A new method by Fujitsu enables 2x response writing speed in flash storage

Fujitsu Laboratories Ltd. announced the development of high-speed in-memory data deduplication technology for all flash devices which enables the production of storage systems with up to twice the response speed when writing data compared to previous methods. These flash arrays are large scale and have features like high speed storage systems and use multiple flash devices such as solid state drivers. Recently all-flash arrays have incorporated deduplication technology that consolidates duplicate data into one to write to a flash device, in order to utilize the limited capacity of flash devices. However, as the system connects to multiple flash devices through a network in order to search for duplicate data each time it writes data, and storage devices grow in capacity and increase in speed, a problem of lowered response speed during write operations arises. Now Fujitsu Laboratories has developed a new method that can accelerate response speeds by executing deduplication after writing data. In addition, as data may be written to memory twice in some cases when processing is continued with the new method, thereby increasing communications volume and lowering overall processing performance. Fujitsu Laboratories has thus developed this technology to automatically switch between the new method and the previous method, as operational conditions require. This means ...