> 3 months for my SSD
Younger me thought I was smart repurposing my SSDs as shockproof 2.5" external backup drives. Suffice it to say that I was a year abroad, and came back to losing all my data because of it. I was able to recover some parts, but most of it was gone.
Only buying CMR surveillance-class HDDs now for my backups. They're limited to 8TB for a 3.5" sized HDD, but that's far better as a compromise than the nightmare of losing all digital copies of tax documents that you have to keep - mandated by law - for at least 10 years.
When that happened I had to renew my ID, and had to find the original birth certificate in paper form in the hospital's paper archive to get a signed copy, and had to go there with multiple relatives to prove my identity. Just to get my ID renewed. That incident surely made me realize how important backups are.