Compared with mechanical hard disk, solid-state disk has faster reading and writing speed. Therefore, the replacement of mechanical hard disk by solid-state disk is just around the corner. At present, many users use solid-state drives, but many servers still use mechanical hard drives. What’s the reason?

Although the solid-state drive can surpass the mechanical hard disk for several blocks in speed, it has broken through the bottleneck of performance. The price of SSD is very high, but the price of SSD is very high. The server is used to store massive data, which requires a large amount of hard disk capacity. The single capacity of mechanical hard disk of general server can reach more than 2TB, and the mechanical hard disk of mainstream high-capacity server can reach about 10TB or even greater.

Ordinary solid-state drives are much more expensive than mechanical drives. Although solid-state manufacturers have also launched enterprise solid-state drives, they are more expensive. If all servers use solid-state drives, the cost will be very high, which is difficult for ordinary enterprises to afford.

For a long time, the data security of the server is the most important. In the words of the industry, “hard disk is valuable, data is priceless”. Usually, if the data of the server is lost, the loss will be incalculable. Because SSD is chip level storage, it is difficult to recover the data of SSD if it is lost. If the mechanical hard disk is damaged, you can retrieve important data through professional data recovery.

At present, from the perspective of capacity, cost and security, the current mechanical hard disk is undoubtedly the absolute mainstream in the server field. However, at present, many servers have adopted the solid-state + mechanical hard disk scheme. Like home computers, the solid-state hard disk is used as the system disk and the mechanical hard disk is used as the storage to ensure the speed, capacity and security

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