Is there a difference between a solid state drive and a mechanical hard drive?

If you want to know more about solid state drives and mechanical hard drives: you can click: FAQ

solid state drive

Solid State Drive (Solid State Drive), commonly known as solid state drive, is made of an array of solid-state electronic memory chips. The hard drive is named after solid capacitors are called Solid in Taiwanese English. SSD consists of a control unit and a storage unit (FLASH chip, DRAM chip). The interface specifications and definitions, functions and usage methods of solid-state drives are exactly the same as those of ordinary hard drives. The product appearance and size are also completely consistent with ordinary hard drives. It is widely used in military, vehicle, industrial control, video surveillance, network monitoring, network terminals, electric power, medical, aviation, navigation equipment and many other fields.

Mechanical hard drive

Hard drives are divided into mechanical hard drives (HDD) and solid-state drives (SSD). Mechanical hard disk is a traditional ordinary hard disk, which mainly consists of: platter, magnetic head, platter shaft and control motor, magnetic head controller, data converter, interface, cache and other parts.

Difference

1. Shockproof and fall resistance: Mechanical hard drives are all disk-type, and data is stored in in disk sectors. The solid-state drive is made of flash memory particles (i.e., memory, MP3, U disk and other storage media), so there are no mechanical parts inside the SSD solid-state drive, so it will not be affected even when moving at high speed or even with flipping and tilting. to normal use, and can minimize the possibility of data loss in the event of collisions and shocks. Compared with mechanical hard drives, solid hard drives have an absolute advantage.

2. Data storage speed: Judging from the evaluation data of the PConline evaluation room, the performance of solid-state drives is more than 2 times higher than that of mechanical hard drives.

　3. Power consumption: The power consumption of solid-state drives is also lower than that of mechanical hard drives.

　4. Weight: Solid state drives are lighter in weight, 20-30 grams lighter than conventional 1.8-inch hard drives.

　5. Noise: Since Solid Hard has no mechanical parts and flash memory chips, it has the characteristics of low heat generation and fast heat dissipation. It also has no mechanical motors and fans, and the operating noise value is 0 dB. Mechanical hard drives are much inferior.

6. Price: As of now (2018/11/20), the brand’s 128Gb solid-state drive is about 150 yuan. The price of a 1Tb mechanical hard drive is only about 280. Solid state drives are more expensive than mechanical hard drives and have lower cost performance.

7. Capacity: The current maximum capacity of solid state drive is 100TB 3.5 inches

8. Service life: SLC can only read and write 100,000 times Long life, low-cost MLC has a read and write life of only 10,000 times. Therefore, compared to solid-state drives, mechanical hard drives have a longer lifespan.

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