What hard disk is the safest for storing important data?

First, at present, hard disks are divided into mechanical hard disks and solid-state hard disks. From the perspective of data security, it must be a mechanical hard disk.

1. The data on the hard disk of the machine takes the magnetic pole on the disk track as the storage medium. This kind of data is stable and not easy to be lost. Even if the hard disk is seriously damaged, the data can be recovered.

2. The data of SSD is very unsafe, and the data exists in the high and low points of the internal capacitance of the chip. So if it is unstable, you need to power up the hard disk regularly to save the data, otherwise the data may become weak after a long time. Secondly, after a fault occurs, such as a circuit board burning out, the memory chips may burn out together, so there is no possibility of data recovery. The advantage of SSD is that it is fast, but the data is not safe.

Second, hard disk and mobile hard disk are actually a concept. The mobile hard disk is hard disk plus mobile hard disk box. From the perspective of data security, it must be mobile security, because the mobile hard disk is plugged in when it is used, and the hard disk in the machine is powered on as soon as it is turned on, that is, whoever uses it more loves to use it.

Thirdly, as mentioned above, hard disk and mobile hard disk are essentially hard disks for storing data, so there is no technical difference in data storage.