Zenith Z-100 Series, Руководство пользователя

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Page 5
WINCHESTER SUPPLEMENT
Hardware Features
The "read/write" head (which records and "reads" information
to and from the surface of the disk) "floats" on a cushion of
air above the disk as it turns. The distance between the head
and the surface is so small that even a tiny smoke particle
could cause irreparable damage to the disk. For this reason,
most disks, including your Winchester disk system, are sealed
against contamination.
In contrast to the floating head of a hard disk, the head of
a floppy disk drive actually rides on the surface of the disk.
The read/write heads of both systems have the same function
and are described on page 1.16 of your User's Manual.
The organization of the individual hard disk is similar to a
floppy disk and is also described on page 1.16 of your User's
Manual. Mowever, a hard disk system may have more than
one platter, and the system may use each side of each platter.
Therefore, each side will have its own read/write head. Each
head is in alignment with the heads for the other platters or
sides, and all are moved together. Refer to Figure 1.
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CYLINDER
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TRACK 0
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Figure 1
The Elements of a Hard Disk
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R E A D /'uV R I T E
HEAD S
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PLATTERS