My 2009 A+ book says the opposite of you. It defines half-life (the life expectancy or shelf life) of a storage media is the time it takes for the strength of the medium to weaken by half. Magnetic media, including traditional hard drives and floppy disk, have a half-life of five to seven years, but writeable optical media such as CD-Rs have a half-life of 30 years.
@entehrend ... I trust hard drives far more then optical disks... Whatever the half life of an optical disk is, I have seen far too many of them turn into coasters by just sitting in someones desk...
@entehrend The life expectancy of CDs/DVDs highly depends on the user. When I burn something to a DVD/CD, it gets lost after two weeks... I either lost the dvd or it has scratches and has become unreadable... It is user dependent, for me ... I cannot use DVDs/CDs
@RaphaClassic Well I can't argue against that. If you have trouble protecting your CDs and DVDs put them in a case, and keep them in a safe. My point is if you put a DVD in a safe next to a hard drive, the data on the DVD will last 6 times as long! That's a huge difference.
Recently helped a new client that had a six disk raid 5 array that went bad (was brought in after the failure). They had no backup and paid 15k to restore the data. Scary stuff.
TRU TRUE SCRUED!!!
ZoHaNCluB 1 week ago
My 2009 A+ book says the opposite of you. It defines half-life (the life expectancy or shelf life) of a storage media is the time it takes for the strength of the medium to weaken by half. Magnetic media, including traditional hard drives and floppy disk, have a half-life of five to seven years, but writeable optical media such as CD-Rs have a half-life of 30 years.
You called hard drives a permanent backup device.
entehrend 1 month ago in playlist Computer Security / Data Integrity
@entehrend ... I trust hard drives far more then optical disks... Whatever the half life of an optical disk is, I have seen far too many of them turn into coasters by just sitting in someones desk...
elithecomputerguy 1 month ago
@entehrend The life expectancy of CDs/DVDs highly depends on the user. When I burn something to a DVD/CD, it gets lost after two weeks... I either lost the dvd or it has scratches and has become unreadable... It is user dependent, for me ... I cannot use DVDs/CDs
RaphaClassic 4 weeks ago
@RaphaClassic Well I can't argue against that. If you have trouble protecting your CDs and DVDs put them in a case, and keep them in a safe. My point is if you put a DVD in a safe next to a hard drive, the data on the DVD will last 6 times as long! That's a huge difference.
entehrend 4 weeks ago
Another very, very helpful video. Thanks Eli!
BenBarrettBBB 4 months ago
Recently helped a new client that had a six disk raid 5 array that went bad (was brought in after the failure). They had no backup and paid 15k to restore the data. Scary stuff.
alpha202ej 6 months ago
I have an interview for a student technology specialist position at my university next week. I've been watching all your videos for information!
WyattsFreakinChannel 6 months ago
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Marychen91207 8 months ago