'Single disk drive' diaporamas de présentation

Chapter 8

Chapter 8. File Processing and External Sorting. Primary vs. Secondary Storage. Primary storage : Main memory (RAM) Secondary Storage : Peripheral devices Disk drives Tape drives. Comparisons. RAM is usually volatile . RAM is about 1/4 million times faster than disk.

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External Sorting

External Sorting. Problem: Sorting data sets too large to fit into main memory. Assume data are stored on disk drive. To sort, portions of the data must be brought into main memory, processed, and returned to disk. An external sort should minimize disk accesses. Model of External Computation.

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Lecture: Storage, GPUs

Lecture: Storage, GPUs. Topics: disks, RAID, reliability, GPUs (Appendix D, Ch 4). Magnetic Disks. A magnetic disk consists of 1-12 platters (metal or glass disk covered with magnetic recording material on both sides), with diameters between 1-3.5 inches

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File Systems and Disk Management

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