Hard Disk Performance

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The performance of a hard disk is an integral portion of the performance of a system. One of the most significant parameters is the speed of the platters. Generally, the faster that a disk spins, the more data that can pass and be read by the magnetic heads. While a higher speed is optimal, this also increases the heat generated by the hard disk. Therefore, proper cooling such as fins can be introduced which help dissipate this heat. Another important aspect of a hard disk is latency. Latency is the average time for the sector that is being accessed to position itself underneath the head after the finished seek. Another more interesting performance parameter is the audible noise emitted from a hard disk and its vibration control. Quiet operation reduces a hard drives movement speed and acceleration, however at a reduced seek speed. Some models, such as hard drives offered by Seagate, includes Sound Barrier Technology, which allows the user to control system noise and vibrations. Finally, the power consumption of a hard drive can be very important to heat generation as well as power supply problems if the system is more complicated.
PC Tech Guide. PCtechguide.com. Web. Accessed 26 Jun 2017.

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