When consumers purchase a laptop, notebook hard drive is a more important factor in the choice, but for those who have not understood the friends will do nothing, then the laptop hard drive which is better? What is the use? Let's take a look at the decoration home decoration network Xiaobian.
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What is a laptop hard drive?
Notebook hard drives are designed for mobile devices like laptops, featuring small size, low power consumption, and shock resistance. But the fastest laptop hard drive is 10,000 to 64M Cache . Even if the rpm is the same, the line speed of the outer ring can't be compared with the desktop hard drive of the 3.5 -inch platter. The laptop hard drive is now the performance of the laptop. The biggest bottleneck.
Which is better for laptop hard drives?
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1 , 2.5 -inch standard SATA interface mechanical hard disk. This kind of hard disk is the standard configuration of most low-end and mid-range notebooks. The advantages are cheap price and large capacity. The disadvantages are slow reading and writing performance and low performance. These drives use a standard SATA interface and are supported by virtually all laptops.
2 , 2.5 -inch standard SATA interface solid state drive. This kind of hard disk is common in medium and high-end notebook computers, and can also be upgraded by users. Its advantages are fast reading and writing speed and high performance, but the price is relatively expensive. These drives also use the standard SATA interface, which is supported by almost all laptops.
3, for a small installation space micro SSD. Common features of such solid-state drives are small size, but there are many types of interfaces. Commonly used are mSATA interfaces, NGFF interfaces, and M.2 interfaces. The use of such a solid state drive requires the laptop to provide the corresponding interface slot, so if you are installing it yourself, you must determine if your laptop provides the corresponding expansion slot before purchasing.
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What are the thicknesses of laptop hard drives?
Laptop hard drives have a desktop hard drive with no parameters, thickness, standard laptop hard drive has 9.5 , 12.5 , 17.5mm three thickness. The 9.5mm hard drive is designed for ultra-light and ultra-thin models. The 12.5mm hard drive is mainly used for thick optical and soft interchangeable and all-in-one models. As for the 17.5mm hard drive, it is the product of the previous single-disc capacity. There are basically no models available.
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What is the use of laptop hard drives?
Laptop hard drives record data using the polarity of specific magnetic particles. When the magnetic head reads data, it converts the different polarities of the magnetic particles into different electrical pulse signals, and then uses the data converter to turn these original signals into data that can be used by the computer; the writing operation is exactly the opposite.
In addition, there is a storage buffer in the notebook hard disk, which is designed to coordinate the difference between the data processing speed of the hard disk and the host. Since the structure of the hard disk is more complicated than the floppy disk, its formatting is also more complicated than the floppy disk, which is divided into low-level formatting, hard disk partitioning, advanced formatting, and file system establishment.
After the notebook hard disk drive is powered up, the initialization is completed by the MCU initialization module in the control circuit, and the head is placed at the center of the disk. After initialization, the spindle motor will start and rotate at high speed. The carriage mechanism that loads the head moves the floating head to the 00 track on the surface of the disc , and is in the startup state of waiting for the command.
When the interface circuit receives the command signal from the computer system, the preamplifier control circuit drives the voice coil motor to emit a magnetic signal. The magnetic head according to the change of the induced resistance value correctly positions the disk data information, and decodes the received data information through the amplification control circuit to the interface circuit, and feeds back to the host system to complete the command operation. The power-off state of the hard disk operation ends the floating head to the center of the disk surface under the action of the anti-torque spring.
The above is the laptop hard drive that Xiaobian brings to you. Which is better? What is the use? I believe that everyone has a basic understanding of the use of laptop hard drives after reading this article. If you want to know more about decoration, please click to enter the decoration knowledge channel .
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