COMPUTER ARCHITECTURE
SECONDARY STORAGE DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Less densely packed
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Easier to identify magnetic signals
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Changed the direction of the read/write head
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Changed when a 1 is recorded
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Detailed explanation-1: -With longitudinal recording, recording bits become increasingly unstable as the recording density is increased, in contrast, in perpendicular magnetic recording, the recorded magnetization becomes more stable at high densities.
Detailed explanation-2: -The popular explanation for the advantage of perpendicular recording is that it achieves higher storage densities by aligning the poles of the magnetic elements, which represent bits, perpendicularly to the surface of the disk platter, as shown in the illustration.
Detailed explanation-3: -Shingled magnetic recording (SMR) is a technique for writing data to a hard disk drive (HDD) whereby the data tracks partially overlap to increase the areal density and overall storage capacity per disk.
Detailed explanation-4: -Hard drives use magnetic memory to store giga-and terabytes of data in computers.