KR0168803B1 - Method and apparatus for driving a plurality of types of tapes in an all-electronic exchange - Google Patents

Abstract

1. Technical field to which the invention as described in the claims belongs: A technology for driving a tape so that various types of tapes such as MT, CT, DAT, etc. can be jointly used in an electronic exchanger.

2. The technical problem to be solved by the invention: According to the backup and dump data provided from the outside, the maintenance processor can control the SCSI adapter to drive only the MT, so when the other type of tape drive is installed, Could cause disability.

3. Summary of Solution of the Invention: Receives a control command for backing up or dumping data, detects a mounted tape type, configures control data for driving the mounted tape, and transmits the data to a tape drive device. Drive the tape.

4. Significant Uses of the Invention: Electron Exchanger

Description

Method and apparatus for driving a plurality of types of tapes in an all-electronic exchange

1 is a system configuration for managing data in a general electronic switch.

2 is a block diagram of a system for managing data in an electronic switch according to the present invention.

3 is a control flow chart for driving the type of mounting tape according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape drive apparatus for recording maintenance data in an electronic switch, and more particularly, to a tape drive method and apparatus for driving various types of tapes jointly.

In general, electronic exchanges use magnetic tape (MT) to store information to dump and back up billing statistics and performance files in the maintenance processor.

The general configuration of a system for managing data in such an electronic switch has the configuration as shown in FIG. Looking at the configuration of the data management system shown in FIG. 1, the HDD 14 generally includes a hard disk of high capacity and a driver for controlling the drive of the hard disk. The initial program, billing data and statistical data of are stored and recorded or read out according to the control of the SCSI adapter 12. The SCSI adapter 12 performs the control of the HDD 14 under the control of the maintenance processor 10. The maintenance processor 10 manages billing and statistical data generated at the exchange to perform control for writing or reading data to the HDD 14 and the MTU 16.

Other tapes such as CT (Cartridge Tape) and DAT (Digital Audio Tape) could not be used because the MTU can only be used for backup and storage of billing or statistical data in the electronic exchange having the above configuration. . Because the driving method of MT drive device, CT drive device and DAT drive device are all different, if you operate MT drive device in the exchanger and install CT drive device in the exchanger, the exchanger is connected to SCSI (Small Computer System Interface) cable. There is a problem in that all the drive can not be used because of holding in the CT drive.

Accordingly, an object of the present invention is to provide a method and apparatus for driving a plurality of types of tapes capable of dumping or backing up messages using various types of tapes in an exchange.

Another object of the present invention is to provide a plurality of types of tape driving methods and apparatuses capable of driving a disk regardless of whether a tape driving device is used in an exchanger.

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

2 is a block diagram of a system for managing data in an electronic switchgear according to the present invention, which has the same configuration as in FIG. ) And DATU 20 can be mounted and used.

3 is a control flow chart for driving the type of mounting tape according to the present invention.

The operation of the preferred embodiment of the present invention will be described in detail with reference to FIGS. 2 and 3 described above.

In order to operate the tape drive mounted on the maintenance processor of the exchanger, each tape drive, for example, the CTU (Cartridge Tape Unit) 18 and the DATU (Digital Audio Tape Unit) 20, is applied in advance by the MMC. The tape drive system should be registered. When mounting one of the MT, CT, DAT in this way, the operation of driving the tape drive device in the maintenance processor 10 after registering the tape mounting state in Figure 3, the maintenance processor 10 from the user If a backup or dump command is input, the R_TUD_STS area of the database is read in step 201 and the process proceeds to step 202. In step 202, the maintenance processor 10 searches for the type of tape drive currently mounted. Here, the tape drive device is set to 0: CT, 1: MT, 2: DAT, and the shape of the tape drive device is determined by searching for it. In this case, the mounted tape drive device is MT, and the process proceeds to step 204 to create a CDB (Command Descriptor Block) table to initialize and use the currently mounted tape drive device MTU (16). For example, set RAMptr [3] = 0x08 and RAMptr [10] = 0x00, the corresponding bits of the CDB table. 0x08 is the initial command of the tape drive, and 0x00 is the variable mode of the tape drive.

