What is a Winchester hard drive? What are the technical characteristics of a Winchester hard drive?

August 03, 2022

Winchester hard disk is a general term for modern mechanical hard disks. It is a single hard disk whose standard is not an entity.

What is a Winchester hard drive

Winchester hard drives are one of the main storage media of computers, which consist of one or more aluminum or glass discs. These discs are covered with ferromagnetic material. The vast majority of hard drives are fixed hard drives, which are permanently sealed and fixed in the hard drive.

What is Winchester hard drive? What are the technical characteristics of Winchester hard drive

Introduction to Winchester hard drive operation

Its head is not in contact with the disk; it is conceivable that if the speed of accessing data is to be increased, the disk of the hard disk should spin faster and faster. But if the head is in contact with the disc, no matter what material is used, it is impossible to do this kind of work. The technician thought of letting the head "fly" above the platters, keeping a very close distance from the platters. This idea is feasible, because the high-speed rotation of the disk will produce flowing wind, as long as the shape of the magnetic head is appropriate, it can fly like an airplane. In this way, the disc can spin quickly without worrying about disasters caused by friction. The magnetic head is fixed on an arm that can move in the radial direction of the disc. As the magnetic head moves at a high speed relative to the disk and the distance between the two is very close, even a small amount of dust can cause damage to the disk. Therefore, the disc, the magnetic head and the drive mechanism are sealed in a box.

Introduction to Winchester Hard Drive Technology

① Sealed head plate assembly. That is, the magnetic head, disk assembly and positioning mechanism are sealed in a disk cavity, and later it has been developed to include the spindle motor, etc., all into the disk cavity, which can be replaced as a whole.

②Using a small size and small buoyancy contact start-stop floating magnetic head. In this way, an ultra-small head-disk gap (sub-micron level) can be obtained to increase the recording density.

③Using thin-film magnetic recording media with lubricating properties.

④Using magnetic fluid sealing technology. It can prevent dust, oil and gas from invading the disc cavity, thereby maintaining a high degree of purification of the disc cavity.

⑤Using high-integration preamplifiers, etc. At present, the hard disk drives all use Winchester technology. Compared with replaceable disks, it greatly increases the recording density, improves the reliability of the disk drive, and makes it further miniaturized.

A disk drive made with Winchester technology. Winchester technology is to fix the relationship between the disk, magnetic head components, trolley, guide rail, spindle and the disk of the warm plate and the magnetic head. The magnetic head does not need to be adjusted for radial and skew, and the magnetic head is small in size and light in weight. It is fixed on a "loading arm" made of extremely thin metal sheets.

Winchester technical features

Most hard disks use Winchester technology. The characteristics of this technology are: ①The magnetic head and the disk are sealed and do not contact with the outside; ②The disk surface is flat and smooth; ③The magnetic head does not contact the disk when working, and the head is loaded. Smaller. Therefore, no matter whether it is reading data or writing data, the head is not in contact with the disk surface

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