CN201477576U - Fast automatic backup device for notebook computer - Google Patents

Abstract

The utility model discloses a fast automatic backup device for a notebook computer. The embedded CPU is respectively connected with one end of the hard disk interface, the wireless local area network interface and the USB interface, and the other end of the hard disk interface is connected with the hard disk. The utility model improves the backup mode of the mobile hard disk, realizes automatic, fast and safe data backup by way of incremental backup, can reduce user intervention, and helps to quickly recover hard disk data when the notebook computer is lost or the hard disk is damaged , to reduce user losses. Set the disk filter driver on the laptop, and record the sector number of the modified sector into the sector modification table. The backup management program searches for whether there is a backup device described in the utility model, and quickly backs up disk data. The backup device stores a bootable DOS operating system and a software for automatically recovering the hard disk, which can quickly restore the hard disk data of the notebook computer.

Description

Fast automatic backup device for notebook computer

technical field

The utility model relates to a computer storage device, in particular to a fast automatic backup device for a notebook computer.

Background technique

Along with the maturity of computer technology, notebook computer is more and more popular, and many white-collars carry notebook computer. The data stored in the notebook computer, especially the relationship customer information, research and development information, and sensitive data, will cause huge losses due to machine damage and loss of the notebook computer. It has been reported that a lost laptop costs the company an average of $50,000. In order to reduce the weight of the notebook computer, the structure itself is light and handy, and because it is often moved, the hard disk of the notebook computer is also easily damaged. Data backup technology can greatly reduce losses caused by loss of laptops and damage to hard drives. Currently, the commonly used backup methods are as follows:

1) Backup between different hard disk partitions of this machine. Automatic backup can be realized with the help of some software, but this method loses data when the hard disk is damaged or the machine is lost.

2) Mobile hard disk backup. Applying this method to back up data requires routine maintenance, which is time-consuming and boring for users, so it is easy to forget. If the backup of the entire hard disk will take a long time. Taking a 320G-byte hard disk as an example, based on 15M bytes per second, the backup of the entire hard disk takes 5.9 hours.

3) network storage backup (email, FTP, etc.); the problem of this method is that the network storage space is limited, the network transmission rate is lower than the hard disk transmission rate, and there are potential safety hazards.

Contents of the invention

The purpose of the utility model is to provide a fast automatic backup device for a notebook computer, which is an improvement to the backup of a mobile hard disk, and realizes automatic, fast and safe data backup in the form of incremental backup without manual operation. When the notebook computer is unfortunately lost or the hard disk is damaged, the utility model can quickly recover the hard disk data.

The technical scheme that the utility model adopts is:

The utility model comprises an embedded CPU, a hard disk interface, a hard disk, a wireless local area network interface and a USB interface; the embedded CPU is respectively connected with one end of the hard disk interface, the wireless local area network interface and the USB interface, and the other end of the hard disk interface is connected with the hard disk.

The model of the embedded CPU is ARM9 chip S3C2410, a part of the bus is drawn out to form a hard disk interface, and the pins of the USB interface inside the S3C2410 are drawn out to form a USB interface.

The hard disk is a hard disk with an IDE interface.

The models of the MAC layer and transport layer chips of the wireless local area network interface are RT2571W and RT2528 respectively.

Compared with the background technology, the utility model has the beneficial effects of:

The utility model improves the backup mode of the mobile hard disk, realizes automatic, fast and safe data backup in the incremental backup mode, can reduce the user's intervention, and helps to quickly restore the hard disk data when the notebook computer is lost or the hard disk is damaged. , to reduce user loss. Set the disk filter driver on the laptop, and record the sector number of the modified sector into the sector modification table. The backup management program searches for whether there is a backup device described in the utility model, and quickly backs up disk data. The backup device stores a bootable DOS operating system and an automatic hard disk recovery software, which can quickly restore the hard disk data of the notebook computer.

Description of drawings

Fig. 1 is a hardware block diagram of a backup device.

Figure 2 is a schematic diagram of the IDE interface.

Figure 3 is a schematic diagram of the USB interface.

Figure 4 is a model diagram of the disk driver.

Fig. 5 is a schematic diagram of a method for using a sector modification table.

Figure 6 is a flow chart of fast backup.

In the figure: 1. Embedded CPU, 2. Hard disk interface, 3. Hard disk, 4. Wireless network LAN interface, 5. USB interface, 6. Disk filter driver, 7. Sector modification table.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

As shown in Figure 1, the utility model comprises an embedded CPU 1, hard disk interface 2, hard disk 3, wireless local area network interface 4 and USB interface 5; Embedded CPU 1 is respectively connected with an end of hard disk interface 2, wireless local area network interface 4 and USB The interface 5 is connected, and the other end of the hard disk interface 2 is connected to the hard disk 3 .

