2results about "Special recording techniques" patented technology

To provide a data management system that can read information stored in a ferroelectric recording medium at high speed with high recording density and can have high expandability.SOLUTION: A data management system according to the present invention is for storing data on a high-speed communication network, including: at least one external storage device having a data management unit including an internal storage device and a ferroelectric recording medium, in which the data management unit stores data on the high-speed communication network in the external storage device, and stores metadata used for reading the stored data in the internal storage device.SELECTED DRAWING: Figure 30

A high-performance disk device is provided. A plurality of control chips included in the disk device each include a cache control circuit and an arbitration circuit, and control one of a plurality of actuator systems. A first control chip is connected to a buffer memory via the cache control circuit included in the first control chip, and is connected to a second control chip. The second control chip is connected to the first control chip and a third control chip. An arbitration circuit included in the second control chip performs arbitration between data transfer between the third control chip and the first control chip and data transfer between an actuator system controlled by the second control chip among the plurality of actuator systems and the first control chip.