JPH0535415A - Information storage device - Google Patents

Abstract

PURPOSE:To transfer and copy data between disk drives at a high speed by controlling simultaneously the two flexible disk drives with one flexible disk controller. CONSTITUTION:This information storage device is provided with one flexible disk controller 13 which controls two flexible disk drivers 15 and 16 at the same time and a buffer 24 wherein the data read out of the copy-destination flexible disk drive by the flexible disk controller 13 are temporarily held. This disk controller 13 rotates the two flexible disk drivers 15 and 16 at the same speed simultaneously and reads the data out of the copy-source flexible disk cartridge into the buffer of the flexible disk controller 13 in byte units. Then the flexible disk controller 13 writes the data in the buffer 14 into the copy- destination flexible disk drivers 15 or 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information storage device used in a computer system having two flexible disk drives.

[0002]

2. Description of the Related Art In a conventional information storage device, a flexible disk controller performs a copy method between flexible disks by alternately controlling a copy destination and a copy source flexible disk. The copy program reads data from the copy source flexible disk in sector units and writes the data on the memory. Subsequently, the copy program has a method of writing the data expanded in the memory to the copy destination flexible disk.

[0003]

In the above-mentioned conventional information storage device, in the flexible disk-to-flexible disk copy method, since flexible disk control is performed alternately between the copy source and the copy destination, the data read and write times are different. Will be needed.

Also, due to the difference in format depending on the operating system used, the copy speed becomes slower or the type of disc that can be copied is limited depending on the size of the sector.

[0005]

An information storage device of the present invention comprises at least two first and second disk drives for storing data, and the first and second disk drives according to instructions designated by an input / output device. A controller for controlling data transfer between two disk drives, and simultaneously writes the data read from the first disk drive in bytes to the buffer in the controller and the second disk drive. To do.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a flow chart for explaining the operation of this embodiment.

In this embodiment, in FIG. 1, one flexible disk controller 13 for controlling two flexible disk drives 15 and 16 at the same time and data read from the flexible disk drive by the flexible disk controller 13 are temporarily stored. The flexible disk controller 13 simultaneously rotates two flexible disk drives 15 and 16 at the same speed to store data in a byte unit from a flexible disk cartridge as a copy source. It is read into the buffer 14 in the controller. Subsequently, the flexible disk controller 13 is configured to write the data in the buffer to the copy destination flexible disk drive.

Next, the operation of this embodiment will be described. C
The PU 12 receives the command from the input / output device 11 and sends the command to the flexible disk controller 13 (S2). Upon receiving the command, the flexible disk controller 13 rotates the copy source and copy destination flexible disk drives 15 and 16 (S3). The flexible disk controller 13 reads data in byte units from the copy source flexible disk drive 14 (S4), and writes the data in the buffer 14 in the flexible disk controller (S5). continue,
The flexible disk controller 13 writes the data of the buffer 14 in the flexible disk controller to the copy destination flexible disk drive 16 (S6).

At the end of the copy process or when an abnormality occurs during the process (S7), the flexible disk controller 1
3 notifies the CPU 12 of the result, and the CPU 12 displays the result on the input / output device 11 (S8).

[0010]

As described above, according to the present invention, one flexible disk controller controls two flexible disks at the same time, and the data read from the copy source flexible disk is written into the buffer in the flexible disk controller. At the same time, by writing the data to the copy destination flexible disk, the data can be transferred at high speed between the disk drives and copied.

Further, since copying is performed in byte units, it is possible to perform copying without being aware of the flexible disk format format that differs depending on the operating system or the like.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the present embodiment.

[Explanation of symbols]

11 Input / Output Device 12 CPU 13 Flexible Disk Controller 14 Buffer in Flexible Disk Controller 15 Flexible Disk Drive as Copy Source 16 Flexible Disk Drive as Copy Destination

Claims (1)

Claim: What is claimed is: 1. At least two first and second disk drives for storing data, and between the first and second disk drives according to a command specified by an input / output device. A controller for controlling data transfer,
An information storage device, characterized in that data read from the disk drive in units of bytes is simultaneously written to a buffer in the controller and the second disk drive.