU is completed, the master OLU is again transferred from the optical disk in the slave OLU.
OLU subsystem with the function of switching to U optical disk.

[0090]

As described above, according to the present invention, data is automatically copied from the master OLU irrespective of the host, so that the data is input from the host without the user's awareness. The data is registered on the optical disk in the master OLU, and then registered on the optical disk in the slave OLU, so that the data can be duplicated.

Even when the storage medium of the backup data of the slave OLU is full, the optical disk medium is ejected from the slave OLU and can be easily moved to the storage location of the data medium, so that the operability and portability can be improved. Can be improved.

[Brief description of the drawings]

FIG. 1 is an apparatus configuration diagram (a backup-only OLU configuration) of an OLU subsystem according to an embodiment of the present invention.

FIG. 2 is an apparatus configuration diagram (backup configuration by disk array connection) of an OLU subsystem according to an embodiment of the present invention.

FIG. 3 is an apparatus configuration diagram (OLU multiple connection configuration) of an OLU subsystem according to an embodiment of the present invention.

FIG. 4 is an apparatus configuration diagram (configuration using an accessor controller) of an OLU subsystem according to an embodiment of the present invention.

FIG. 5 is an apparatus configuration diagram (scanner connection configuration) of an OLU subsystem according to the embodiment of the present invention.

FIG. 6 is an apparatus configuration diagram (with a compare check function) of an OLU subsystem according to the embodiment of the present invention.

FIG. 7 is an apparatus configuration diagram (with a built-in registration / search function in the OLU) of the OLU subsystem according to the embodiment of the present invention.

FIG. 8 is an apparatus configuration diagram (master / slave OLU switching configuration) of an OLU subsystem according to an embodiment of the present invention.

FIG. 9 is an apparatus configuration diagram (with a data mutual replication function) of an OLU subsystem according to the embodiment of the present invention.

FIG. 10 is a flowchart showing an operation of a backup process according to the embodiment of the present invention.

FIG. 11 is a flowchart showing an operation of a backup process according to the embodiment of the present invention.

FIG. 12 is a diagram showing a flowchart illustrating data restoration when an error occurs in data according to the embodiment of the present invention.

FIG. 13 is a diagram showing a flowchart illustrating data restoration when an error occurs in data according to the embodiment of the present invention.

[Explanation of symbols]

101 Master OLU1 102 ACC1 103 ODD1 104 Network function unit 1 105 Data management unit 1 106 Host 1 107 Slave OLU1 108 ACC2 109 ODD2 110 Data management unit 2 111 Network function unit 2 112 Network 201 Master OLU 202 ACC3 203 ODD3 204 Network function unit 3 205 Data management unit 3 206 Host 207 Slave OLU 208 ACC4 209 ODD4 210 Network function unit 4 211 Data management unit 4 212 Disk array 213: Network 301: OLU
(1) 302: ACC5 303: ODD5 304: Network function unit 5 305: Data management unit 5 306: Host (1) 307: OLU
(2) 308 ACC6 309 ODD6 310 Network function unit 6 311 Data management unit 6 312 Host (2) 313 OLU
n-1 314 ACC7 315 ODD7 316 Network function unit 7 317 Data management unit 7 318 Host n-1 319 OLUn 320 ACC8 321 ODD8 322 Network function unit 8 323 Data management unit 8 324 Host n 325: Overall backup OLU 326: ACC9 327: ODD9 328: Network function unit 9 329: Data management unit 9 330: Network 401: Master O
LU2 402: ACC and data management unit 1 403: ODD1
0 404 Network function unit 10 405 Host 2 406 Slave OLU 2 407 ACC and data management unit 2 408 ODD 11 409 Network function unit 11 410 Network 501 Master O
LU3 502: ACC10 503: ODD1
2 504 Network function unit 12 505 Data management unit 10 506 Scanner 507 Slave OLU3 508 ACC11 509 ODD1
3 510: Network function unit 13 511: Data management unit 11 512: Network 601: Master O
LU4 602 ... ACC12 603 ... ODD1
4 604 Network function unit 14 605 Data management unit 12 606 Compare check function unit 607 Host 3 608 Slave OLU 4 609 ACC1
3 610 ODD 15 611 Network function unit 15 612 Data management unit 13 613 Network 701 Master OLU5 702 ACC1
4 703 ODD16 704 Network function unit 16 705 Data management unit 14 706 Registration / search function 707 Slave OLU5 708 ODD1
7 709 ACC15 710 Network function unit 17 711 Data management unit 15 712 Network 801 Master OLU6 802 ACC1
6 803 ODD 18 804 Network function unit 18 805 Data management unit 16 806 Host 4 807 Slave / master OLU 808 ODD 1
9 809 ACC17 810 Network function unit 19 811 Data management unit 17 812 Network 901 Master OLU7 902 ACC1
8 903 ODD 20 904 Network function unit 20 905 Data management unit 18 906 Host 5 907 Master OLU 8 908 ACC1
9 909 ODD 21 910 Data management unit 19 911 Network function unit 21 912 Host 6 913 Network

Claims (7)

[Claims] 1. A host, a master optical disk library device (hereinafter referred to as OLU) for storing data including image data or document data from the host, and a slave OLU for storing backup data of data in the master OLU. , The host and the master OLU
And a network for connecting the slave OLU to a network, wherein the master OLU has a registration date, a registration time, and a registration date of data registered in each optical disc. Data that manages the management contents including the data capacity, manages the names of the registered optical disks, and performs the data copy operation directly to the slave OLU through the network without passing through the host when registering the data from the host. A management unit, an optical disk drive (hereinafter referred to as ODD) for reading and writing data from and on an optical disk, and an accessor controller (hereinafter referred to as ACC) for controlling operations on the optical disk including insertion or ejection of the optical disk and movement in the master OLU. To make a network connection The slave OLU manages the contents of backup data and the name of the optical disk to be backed up, and communicates with the data management unit of the master OLU; , ACC, and a network function unit, the registration information about the data management content and the optical disc name in the data management unit of the master OLU, and the data management content and the optical disc name in the data management unit of the slave OLU. An optical disk library device subsystem, wherein information is transmitted between data management units without the intervention of a host so that registration information is made the same. 2. The optical disk library apparatus subsystem according to claim 1, wherein a data management unit of said slave OLU periodically checks data registered on an optical disk in said master OLU, and said slave OLU. If the data management section of the master OLU can extract data from the optical disk in the master OLU, it judges that there is no abnormality in the optical disk. If the data cannot be extracted, the data of the master OLU is inserted after inserting a new optical disk. The management department
An optical disk library device subsystem, wherein registration information on data management contents and an optical disk name is obtained from a data management unit of the slave OLU, registered in its own data management unit, and data is restored. 3. An OLU for storing data including image data or document data from the host.
A comprehensive backup OLU for storing backup data of the data in the OLU, the host and the OL
An optical disk library device subsystem including a U and a network for connecting the comprehensive backup OLU to a network, wherein the host and the OLU are provided in a plural number in a pair, and the comprehensive backup OLU can store a large number of optical disks. Each of the plurality of OLUs manages management contents including a registration date of data registered on each optical disc, a registration time of data, and a capacity of registered data, and an optical disc registered. A data management unit that manages the name of the host and, when registering data from the host, directly copies data to the comprehensive backup OLU through the network without passing through the host; ODD; ACC; A network function unit having a function for performing Kkuappu OLU manages the optical disk name that you want to back up and manage the contents of the backup data,
And a data management unit that communicates with the data management unit of the OLU, an ODD, an ACC, and a network function unit. The management information of data in the data management unit of the OLU and registration information on an optical disk name; An optical disk library apparatus, wherein information is transmitted between data management units without a host so that data management contents and registration information on an optical disk name in a data management unit of the comprehensive backup OLU are the same. sub-system. 4. The optical disk library device subsystem according to claim 1, wherein a data input to the master OLU is performed by using a scanner connected to the master OLU instead of the host connected to the master OLU. An optical disk library device subsystem, which is performed from the scanner. 5. The optical disk library device subsystem according to claim 1, wherein the host connected to the master OLU is not used.
An optical disk library device subsystem, wherein the master OLU has a data input function and a data search function. 6. The optical disk library device subsystem according to claim 1, wherein a host is also connected to the slave OLU so that data can be input to the slave OLU, and the optical disks of both OLUs are mutually connected. An optical disk library device subsystem, wherein data can be backed up to a computer. 7. The optical disk library device subsystem according to claim 1, wherein a master OLU and a slave OLU are provided in the master OLU.
And a data compare function unit for comparing the registered data with the contents of management of the data.