| 摘要 |
2105085 9215933 PCTABS00016 A data storage device (200) consists of solid state storage (208) and a rotating magnetic disk (210) attains a fast response time approaching that of a solid state device and improves response time of a normal magnetic disk. High performance is accomplished by hardware configuration (205) with procedures placing and maintaining data in the most appropriate media based on actual and projected activity. System management features a searchless method for determining the location of data within and between the two devices (208 and 210). Solid state memory (208) permits retention of useful, active data, and prefetching of data. Movement of updated data from the solid state storage (208) to the magnetic disk (210) and retrieval of prefetched data from the magnetic disk (210) is done as background tasks. The private channel between the solid state storage (208) and the disk (210) prevents the conflicting conversations. Microprocessors (205-1) manage and oversee the data transmission and storage. Data integrity is maintained through intelligent shutdown procedure.
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