First and foremost: don't use an SSD for cold storage: depending on the chips in your external drive, the bits can decay in as little as 6 months: https://photo

First and foremost: don't use an SSD for cold storage: depending on the chips in your external drive, the bits can decay in as little as 6 months: https://photostructure.com/faq/how-do-i-safely-store-files/#why-3-2-1-isnt-enough-data-integrity https://photostructure.com/faq/how-do-i-safely-store-files/#... Lots of copies keeps stuff safe. If you don't mind the hassle, you can buy a couple HDDs (maybe a 2.5" and a 3.5" from different manufacturers), rsync to both of them, and hand one to a friend or family member that lives an hour or two away from you. You may want to encrypt the drive, depending on contents and trust if the remote storage location. Repeat quarterly/annually depending on your data change velocity/appetite for data loss/willingness to muck with it. This should cost under $200, and the HDDs should last at least 5 years, so that amortizes to $40/year of 2 remote backups. No cloud offering can get close to that.