With the advancement of China's informationization process, information security issues have become increasingly prominent, and information security issues need to be resolved. Due to its particularity, archive information belongs to an important field of information security, and the secure storage of archive information is an important part of the realization of archive information security. As an emerging means of information storage, file-level discs have their own unique advantages in addition to the features of low cost, flexibility, versatility, high capacity and high reliability of optical storage technology, with their high storage quality and long storage. Life expectancy meets the requirements of modern information storage and provides strong support for information security. As an important storage medium, file-level discs provide an effective way to solve the current file information storage security problem.
First, the importance of archival information
The security threat of external factors and the vulnerability of file information itself make file information security more important. As a record of all aspects of social activities, archival information plays an irreplaceable role in inheriting historical culture, recording social reality, and retrospecting facts. Studying the security issues of file information protection is of great significance for the development of archives theory research, broadening the field of archives research, improving the archives information security system, prospering the archives academic research atmosphere, and promoting the healthy and sustainable development of archives information construction.
Due to the shortcomings of traditional carriers, the scale of electronic file applications in the information age has expanded rapidly. Electronic file information has broken the limitations of time and space. Computers are used to organize and manage files, and to disseminate, share and use files through the Internet. The times have given the archives many new features and new problems. In the age of the Internet, the storage of archives is vulnerable to a variety of unintentional or intentional attacks. Therefore, how to strengthen the security of archives information has become the primary task of archives work.
Second, the characteristics of file-level discs
The file-level disc is different from the ordinary disc. It is the application of the disc storage technology in the archives field. The file-level disc has strict regulations on the selection of materials, processing technology and factory quality inspection to ensure the quality of the disc. Therefore, file-level discs have their own unique attributes and technical indicators. According to the "Technical Requirements and Application Specifications for Electronic Document Filing Discs", file-level discs should be used when electronic files are archived using CD-R/DVD±R. Only CDs that meet the above technical standards can be called file-level discs and used for file information storage. When selecting the file information storage medium, the storage disc should be strictly tested and audited according to the above standards to ensure the quality of the disc and meet the long-term storage requirements of the file.
The reason why the file-level disc is selected as the archived disc of the electronic file is mainly based on the following reasons: (1) The file-level disc implements strict quality standards in terms of material, manufacturing process, quality inspection, etc., which is much higher than the ordinary disc, thus ensuring High quality features of storage media. (2) The file-level CD-ROM products meet the requirements for filing electronic documents in the Technical Requirements and Application Specifications for Electronic Document Filing Discs formulated by the National Archives in 2008. There are not many types of file-level discs, but compared with ordinary discs, it pays more attention to the "persistence" of burning data rather than "easily recordable", and its storage quality requirements are more stringent; its product manufacturers must bear responsibility for product quality. Traceability; and the product must have a batch inspection report issued by a third-party independent authority. (3) File-level discs are the new revolution of archival archives. It provides a high-quality carrier medium for the digital access and protection of countless important documents. With the popularization of its application, the specification requirements in many aspects such as use, preservation and data monitoring and migration are also constantly updated, which makes the file processing work fully institutionalized, digitized and modernized. Therefore, file-level discs have obvious advantages in terms of basic technical indicators, service life, supporting systems and specifications, and are an effective and safe storage carrier.
At present, the domestic brands in the market that meet the national archival-level disc standards are mainly Beijing Tongfang Optical Disc Co., Ltd. Since the promulgation of the "Technical Requirements and Application Specifications for Electronic Document Filing Discs", Beijing Tongfang Optical Disc Co., Ltd. actively supports and participates in the project, and strictly abides by its regulatory requirements, and relies on the CD-ROM National Engineering Research Center to launch data suitable for preserving historical data. The high-quality optical disc product - file-level disc, enjoys a relatively high reputation in China.
Third, the application significance of file-level CD
1. Application file-level discs meet the needs of the new mode of file keeping in the information age. With the development of information technology and Internet technology, more and more archive information using traditional carriers is converted into electronic files. In this context, the file storage mode is bound to undergo qualitative changes, and it is no longer possible to keep electronic files as if they were holding paper files. For electronic files, the most important thing is to save the problem and ensure the long-term validity of the electronic file information. This has high requirements for the preservation of electronic information carriers. Practice has proved that optical disk technology is an effective way to solve this problem, and file-level optical disk is the result of the development of optical disk technology, using file-level optical disk as storage medium, file information. Storage security will be effectively guaranteed.
2. Application file-level discs meet the requirements of automated file management. Ensuring the integrity and security of the file is a top priority. Ensuring long-term readability of archival information is an important responsibility of archivists. Application file-level CD-ROM can automate the management of file work to achieve the purpose of mass throughput, random access and fast retrieval of file information data.
3. The application of file-level discs meets the requirements for the protection of public information rights. The right to know refers to the freedom and right to know and obtain information, including or not knowing and obtaining relevant information. The narrow right to know only refers to the freedom and right to know and obtain information. With the development of the times, the public's awareness of rights has increased and information needs have become stronger. Custody is not the ultimate goal of archival work. The archival work is ultimately to satisfy the public's access to archive information and to protect the public's right to information. The application of file-level discs provides a solid foundation for the implementation of automated management and the convenience and security of public access to information.
Overview of Steel Bar Cutting Machine
The steel Bar Cutting Machine is a kind of tool used to shear steel bars.
There are automatic steel cutting machine and semi-automatic steel cutting machine.
It is one of the necessary equipment for steel rebar processing, and it is mainly used to cut off the length of rebar in buildings, Bridges, tunnels, power stations and large water conservancy projects.
Compared with other cutting equipment, the steel bar cutting machine has the characteristics of light weight, less energy consumption, reliable work and high efficiency. Therefore, it has been widely used in mechanical processing and small rolling mills in recent years, playing an important role in various fields of national economic construction.
