 The new Digital Rosetta Stone (DRS) memory, invented in Japan, can store data for over 1,000 years. Currently optical is the best long-term storage format, but it degrades within 100 years or less. (Source: techshout.com)
This is one LONG term storage solution
Memory longevity is a touchy subject that most businesses, researchers, and consumers purposefully ignore. Magnetic drives, in theory, are thought to be corrupted in about 40 years due to the Earth's magnetic field, though this has not been fully observed yet (hard drives have only seen widespread since the 80s). Optical discs, such as CDs and DVDs are expected to become corrupt in about 30-100 years, if not kept out of contact with moisture and oxygen.
So if we wanted to store something for more than a century, there are few good current solutions. Until now, that is; Japanese researchers have come up with a new form of ultra-long term memory that they say can last over 1,000 years. They dub their memory the Digital Rosetta Stone, or DRS memory for short.
The system consists of a stack of four 15-inch wafers, each containing special memory chips. The wafers are sealed with SiO2 and SiN to insulate them from oxygen gas and water. This key feature maintains the humidity at below 2 percent, essentially allowing the long life. The wafers will be built on a 45nm CMOS technology and offer 2.5 Tbits of total memory capacity
In order to get at the memory and read from and write to it, researchers use a electron-beam direct-writing technology. A mask ROM on the chips provides inductive coupling and allows contactless communication.
The test prototype used larger scale 0.18μm CMOS technology and 5mm x 5mm test chips. With the reader and the wafers separated from contact by 0.2 mm, a four-channel communication speed of 150Mbps was achieved, using only 56mW of power.
Researchers hope the system will be used to protect mankind's most precious and critical digital data. In time the technology may see its way into the mainstream as well, serving as a backup for important business or consumer information.
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