In devices with a moving coil there are no pre-fixed positions. Instead, they use a special guidance system (positioning), which accurately brings the heads to the desired track.
The system of precise guidance of the heads on the tracks is called a servo drive, and for its operation a feedback signal is required that carries information about the real relative position of the tracks and heads.
Temperature fluctuations do not affect the accuracy of the drive. When compressing and expanding disks (rotation, temperature), all changes in their sizes are monitored by a servo drive and the positions of the heads are adjusted. Continue reading
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 when a server running one or more business applications becomes unavailable. Losses from downtime, according to various sources, for an average company range from units to tens of thousands of dollars per minute. Continue reading