What is the function of spindle in hard disk?
A spindle is a shaft that holds rotating hard disk drive (HDD) platters in place. The term is also often used to refer to a single HDD. Spindle speed, measured in rotations per minute (RPM), is one metric used to gauge disk drive performance.
What is spindle motor in HDD?
A spindle motor is a small, high-precision, high-reliability electric motor that is used to rotate the shaft, or spindle, on which the platters are mounted in a hard disk drive (HDD). … Most HDD spindle motors spin the platters at a constant rate ranging from 3,600 to 7,200 RPM.
What is spindle motor in computer?
While almost everyone is familiar with computer hard disks, only few know that the heart of the hard disk is an electrically commutated DC motor, which is known as a spindle motor. This spindle motor carries the storage disks, which it rotates around its own axis (spindle).
What is function of hard disk drive?
What Does a Hard Drive Do? A hard drive is the hardware component that stores all of your digital content. Your documents, pictures, music, videos, programs, application preferences, and operating system represent digital content stored on a hard drive. Hard drives can be external or internal.
What voltage does a hard drive motor use?
For a 3.5″ hard drive, it requires +12V DC to run the motor, AND +5V DC to run the circuit boards. With SATA a third +3.3V DC is also used in addition to the other two. For a typical 2.5″ hard drive, it requires +5V DC (often converted to +3.3V DC by an on-board voltage regulator).
How do hard disks work?
The hard drive contains a spinning platter with a thin magnetic coating. A “head” moves over the platter, writing 0’s and 1’s as tiny areas of magnetic North or South on the platter. To read the data back, the head goes to the same spot, notices the North and South spots flying by, and so deduces the stored 0’s and 1’s.
Which is better SSD or HDD?
SSDs in general are more reliable than HDDs, which again is a function of having no moving parts. … SSDs commonly use less power and result in longer battery life because data access is much faster and the device is idle more often. With their spinning disks, HDDs require more power when they start up than SSDs.
Is 1TB bigger than 128GB?
A 1TB hard drive stores eight times as much as a 128GB SSD, and four times as much as a 256GB SSD. The bigger question is how much you really need. In fact, other developments have helped to compensate for the lower capacities of SSDs.