As shown in Figure 1, the notebook computer fast automatic backup device disclosed by the utility model is a special-purpose mobile hard disk, built-in an embedded CPU 1, links to each other by hard disk interface 2 and a hard disk 3, and hard disk interface selects IDE interface for use. The automatic backup device has a wireless network local area network interface 4 and a USB interface 5, and can exchange data with a notebook computer through these two interfaces. The hard disk 3 has two partitions, one of which (about 128M) is formatted as the startup disk of the notebook computer, and stores a bootable DOS operating system and a software for automatically recovering the hard disk. Another partition is used to back up the laptop's hard drive. Therefore, the automatic backup device can be used as a startup disk of the notebook computer, and a DOS operating system can be started by inserting the USB interface 5 into the notebook computer.

The model of the embedded CPU 1 is ARM9 chip S3C2410, and a part of the bus is led out to form the hard disk interface 2, as shown in Figure 2. The hard disk 3 can be a common IDE interface hard disk. The models of the MAC layer and transport layer chips of the wireless LAN interface 4 are RT2571W and RT2528 respectively. There is a USB peripheral interface inside the S3C2410, as shown in Figure 3, it can be used as the USB interface 5 only by leading out the corresponding pins.

On a PC, the operating system saves various data in the form of files. The hard disk is an important medium for storing files, and the reading and writing of files on the hard disk is finally converted into reading and writing of disk sectors. As shown in Figure 4, the application needs to call the file driver, and the file driver calls the disk driver to read and write the disk. In order to improve the backup efficiency and maintain better synchronization between the notebook computer's disk and the backup, a disk filter driver 6 is developed, which is drawn with a double line in Figure 4. The disk filter driver 6 is located between the file driver and the disk driver, and can intercept the communication between the file driver and the disk driver.

The disk filter driver 6 promptly finds out a larger free disk block in the disk when it is used for the first time, as the space for the storage sector modification table 7. Every time the disk is written, the disk filter driver will record the modified disk sector number and store this sector number in the sector modification table. As shown in Figure 5, if sectors 1001 and 1002 are modified, the two items 1001 and 1002 are added to the sector modification table.

The backup management program runs on the laptop, and besides the manual backup and manual recovery functions that common backup software has, it also has an automatic backup function. When using the backup device for the first time, the data of the entire disk is written to the backup device, that is, full backup, and a mirror image of the hard disk of the notebook computer is generated on the backup device. After the image is formed, the incremental backup method is used, that is, only the modified sectors are backed up. The backup management program searches whether there is a backup device described in the utility model in the wireless local area network and each USB interface at regular intervals. If there is an automatic backup device, update the corresponding disk sector in the automatic backup device according to the read sector modification table, and delete the corresponding entry in the sector modification table 7, as shown in FIG. 6 . After the update is completed, multiple methods are used to detect whether the disk data in the automatic backup device and the disk in the notebook computer are strictly synchronized. If there is any asynchronous phenomenon, the data in the backup device will be updated in time.

The fast automatic backup device described in the utility model mainly has three steps when backing up the hard disk of a notebook computer:

1) record the modified hard disk sector by the disk filter driver program 6;

2) The backup management program searches for an automatic backup device;

3) Transfer data through wireless LAN or USB interface to realize fast backup.

There are three main steps in the quick recovery process:

1) When the laptop starts, find the automatic backup device in the USB interface.

2) start the DOS operating system with the automatic backup device as a boot disk;

3) The automatic recovery software quickly copies all the data on the backup device to the laptop.

The automatic backup device described in the utility model can be placed in a fixed place, such as the home or office of the user of the notebook computer. Quickly write to a backup device. When there is no wireless local area network, as long as the USB interface of the backup device is plugged into the notebook computer, the data can also be written to the backup device. The automatic backup device described in the utility model is not limited to a specific operating system and a specific file system.

Claims (4)

1. the fast automatic back-up device of notebook computer is characterized in that: comprise an embedded type CPU (1), hard-disk interface (2), hard disk (3), wireless lan interfaces (4) and USB interface (5); Embedded type CPU (1) links to each other with an end, wireless lan interfaces (4) and the USB interface (5) of hard-disk interface (2) respectively, and the other end of hard-disk interface (2) links to each other with hard disk (3).

2. the fast automatic back-up device of a kind of notebook computer according to claim 1, it is characterized in that: the model of described embedded type CPU (1) is ARM9 chip S3C2410, a part of bus is drawn, promptly form hard-disk interface (2), the pin of the USB interface of S3C2410 inside is drawn, form USB interface (5).

3. the fast automatic back-up device of a kind of notebook computer according to claim 1 is characterized in that: described hard disk (3) is selected the ide interface hard disk for use.

4. the fast automatic back-up device of a kind of notebook computer according to claim 1 is characterized in that: the MAC layer of described wireless lan interfaces (4) and transport layer chip model are respectively RT2571W and RT2528.

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