This hard drive from LaCie has room for 4,000 GB of data. People tend to have very specific needs when buying computer compontents, but this could potentially work well for you.
From Amazon
LaCie Rugged USB-C, 4TB, Portable External Hard Drive, Drop, Shock, Dust, Rain Resistant, for Mac & PC, 3 year Rescue Services (STFR4000800)
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