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Which process defines the writing of physical address information to a disk?

Which process defines the writing of physical address information to a disk?

PrepAway - Latest Free Exam Questions & Answers

A.
Partitioning

B.
Formatting
C. Zoned-bit recording

D.
Command queuing

Explanation:
Disk Structure

Data on the disk is recorded on tracks, which are concentric rings on the platter around the
spindle. The tracks are numbered, starting from zero, from the outer edge of the platter. The
number of tracks per inch (TPI) on the platter (or the track density) measures how tightly the tracks
are packed on a platter.
Each track is divided into smaller units called sectors. A sector is the smallest, individually
addressable unit of storage. The track and sector structure is written on the platter by the drive
manufacturer using a low-level formatting operation. The number of sectors per track varies
according to the drive type. The first personal computer disks had 17 sectors per track.
Recent disks have a much larger number of sectors on a single track. There can be thousands of
tracks on a platter, depending on the physical dimensions and recording density of the platter.
Typically, a sector holds 512 bytes of user data; although, some disks can be formatted with larger
sector sizes. In addition to user data, a sector also stores other information, such as the sector
number, head number or platter number, and track number. This information helps the controller to
locate the data on the drive.
A cylinder is a set of identical tracks on both surfaces of each drive platter. The location of R/W
heads is referred to by the cylinder number, not by the track number.
EMC E10-001 Student Resource Guide. Module 2: Data Center Environment


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