What is the Best Computer Back Up System?

Data backup refers to copying the data of the entire system or a part of key data from the storage device of the main computer system to other storage by a certain method in order to prevent data loss due to human factors or accidental reasons such as operating errors, system failures, etc. Equipment process.

With the rapid development of network technology and the increasing popularity of the network, the most fundamental purpose of building a network is to transmit information more conveniently. If the security of the information cannot be guaranteed, the large investment in the network will also lose its original meaning. The importance of data as the core of information applications is self-evident. Therefore, when setting up a network information system, people will back up important data so that when the system is damaged, they can restore the data as quickly as possible to ensure the high availability of the system. ^[1]

Different backup methods have different effects, mainly in terms of performance, degree of automation, degree of impact on existing system applications, management, and scalability. Common data backup systems mainly include Host-Based, LAN-Based, and SAN-based LAN-Free, Server-Free and other structures. ^[1]

Data backup system system performance analysis

A complete professional data backup system, including backup hardware and backup management software. Excellent backup software is the basis for completing backups, which greatly affects the efficiency of backups. Generally speaking, professional data backup systems usually have the following characteristics: centralized management of backup jobs; cross-platform backup and recovery; automated backup and recovery; backup and recovery of large databases; system disaster recovery; save system resources And network bandwidth; backup device and media management; security and reliability. ^[1]

Data backup system software system composition

The network-based data backup software is designed with a multi-layer architecture. The functional modules generally include: system management interface, backup server, media server, backup client, and various application agents. These functional modules are relatively independent. The software system structure is shown in Figure 5. The functions of each module of the software system are as follows: ^[1]

1. The system management interface is mainly used to display and configure backup job information, and to view backup diary, backup process and other information in real time.

2. The backup server is mainly responsible for scheduling and execution of backup jobs, managing storage media and storage devices, generating backup logs, and issuing alerts to the management interface.

3. The backup client is installed on the application server that needs to be backed up, executes the backup server program and queries the remote server and workstation, so that the backup server can access the workstation's directory and drive. Specifically perform file system backup tasks for servers and workstations, perform backup data compression and recovery data decompression functions, and communicate with application agents and transfer and restore data.

4. The application agent and the backup client are installed on the same application server. The main functions include: obtaining the data to be backed up through the backup interface of the data source, restoring data through the backup interface of the data source, communicating with the backup client and accepting Resume instruction and data flow.

5. The media server mainly implements the reading and writing of backup media, accepts backup data, and writes to storage devices, such as tapes, hard disks, and optical disks. When data is restored, the data is read from the backup medium and sent to the backup client.