ATA to Ultra ATA :: essays research papers

ATA to Ultra ATA/66Advanced ATA Storage Interface origin Interface History Understanding the Need for a Faster phonograph record Interface Technology Overview Performance Increase Cost Stabilization backward Compatibility System Requirements Data Integrity and Reliability Conclusions More Information originThe PC industry is constantly searching for advanced technology. This equates to more saucer space, faster performance, more memory, better displays virtually every component is below relentless pressure to improve. Continual improvement for the disc subscribe to industry means lower costs, improved reliability, higher capacity, and better performance. As PC performance increases, the performance of the delicate drive, which is the central input/output (I/O) gubbins of the PC, becomes increasingly important. Improvement in disc drive performance is a complex area and is measured using several components seek time, rotational latency, internal shift rate, cache, and int erface speed.Interface HistoryThe hard drive interface is the path through which information travels between the PC and the hard drive. The original ISA-dependent ATA (IDE) interface was limited to about 4 Mbytes/ randomness in the beginning, but reached as high as 8 Mbytes/sec. Interface protocols, such(prenominal) as programmed input/output (PIO) and direct memory access (DMA) modes, were knowing to take advantage of the new local bus architectures that replaced ISA. ATA interface modes lease progressed from PIO to DMA and now Ultra DMA, giving data transfer rates from 8.3, 11.1, and 13.3 Mbytes/sec up to 16.6, 33.3, and now 66.6 Mbytes/sec.Specification ATA ATA 2 ATA 3 ATA/ATAPI 4 ATA/ATAPI 5 gunk Transfer modalitys PIO 1 PIO 4DMA 2 PIO 4DMA 2 PIO 4DMA 2UDMA 2 PIO 4DMA 2UDMA 4 Max Transfer Rate 4Mbytes/sec 16Mbytes/sec 16Mbytes/sec 33Mbytes/sec 66Mbyte/sec Max Connections 2 2 2 2 per cable 2 per cable stock Required 40-pin 40-pin 40-pin 40-pin 40-pin, 80-conductor Addition al Features - Base - upper- Synchronous Transfers - S.M.A.R.T.- Secure Mode - Queuing- Overlap- ATAPI - Speed- Data Reliability Year Introduced 1981 1994 1996 1997 1999 The trends in the in a higher place chart show that several components have improved with the evolution of the ATA interface. Speed and functionality have made major strides over the years. Performance remains the intimately commonly considered attribute with interface developments, and Ultra ATA/66 makes burst data transfer rates of up to 66.6 Mbytes/sec possible.Understanding the Need for a Faster Disc InterfaceUltra ATA/66 provides a low-cost, high-reliability, backwards-compatible closure to data transfer bottlenecks that slow overall system performance. As the data storage density (areal density) of disc drives and rotational speeds have increased, bottlenecks also increased, therefore requiring the ATA interface to improve performance to attain compatible data transfer speeds.