I plan to store some data on a 2.5" SATA hard drive for several years, up to 5 years, i.e. the drive will be unused for that long.
Assume that I duplicate some critical files on the same drive. Will it help to decrease the chances of lost data? Would it make a difference if the file copies are on different volumes of the same drive versus different directories on the same volume? Assume NTFS file system, any special parms to use, or maybe another file system?