I recommend to buy a portable hard drive (not ssd) and backup all your data there. The problem with ssd is that they can lose all data if they stay without electricity for about 1 year. for the price of onedrive 1 year you can get a 5 TB portable hdd, then you can use some free space from cloud storage like google drive and mega, which offer 15gb and 20gb if i'm not mistaken. have multiple backup (also on dvd and blu-ray) is very important, never rely on only one option ^-^