Vivek Pai, senior computer scientist at Princeton and his colleagues have developed SSDAlloc Technology is growing and demand for data storage on a lot, especially when we are living in the era of cloud computing with a wide hosting services like Dropbox, SugarSync, iCloud, Google Drive ... Comes with information storage system is a huge amount of power to maintain it, according to one estimate, the current data center of Google consumes a sufficient amount to provide power for 200,000 households in America in the same period. Therefore, the problem while saving fuel is running out is not easy issues with experts in the world. However, a recent study from the University of Engineering and Applied Science Princeton University have developed a software called SSDAlloc to help reduce energy consumption in the storage device using use flash drives instead of RAM on the computer. Overall this is a big step to help technology companies build a new direction for their server systems. As we know, on the current computer, RAM (Radom Access Memory) and drive to take on separate roles. Hard drive read write speed is slow, but by the characteristics making it cheaper and can store data when powered down outside. While RAM is director of access / export data much faster, but its drawback is high cost and need power to maintain data on it. When the computer or operating system, it will load information the operating system and software up RAM and CPU will process the data. That process requires RAM power consumption and heat generation. For large systems stable operation, one must be equipped with refrigeration equipment. Thus energy use will need more. If we have used different operating systems, especially Linux platform, you will really know the concept of SWAP. SWAP is a partition on the hard drive, but access speed is slow, but it can undertake the task as an extension of the system RAM to load a large amount of information that RAM is limited. Today, with new computers, users may be less interested in these partitions because they can be equipped with one or several modules sufficient to meet demand. However, this is ideal for scientists use to solve the energy problem. As explained, the flash drive read write speed faster than the speed of data on the hard drive a lot. Moreover, the new flash drive can take millions of access per second, tens of thousands of times larger than can only receive a maximum of 300 access to the most modern hard drives at the same time . Thanks to this ability, the flash drive can be strong enough to hold the prestigious role for RAM while still ensuring access speed of the system. A further important advantage of the flash drive is in operation, it produces very little heat, so that nearly one does not have to provide the cooling system comes. Previously, many software was built based on the idea, but in most cases, the development of code for the system is very difficult, or program can only be written server system working with a few applications that. After the recent failure of two other development teams, many experts thought that the method can not do this at the present time based solely on software. However, associate professor Vivek Pai and colleagues at the department of computer science at the University of America's most famous do not think so. They developed SSDAlloc to help programmers search mode change to traditional information. The Princeton system will allow developers take advantage of the ability to read / write on the flash drive. SSDAlloc will help understand the system as a flash drive inside components like RAM, but is placed at a lower priority level. The first version of SSDAlloc requires the programmer to fix them to write programs (according to estimates by 1% modified code) so that it can run on the system stability parallels between RAM and flash memory. However, after a period of research and development, it has worked well with all the programs and people who write this software will not have to change or add any code trouble than what they did. The team said that flash memory prices by only 10% of the cost of RAM with capacity respectively, so that it can help significantly reduce the cost host system. Furthermore, the use of both RAM and flash memory reduces power consumption by 90% compared with only RAM the usual way. These are advantages that other solutions can not have. It is known that the latest version of SSDAlloc has been used for the new flash memory company Fusion-io, a maker of semiconductor devices in Salt Lake City (United States). The scientists hope their initiative will be implemented more widely in the future to meet the needs of cloud storage systems is growing. Source: Princeton Unviverstiy ...
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