How long can hard disk data be saved?

Q: How long can the data of traditional magnetic disk and solid state hard disks be stored in normal circumstances?

Answer: Although manufacturers generally claim that the hard disk to save data life of not less than 100,000 hours, but this is only theoretical value, in the actual use of the process, there are many factors will affect this time. According to the general experience, hard disk save data compared to the time limit is 3-5 years, read and write frequently more than 3 years, the load is not heavy 5 years or so. The current long-term preservation of data is the most economical way to record CDs, 10% Low-cost, the second is longer than the hard disk save time, and some manufacturers say their CDs can be kept for 100 years, which is a bit exaggerated, but 10 years or so insurance. So develop a good habit: on the hard disk on a regular basis to engrave important data into a CD-ROM, and then regularly take out the CD to read, if found difficult to read, to timely reprinting.