Pio2001
100+ Head-Fier
- Joined
- May 17, 2005
- Posts
- 242
- Likes
- 43
Pressed CDs and burned CDRs are completely different.
The lifespan of pressed CD is unknown, but superior to 20 years (except for rare cases of bronzing or mold).
The lifespan of CDRs is very variable. Often around 2 to 5 years, it can be as short as several monthes, or as long as 10 years and more.
In Hydrogenaudio.org, a survey was once made about the brand and longevity of CDRs. The two remarkable brands were Verbatim Datalife Plus (made of Metal Azo), and Tayo Yuden, both of which it was nearly impossible to find a case of dead CDR.
I am also curious about the longevity of memories. Video games of old were sometimes sold as cartridges with some kind of electronic memory inside. I wonder if they still work.
The engine of hard drives sometimes fail, which turns the whole data unreadable at once.
I store my music in the main computer, with an external backup on hard drive. I make backups once a month, with different external drives (so as not to erase the backup before making a new one), and I always let the software check the copy after the operation, which means that all written sectors are readable and identical to the original.
Having the backups all connected at once is a bad idea, I think. A virus may erase all accessible data as soon as it sees a backup software running (that would be very nasty from the hacker, but hey, some hackers are).
The lifespan of pressed CD is unknown, but superior to 20 years (except for rare cases of bronzing or mold).
The lifespan of CDRs is very variable. Often around 2 to 5 years, it can be as short as several monthes, or as long as 10 years and more.
In Hydrogenaudio.org, a survey was once made about the brand and longevity of CDRs. The two remarkable brands were Verbatim Datalife Plus (made of Metal Azo), and Tayo Yuden, both of which it was nearly impossible to find a case of dead CDR.
I am also curious about the longevity of memories. Video games of old were sometimes sold as cartridges with some kind of electronic memory inside. I wonder if they still work.
The engine of hard drives sometimes fail, which turns the whole data unreadable at once.
I store my music in the main computer, with an external backup on hard drive. I make backups once a month, with different external drives (so as not to erase the backup before making a new one), and I always let the software check the copy after the operation, which means that all written sectors are readable and identical to the original.
Having the backups all connected at once is a bad idea, I think. A virus may erase all accessible data as soon as it sees a backup software running (that would be very nasty from the hacker, but hey, some hackers are).