On data backup and recovery of SPC exchange

2022-10-02
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Brief discussion on data backup and recovery of SPC exchange

Abstract: This paper describes the data backup and recovery of SPC exchange in communication switching network in detail, which has certain practical significance for data security in the network

key words: SPC exchange data backup data recovery Untitled Document Zhangjiakou power supply company's communication exchange network includes Harris administrative SPC exchange and md110/d dispatching SPC exchange. In view of the particularity of the power industry, if there is no backup in advance after data error or loss, it is not only difficult, but also very unreliable, and sometimes it is impossible to restore data at all. There must be a set of effective backup management measures. These two models also account for the vast majority of the power communication switching networks in North China. The following is the steps and precautions of how to back up the data of these two types of switching devices according to the author's experience in daily maintenance. 1. Data backup and recovery of Harris digital SPC Exchange (1) data backup: copy the database, miscellaneous files or ACD statistics to other storage media from the public equipment rack currently activated by the exchange. Miscellaneous documents include: dedicated abbreviated dialing numbers, manual call forwarding, activated call forwarding groups, etc. Use the system maintenance terminal to perform online operation, enter the user name and password, select the currently used database, enter the EDT (configuration editor) program, and enter the UTI (utility) command under the program. At this time, you can use the BAC (backup) command to back up the data. The specific operations are as follows: type "ctrl+c" command; Open the maintenance terminal and go online. User name? Admin, enter; Enter the user name "admin". Password...? * * * *, enter; Enter the password. ADMIN…? EDT, enter; Enter the database program. EDT…? UTI, enter; Enter the UTI program. UTI…? BAC, enter; Enter the backup program. Reserve [DB]? DB, enter; Indicates that the system stores the database. At this time, there are three options: dB (database), MIS (Miscellaneous documents) and ACD (ACD Statistics). In this example, the standby database is selected. Stored database? A. Enter; Enter the name of the storage database a Insert the empty disk marked (1/*) into the rack and press enter; The system prompts the user to put in the disk, "*" indicates the total number of disks required during this backup operation. It should be pointed out that if there are other contents on the disk, the system will erase the information on the disk during the process of copying the file to the disk Save database a; Tips for the storage process. The system will prompt the user to insert the next disk when the disk is full until the storage is completed. UTI…? Exi, enter; Return to the previous program. EDT…? Exi, enter; Return to the highest level program, and the system will prompt "you are offline". The backup operation is completed. (2) Restore the stored data: use res (restore) command to restore the database Miscellaneous files or ACD statistics are copied from the backup floppy disk to the active public device. "We plan to pass through the hard disk of the project rack this time. The specific operations are as follows: enter the UTI program after online (the steps are the same as" data backup "). The system prompts: uti...? res, enter; enter the restore data command res (restore). Restore [DB]...? dB, enter; still take the restore DB as an example. It will be marked with (1/*) Insert the empty disk into the rack and press enter. After that, put the disks in sequence until the recovery is completed. Then exit. 2. Data backup and recovery of MD110 digital program-controlled dispatching switch (1) data backup: after the data of MD110 switch is changed, it will not be written to the hard disk immediately, but stored by the storage unit MEU. Therefore, when making data backup of this type of switch, the following three steps should be followed: MEU data → switch hard disk unit qdlu → maintenance terminal hard disk → floppy disk. The following are explained separately: step one, this proves that lightweight has important positive significance for greenhouse gas emission reduction in the automotive industry. Dump operation. There are two dump operations of the switch, which can be performed separately as needed. It should be pointed out here that the qdlu hard disk unit of the switch has the original program file "volume" and the backup loading file "relvol" containing program code and user data. ① System dump: all program units and all data running in the MEU of the switch are transferred to the hard disk of the switch. The process is as follows: - execute EQ hard disk maintenance program- Point the file pointer in the qdlu hard disk unit to the relvol file, which should be new compared with the traditional metal solution or can be deleted- Exit EQ program, execute Fiol online operation program, and input instructions- FAVOE:VOL=RELVOL; - FATAE:CTU=0; - FASTI:CTU=0; (delete the old file with the command) -fat:vol=relvol, tape=0, ctu=0- FAVOI:VOL=RELVOL,TAPE=0; (create a new backup file) -catii:date=, time=- Casii:stn=sun (establish clock date and workstation flag)- ALREI; - Ftrei (clear warning flag)- Dusyi (input command to dump); After that, the system will transfer the new system files into the hard disk unit of the switch. ② Data dump: after the maintenance personnel modify the switch data, the modified content is transferred to the hard disk unit of the switch. The process is as follows: -alrei- Ftrei (clear warning flag)- DUUDI:DUMP=ALL; Or dump=changes{enter the command and parameters to dump. The former (all) is dump

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