At 09:43 PM 4/7/99 -0700, you wrote:
People today don't realize that the old
 systems used a floppy like present systems use a hard
drive, almost all the
time, which is a heck of a lot of wear for a contact media.  
   I used to work for Burroughs and they had a computer that used 8"
floppys that spun continously.  Burroughs said to replace the disks every
100 hours.  I have no idea how long they would actually run before failing.
 Does anyone know?  I have a CPM machine that spins it's 5 1/4" disk
continously but I haven't run it enough for a disk to fail.
   Joe