JPH02207356A - Information processor monitoring mechanism - Google Patents

Abstract

PURPOSE:To heighten reliability for backup data by confirming the normalcy of data by making a backup device perform write and readout operations periodically. CONSTITUTION:A timing part 21 starts up a write part 22 after the lapse of time decided in advance, and the write part 22, after receiving known data with constant length from an information processor 10 and storing it in a write data storage part 23 once, writes it on the backup device 30, and starts up a readout part 24. The readout part 24 reads out written data from the backup device 30, and stores it in a readout storage part 25, and starts up a comparison part 26. The comparison part 26 compares the content of the write data storage part 23 with that of the readout data storage part 24, and reports noncoincidence between them when it occurs to the information processor 10. In such a way, the reliability for backup can be secured.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an information processing device, and in particular to a monitoring mechanism for an information processing device to ensure reliability when backing up the contents of a file device. It is related to.

[Conventional technology]

Conventionally, this type of information processing equipment is equipped with a backup device such as a cartridge magnetic tape device for backing up the file device, and the contents of the file device are periodically written to the backup device, and the contents of the file device are written to the backup device, and the contents of the file device are written to the written media, that is, the magnetic tape device. It has been common practice to save tape cartridges and the like in case the contents of the file device are destroyed.

[Problem to be solved by the invention]

In the above-described conventional method for backing up a file device in an information processing device, the contents of the file device written to the backup device are generally not read out again and checked for comparison in order to check whether the contents have been written correctly. The main reason for this is that the time required for the comparison check is too long to be ignored. On the other hand, a backup device is typically used only once a day for a short period of time, or once a month for a long period of time.

Furthermore, since the device is not used for a long period of time, even if a failure occurs, it is not detected immediately. Furthermore, although some failures cannot be detected by checking during writing, there may also be failures in which incorrect data is written or no data is written at all. There is a problem that if a backup is performed in such a situation, the backup becomes meaningless.

[Means to solve the problem]

The monitoring mechanism of the information processing device of the present invention includes a timer for measuring a predetermined time, and a writing device for writing known data of a certain length into an external backup device according to instructions from the timer. , comprising a reading means for reading the data written by the writing means, and a comparing means for comparing the data written by the writing means and the data read by the reading means,
This is to ensure backup reliability.

[Effect]

In the present invention, the normality of data is ensured by periodically performing write and read operations on the backup device.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

The figure is a block diagram showing one embodiment of the present invention.

In the figure, 10 is an information processing device, a file device 15 and a backup device 30 are connected to this information processing device 10, and a monitoring mechanism 20 is located between the information processing device 10 and the backup device 30.

Reference numeral 21 in the monitoring mechanism 20 is a timer, and the timer 21 constitutes a timer that measures a predetermined time. Reference numeral 22 denotes a writing section, and this writing section 22 constitutes a writing means for writing known data of a fixed length into an external backup device according to instructions from the time measuring means. 23 is a write data storage section, and 24 is a reading section, and this reading section 24 constitutes a reading means for reading the data written by the writing means. 25 is a read data storage section; 26 is a comparison section which inputs the contents of the write data storage section 23 and the contents of the read data storage section 25; this comparison section 26 compares the data written by the writing means with the reading means; This constitutes a comparison means for comparing the data read out by.

The write data storage unit 23 is arranged to connect the information processing device 10 and the backup device 30. The same applies to the read data storage section 25. The comparison unit 26 also includes the contents of the write data storage unit 23 and the read data storage unit 25.
The contents of are provided as input.

Note that dashed arrows represent control signals, and solid arrows represent data flows.

Next, the operation of the embodiment shown in this figure will be explained.

First, in a normal backup operation, the contents of the file device 15 are written directly to the backup device 30. (Indicated by Q in the figure) Next, when entering the 1 monitoring state, the timer section 21 starts measuring time,
When a predetermined time has elapsed (this time may vary depending on the operation mode, the time is set according to the operation), the writing unit 22 is activated.

The writing unit 22 receives and receives known data of a fixed length designated by the information processing device 10 from the information processing device 10.1.
After this is first stored in the write data storage unit 23, it is written to the pickup device 30 and the reading unit 24 is activated. The reading unit 24 reads data previously written by the writing unit 22 from the backup device 30, stores it in the read data storage unit 25, and activates the comparison unit 26.

The comparison unit 26 then compares the contents of the write data storage unit 23 and the read data storage unit 25, and reports the information processing device 10 if there is a discrepancy.

In addition to the above data comparison, the writing unit 22 performs the following operations during writing.
The reading unit 24 is connected to the backup device 3 at the time of reading.
0 abnormality check is also performed, and if there is an abnormality, the information processing unit [
10 will be reported.

〔Effect of the invention〕

As explained above, according to the present invention, failures in the backup device can be discovered in advance by regularly performing write and read operations on the backup device to check the normality of data. Therefore, it has the effect of increasing the reliability of valuable backup data.

[Brief explanation of the drawing]

The figure is a block diagram showing one embodiment of the present invention. DESCRIPTION OF SYMBOLS 10... Information processing device, 15... File device, 20... Monitoring mechanism, 21... e Time measurement unit, 22...
...Writing section, 23...Writing data storage section, 24.
...reading section, 25.e.Φ readout data storage section, 26.
... Comparison section, 30.9... Backup device.

Claims (1)

[Claims] A clock means for measuring a predetermined time; a writing means for writing known data of a fixed length into an external backup device according to instructions from the clock means; and a comparison means for comparing the data written by the writing means and the data read by the reading means, and the reliability of the backup can be ensured. A monitoring mechanism for an information processing device, characterized in that: