What Should I Consider When Buying A Hard Drive?

Computer hard disk is the computer's main storage device. The hard disk (called by Hong Kong and Taiwan as a hard disk, English name: Hard Disk Drive, referred to as HDD Winchester-style hard disk for short) consists of one or more aluminum or glass discs. These discs are covered with ferromagnetic material.

1.Memory communication

There are two types: XT (that is, DMA) and AT (that is, interrupt-driven).

2.Head drive

Step by step

Hard disk is the most important computer

Do not forcibly turn off the power while the hard disk is working. Turning off the power while the hard disk is working will cause physical damage to the hard disk, and data will also be lost. In addition, there are high-speed components in the hard disk.

Hard drives are very scared of dust. If dust gets on the circuit board, it will cause unstable operation of the hard disk or damage internal parts. The functional working state of the hard disk has a great relationship with the life and temperature. If the temperature is too high or too low, the clock frequency of the crystal oscillator will change, which will cause the circuit components to fail. The moisture condenses on the component, causing a short circuit.

Secondly, we need to organize your hard disk regularly. This will increase your hard drive speed. If the

1. Don't shut down suddenly at work

Hard disk When the hard disk starts to work, it is usually rotating at a high speed. If we suddenly turn off the power midway, it may cause the head and the disk to shatter.

I. Hard disk cooling fan <br Considering the cooling effect, many people have installed hard disk cooling fans for their computer hard disks, but some low-end fans have quite obvious vibration, which can transfer the vibration to the hard disk. , Will have an impact on the life of the hard disk.
Second, the optical drive <br At present, the mainstream optical drive's reading speed has reached more than 50 times. When the optical disc rotates at a high speed, the vibration of the optical drive itself will drive the resonance of the chassis, which will affect the work of the hard disk. In addition, the high-speed rotation generates a lot of heat, and the optical drive is so close to the hard disk. The heat released from the optical drive will definitely increase the temperature of the hard disk.
3. Dust <br Dust damage to the hard disk is obvious. Dust deposited on the circuit board of the hard disk will seriously affect the heat dissipation of the chip on the circuit board, which will cause the temperature of the components on the circuit board to rise, which will cause the chip to overheat. And burned. In addition, if the dust absorbs moisture, it can easily cause a short circuit.
Fourth, static electricity <br During the computer repair process, many people are holding hard disks with their hands, but in dry weather, people may accumulate tens of thousands of volts of static electricity on their hands, which may cause static electricity on their hands. Break down the chip on the circuit board, causing the hard disk to malfunction.
V. Low-level formatting <br If the computer hard disk has bad sectors, many netizens have taken low-level formatting measures. In fact, low-level damage to the hard disk is very large, it may cause the spread of bad sectors on the disk, or even It will cause the hard disk parameters to be lost, making the hard disk unusable.
6. Power supply <br /> A low-quality computer will cause the hard disk to be affected by voltage fluctuations, especially when the hard disk is performing read and write operations, if a power problem occurs, a hard disk can be scrapped in an instant.
7. Magnetic field <br /> Because hard disk is a device that relies on magnetic media to record data, if it is disturbed by the magnetic field of the external environment, it is likely to cause the loss of magnetic disk data, so it should be kept away from the magnetic field environment as much as possible. ^[3]