Information Technology Reference
In-Depth Information
Figure 1-4: A hard drive contains multiple platters. Each side on a platter has
circular tracks containing magnetic media and a read/write head. A cylinder
consists of all of the tracks with the same diameter on all of the platters.
the head performs the read or write operation on the media. The head reads
and writes a minimum of a sector's data in each read or write operation.
Flash memory resides in chips. Accessing flash memory requires no moving
parts. USB storage devices with flash memory don't have mechanical drives,
but the term
flash drive
for these devices has stuck.
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