Blu-ray is a new generation storage format led by Sony. It has evolved from DVD and can be compatible with unlimited down formats. The storage period is generally more than 50 years. Currently, the largest capacity Sony Blu-ray Disc has reached 100GB. In 2015, Sony and Panasonic will unite. Launched the 300G-1T super capacity product. As a professional file-level storage medium, Blu-ray Disc is currently mainly used in the broadcasting and TV industry, and has gradually covered industries and companies with rigid storage needs such as government, education, finance, and public utilities. Taking the broadcasting and TV industry as an example, there are currently three main data storage methods in China: tape (data stream), hard disk, and Blu-ray Disc.
The use of magnetic tape to save data has its inborn drawbacks: it is easy to damp and demagnetize and cut off; it has a short preservation time, its life is generally about 10 years, and it can only be eliminated when it expires, and it can no longer be used; formats and intergenerational incompatibility, over 35 years Years of replacement, the data need to be copied again, which is equivalent to the repeated construction, the slow response, the need to spend a lot of manpower and resources for repeated rescue, storage conditions in a constant temperature and humidity environment, high energy consumption; due to the above Defective tapes are being phased out.
Hard disk due to its physical characteristics, service life and security make it not suitable for long-term storage medium; from the current and long-term perspective, Blu-ray is the best choice for long-term storage of data security. Blu-ray products have the following advantages:
1. Longer life: Blu-ray discs have undergone two revolutions in technology: superhard protective coatings and inorganic recording materials, and new technologies have enabled blue-ray discs to be stored for more than hard disks, tapes, and other storage media, with a lifetime of up to 50- 100 years.
2. Lower risk: Ultra-hard protective coating and inorganic recording material make Blu-ray discs with their strong anti-scratch and anti-fingerprint contamination capabilities; plus non-contact reading and writing between the optical heads and Blu-ray discs of Blu-ray drives. , The number of readings can reach 100,000 times, some materials of radio and television need to be used repeatedly, Blu-ray disc is more suitable for radio and television storage.
3. High compatibility: Blu-ray discs can be compatible with optical media such as CD/DVD in the past, and can be compatible with future generations of large-capacity optical discs (such as terabytes of discs). Blu-ray is more robust, and Blu-ray discs are now preserved for 50 years. Can also easily find the optical drive to read, universality is no doubt.
4. Lower cost: The cost of Blu-ray discs has dropped to a very low level. Now 50G Blu-ray discs are currently equivalent to less than one yuan per GB. As the market continues to expand, the capacity of discs continues to increase. With continued popularity, the price of Blu-ray discs will continue to decline. In 2015, Sony Panasonic will launch a larger capacity 300G-1.5T Blu-ray Disc, and Blu-ray storage will enter a new era of rapid development.
5, lower energy consumption: data stream tape storage, read and write data on the tape by robot arm movement and tape coiling, and the huge volume of the tape library requires a constant temperature and humidity storage environment, energy consumption; hard disk storage methods The online attributes determine the high energy consumption nature and require 24-hour uninterrupted power supply to the hard disk array. The blue-ray disk storage method does not require real-time loading of high-power power supplies. There are no special requirements for the storage environment and the energy consumption is far lower than the previous two.
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