I'd be curious as to any comments listserv members would have about
reliability over time of the backup media listed below.  I've heard some
conflicting stories.  What I hear most often is to avoid portable hard
drives as they are more likely to fail than any other media types.  I've
heard the life of optical is unknown, but there is a risk the film inside
wrinkles or fails in some way so it ruins the disk though I have personally
never had that happen.  Any magnetic media always has the risk of being
erased by a nearby magnet.  I've never heard any risks for solid state other
than I guess being physically broken or I suppose eventually obsolescence
which could apply to any of these eventually.  For relatively small backup
storage such as a defined set of images, assuming costs is equal or not
material, how would you rank them?

 

Here are the types I'm thinking of initially:

 

Optical (CD, DVD or other optical storage media)

 

Magnetic Static (floppy disks, backup tapes)

 

Magnetic, motor driven, fixed (Hard Drives mounted in PCs)

 

Magnetic, motor driven, portable (Portable Hard drives)

 

Solid State (Thumb Drives, Flash Cards, etc.)

 

Microfilm (just kidding, we know 500 years and can be read with a
flashlight)


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