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Hard Disk Sector Interleaving Definition |
The information in this document applies to:
WordPerfect® 5.1 for DOS
Problem
Solutions: Hard Disk Sector Interleaving: The information stored on a floppy or hard disk is arranged in a series of concentric circular paths called tracks. A single track on a standard IBM-compatible disk contains approximately nine thousand bytes of data. But, since data is usually accessed in much smaller chunks, each track is divided into smaller sections called sectors, 512 bytes long. Think of a pie which has been cut into seventeen identical, and numbered slices. When we read the information contained in sector one of the current track, we then also need to read the next sector, number 2. However, by the time sector 1 has been moved into our computer, the beginning of sector 2 has already passed under the read/write head. So we must wait for the disk to rotate once around to deliver sector 2. This problem was resolved by spreading the sequentially numbered sectors out around the disk. Instead of placing sector 2 immediately after sector 1, sector 2 could be placed a few sectors later. This sector staggering is known as sector interleaving. |
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