How to avoid network downtime?
A network of any company or organization is created to provide users with easy access to information, applications and network services. However, both company’s productivity and revenues can suffer significantly…

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After checking all the computers and installing, where necessary, the recommended boards, will the 2000 problem be resolved?
Of course not! Most of the problems will remain. The danger of the 2000 problem is that in recent years, very large databases have accumulated in any organization. In these…

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Internet integration
Now business is inconceivable without close integration with the Internet. As a rule, several employees of the office need Internet access, and there is only one communication line with the…

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Design Features of the Zip Drive Head Drive

Unlike HDDs, the Zip drive uses a linear drive with a moving coil. There are two types of drive mechanisms for moving coil heads: linear and rotary. These types differ only in the physical arrangement of magnets and coils.

The drive with a moving coil is an electromagnet. Its design resembles that of a conventional loudspeaker. When a current of a certain polarity flows, the coil moves in or out of the gap of the permanent magnet. In Zip, a movable coil is rigidly connected to a block of heads and is placed in the field of a linear permanent magnet. The coil and magnet are not interconnected in any way: the movement of the coil is carried out only under the influence of electromagnetic forces.

The linear drive used in the Zip drive moves the heads in a straight line, strictly along the radius line of the disk. Its advantage is that when it is used, there are no azimuthal errors characteristic of a rotary drive, but there is a significant drawback: the head block in such a mechanism must be massive enough, and to control it, you need, accordingly, massive enough and, most importantly , powerful, engine.

Due to its “heavy weight category”, and, accordingly, the inability to work fast enough, the linear drive cannot be used in modern HDDs.

In the production of hard drives, a rotary drive is used, which works on the same principle as a linear one, but in it the ends of the head levers are attached to the moving coil. When the coil moves relative to the permanent magnet, the head movement levers rotate, moving the heads to the axis or to the edges of the disks. Due to its low weight, such a design can move with great acceleration, which can significantly reduce the data access time. The rapid movement of the heads is facilitated by the fact that the shoulders of the levers are made different – the one on which the heads are mounted has a large length.

The probability of failure of devices where a massive linear drive is used is much higher than that of devices with a rotary drive (respectively, the use of a linear drive in a Zip drive can also cause a malfunction such as a breakage of heads).

Are "stamped" discs really so perfect?
"Stamped" discs (or, if you want, "aluminum") can be made in various ways. The most common is, to be precise, injection molding, rather than stamping. Modern technologies make it possible…

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How did the action of the Win95.CIH virus manifest on April 26, 1999 in Kiev
Naturally, the consequences of the virus will for a long time be generalized at different levels. However, the first victim of this virus brought his computer to the EPOS service…

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DIMM EEPROM test program dimm.exe
A quick analysis of the type of DIMM module installed in the system unit can also be done with dimm_id.exe. The program is subject to all the restrictions discussed above:…

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The Iron Solution to the 2000 Iron Problem
Before the onset of 2000, about three more months. But the situation was noticeably heated. It is understandable. If even a small fraction of what is written in the press…

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