However, if the tape drive device is CT / DAT in step 202, the process proceeds to step 203 so that the CTU 18 or DATU 20, which is the currently installed tape drive device, can be initialized and used so that the CDB (Command Descriptor Block) can be used. Create a table. For example, set RAMptr [3] = 0x08 / * CMD * / and RAMptr [10] = 0x02 / * Fixed Mode * /, which are the corresponding bits of the CDB table. After creating the CDB table according to the type of the driving device, the process proceeds to step 205 and the maintenance processor 10 constructs a CPB table which is information to be passed to the SCSI adapter 12. The CPB has a start address pointer of an internal memory to record I.D return data of a disc to be recorded, information indicating a side of the disc, and information specifying a protocol with the SCSI adapter 12. When the configuration of the CPB table is completed, in step 206, the maintenance processor 10 and the SCSI adapter 12 performs the protocol, and transmits the information of the configured CDB, CPB table to the dual port of the SCSI adapter 12 Recording is made in the CPB area of the memory and start information is recorded in the RCB area of the SCSI adapter 12. When the recording of the transmission information is finished, the SCSI adapter 12 determines whether the table information received in step 207 matches the set format. If it is determined that there is no match, the SCSI adapter 12 transmits data to the maintenance processor 10 requesting retransmission. However, when the received table information matches the set format, the SCSI adapter 12 transmits the device I.D to the currently mounted tape driving apparatus by referring to the information recorded in the CPB table. Thereafter, in step 208, the SCSI adapter 12 controls the currently mounted tape driving apparatus through various phases (PHASE) in accordance with the SCSI protocol. The transmission in accordance with the protocol consists of a bus standby step, an adjustment step, a selection (non-selection) step, and an information transmission step (command step, data output step, message output step, status step, data input step, message input step). . In operation 209, the currently mounted tape driving apparatus performs a recording or reading command according to the received information. When the command processing is completed, the currently mounted tape drive unit transmits a state value corresponding to the command execution processing result to the SCSI adapter 12. When the command value processing result is received, the SCSI adapter 12 analyzes the state value in step 210 and searches whether an error is detected. If the error is not detected (0x00), the process proceeds to step 211, where the normal processing result is converted into data and transmitted to the maintenance processor 10, and the service ends.

However, if an error is detected in step 210 (0x02), the SCSI adapter 12 configures a reflex sensor command for identifying an abnormal cause of the corresponding disk in step 212. In step 213, the configured request sense command is transmitted to the currently mounted tape driving apparatus. Then, in step 214, the SCSI adapter 12 receives the sense data of 14 bytes according to the result performed from the currently mounted tape drive. When receiving the sense data according to the execution result, the SCSI adapter 12 checks the third byte of the received data in step 215 and analyzes whether an error is detected. If the error is not detected, the normal result data is transmitted to the maintenance processor 10 and the service is terminated. However, when an error is detected in step 215, the SCSI adapter 12 transmits error data to the maintenance processor 10 in step 216. The error data includes a device name, a location of a block in which an error occurs, and logical address information in which an error occurs.

As described above, the present invention makes it possible to use the MT, CT, and DAT driving devices in all electronic exchangers in common, thereby preventing system down when mounting a tape driving device other than MT, and also using CT or DAT. The data recording capacity can be increased, and the volume of the tape drive can be reduced.

Claims (3)

An all-electronic exchanger comprising a tape drive for backing up and dumping initial programs, billing data, and statistical data, a SCSI adapter for controlling the tape drive, and a maintenance processor for maintaining data stored on the disk, Receiving a control command for backing up or dumping data, detecting a mounted tape shape, detecting the mounted tape shape, and configuring control data for driving the mounted tape and transmitting the same to the tape driving device A method for driving a plurality of types of tapes in an all-electronic exchanger, characterized in that the process of driving the mounted tape. The method of claim 1, wherein the mounted tape is one of a magnetic tape (MT), a cartridge tape (CT), and a digital audio tape (DAT). An all-electronic exchanger equipped with a maintenance processor, comprising a high-capacity hard disk and a driver for controlling the operation of the hard disk, controls the SCSI adapter by storing initial programs, charging data, and statistical data of the all-electronic exchange. A hard disk driver for recording or reading data according to the present invention, a SCSI adapter for controlling the hard disk driver under the control of the maintenance processor, and a magnetic tape unit connected to the SCSI adapter for driving a magnetic tape. And a digital audio tape unit connected to the SCSI adapter for driving the digital audio tape, and managing billing and statistical data generated from the electronic switchboard, wherein the hard disk driver, the magnetic tape unit, and the digital audio are managed. Apparatus characterized in that the configuration data to the tape recording unit or a maintenance processor which performs a control for reading.