Comment M-Disc (Score 1) 251
If you are looking for long term storage, that is what M-Disc is made for.
http://www.mdisc.com/
Writable DVDs and Blu-rays use an organic coating that degrades over time. M-Disc says you only have up to 7 years of reliability before you start loosing data. A pressed CD/DVD will last up to 100 years, but I've had pressed music CDs that the media layer burned from very little use. Also pressed CD/DVD/Blu-rays are not practical for backup.
Hard drives are designed to be spinning. M-Disc claims hard drives are good up to 5 years, but if you don't spin them up every once in a while, they can fail in less than a year.
Flash Memory they say is up to 8 years. Again, if it isn't powered up every once in a while you can only be sure everything will be there for 2 years. If it is an SSD, your information can disappear any second. The SSD will still work fine, but they sometimes just loose everything on them.
Backup tapes have been the tried an true form of long term backup, but even those, people suggest having at least 1 backup of the backup as magnetic material degrades over time.
http://www.mdisc.com/
Writable DVDs and Blu-rays use an organic coating that degrades over time. M-Disc says you only have up to 7 years of reliability before you start loosing data. A pressed CD/DVD will last up to 100 years, but I've had pressed music CDs that the media layer burned from very little use. Also pressed CD/DVD/Blu-rays are not practical for backup.
Hard drives are designed to be spinning. M-Disc claims hard drives are good up to 5 years, but if you don't spin them up every once in a while, they can fail in less than a year.
Flash Memory they say is up to 8 years. Again, if it isn't powered up every once in a while you can only be sure everything will be there for 2 years. If it is an SSD, your information can disappear any second. The SSD will still work fine, but they sometimes just loose everything on them.
Backup tapes have been the tried an true form of long term backup, but even those, people suggest having at least 1 backup of the backup as magnetic material degrades over time.