For me I had a stack dvd blanks left over, I decided to save a little bit of money and used them to back up folders of childhood photos, documents etc and place them inside their own jewel cases.
I do have a 2TB external HDD, But that I throw on LARGE steam game back ups and movies.
Sure, the “cloud” exists and I use that too but what if your intewebz goes down, good luck getting your backups until it’s back up.
What do you use? Optical media, tape drives etc?
10-15 years for DVD. I have extensive experience with DVDs. I don’t have experience with Blu-ray but I would expect it to be half the rated lifespan too.
I’ve got oodles of 20-25 year old DVDs and never found a dud. But it’s good to set expectations.
Burned DVD’s or mass manufactured? Purchased can last forever although aluminum substrate corrosion has happened in humid environments.
Burned! I have soooo many data discs hahahaha