As long as you don't have a few terabytes of data, you can create a second backup without deleting the first one. The small size is good and easy to use.
Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
99 Review
2 TB External HDD ADATA DashDrive Durable HD650, USB 3.2 Gen 1, Blue
55 Review
8TB Seagate Backup Plus Hub Desktop Hard Drive with Data Recovery Services
56 Review
18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review
π¨ Crucial X8 1TB Portable SSD β 1050MB/s Speed β USB 3.2 β External Solid State Drive with USB-C and USB-A Compatibility
5 Review
Seagate One Touch SSD 1TB: Portable External SSD, Black | Speeds up to 1030MB/s | Android App included | Mylio Create, Adobe Creative Cloud Photography Plan | Rescue Services (STKG1000400)
6 Review
π¨ Sabrent Rocket XTRM-Q 2TB Thunderbolt 3 External SSD, up to 2700 MB/s in Thunderbolt 3 Mode or up to 900 MB/s in USB 3.2 Mode (SB-XTMQ-2TB)
6 Review
π Seagate One Touch SSD 500GB External SSD Portable: Blue, Fast Speeds up to 1030MB/s, Android App, 1yr Mylio Create, 4mo Adobe Creative Cloud, Rescue Services
7 Review