This information comes from National Media Lab and dates back to June of
1995, but the problems discussed herein are still valid for newer formats of
tape.  It is mounted in cartridges rather than open reels now, but the media
substrate hasn't changed that much.   

http://bit.ly/fldaFo

http://bit.ly/hND3th

Problems such as tensioning, irregular packing on reels (there are still
reels inside the cartridges), and environmental issues aren't much
different. Dust, moisture and heat can still raise havoc on tape if not
properly protected.  Dust may not be able to reach the media as easily in a
cartridge, but moisture (if it forms inside due to temperature changes)
can't evaporate as easily... and heat can be transmitted easier through the
metal plate on most cartridges because there is less ambient air flow.

Another thing many fail to take into consideration with tape is the impact
of magnetic fields.  I recall an instance Hugh Smith shared with me once
about a firm that decided to build their tape storage library on the core of
a building... in most cases, a logical move.  They used the back wall of the
elevator shaft as their "anchor wall"... but they failed to realize that the
elevators used massive electromagnets to keep the car centered in the shaft.
 NOT an environment conducive to long data life on magnetic media.

I think tape, like microfilm, still has a place in the storage arena... but
users need to selectively apply which media to rely on, and for how long. 
Every system storing information assets need to include a process and
practice of periodic inspection as well as conversion and migration to
ensure persistent access that is appropriate for the intended retention
period.  And few should rely on any ONE FORM of media. especially for
information with a retention need in excess of 10 years.

Larry
[log in to unmask]
[Yes, it's really me =) ] 

List archives at http://lists.ufl.edu/archives/recmgmt-l.html
Contact [log in to unmask] for assistance
To unsubscribe from this list, click the below link. If not already present, place UNSUBSCRIBE RECMGMT-L or UNSUB RECMGMT-L in the body of the message.
mailto:[log in to unmask]