Although the high-speed SSD is favored by many players, it depends on the mechanical hard disk to be cheap and large enough. If you like playing large-scale 3D games or hoarding high-definition films and television, the mechanical hard disk is more suitable for most users. If you see the colorful hard disk headache, please follow me on the road from getting started to giving up DIY.

At present, the main manufacturers of mechanical hard disk are Western Digital and Seagate, and their product lines are highly similar. Western Digital has blue disk, purple disk, red disk, black disk and gold disk, while Seagate has cool fish, cool eagle, cool wolf and galaxy. Because of their different positioning, their parameters and prices are also different.

Both blue disk and cool fish are installed disks for ordinary office and daily household, with a 2-year warranty, covering capacities ranging from 1t to 8t.

The rotation speed of this series of hard disks is basically 5400 rpm. There are both CMR vertical disk and SMR laminated disk. Generally, there are more high-capacity laminated tiles. Of course, it is characterized by low cost and large quantity. The design and use scenario is 5 × 8-hour office and daily environment.

The positioning of purple disk and cool eagle is the storage disk of security monitoring, which provides a 3-year warranty and more choices of capacity, covering more versions from 1t to 18t.

The rotation speed of this series of hard disk varies with the capacity. Generally, 5400 or 5900 revolutions are for small capacity and 7200 revolutions are for large capacity above 6T. Although in theory, there should be no tile stack for 24-hour operation of the monitoring disk, there are still tiles in the commercial products. Therefore, when purchasing, we must be optimistic about the vertical disk before starting. Its characteristic is that it is designed for the monitoring environment and there is no data error correction, Therefore, when storing files, you should pay attention to possible errors. The design use scenario is 7 × 24-hour uninterrupted working environment.

The positioning of red disk and cool wolf is NAS dedicated disk, which provides a 3-year warranty and covers different requirements from 1t to 18t. The positioning is higher than that of purple disk and blue disk.

This series of hard disks are also related to the speed and capacity. The small capacity hard disks are 5400 rpm or 5900 rpm, and the large capacity hard disks are mostly 7200 rpm. The vertical CMR technology is mainly used, and only a few products adopt SMR. It is characterized by optimization for raid, and the design use scenario is 7 × 24-hour uninterrupted working environment.

In western mathematics, there is also a black disk specially designed for the game environment, which provides a 5-year warranty, with a capacity from 1t to 10t and a comprehensive coverage.

The black disk adopts the high speed of 7200 rpm to obtain better reading and writing performance. It adopts CMR vertical magnetic recording technology, which is characterized by high speed, strong performance and long warranty. Of course, its price is much more expensive than other disks. The design and use scenario is the high load environment of game players.

Western Digital’s gold disk, enterprise disk and Seagate’s Galaxy series hard disk are all built for the business environment, that is, the environment such as server and data center. They enjoy a five-year warranty, and the capacity can be said to be wiped out from 1t to 20t.

Enterprise disk can be said to be the leader in mechanical hard disk, including 7200 speed, 512M super cache, 5-year warranty, ultra-high MTBF, helium packaging and other mechanical hard disk. It can be said that there are all kinds of high-tech mechanical hard disk. In addition to being expensive, it has no disadvantages. Basically, only commercial users can afford it.