- The writers of this report believe that digital
preservation and reformatting will be accepted by
libraries and archives when both questions of image
quality and questions of longevity are answered. The
organizational and technical issues involved in migrating
data away from near-obsolescent media (or media whose
software drivers, operating system environment or
hardware are near obsolescence) or in refreshing data
whose media is experiencing deterioration (as indicated
by an increase in monitored error rates) are specifically
not addressed in this project.
A project which should be undertaken by the preservation
community is to coax drive manufacturers to make
available externally to their units the detailed error
detection and correction (EDC) information which already
exists within them. This could then be used to monitor
trends in soft (recoverable) error rates and provide a
basis for migration schedules long before hard
(unrecoverable) errors begin to occur. In the networking
world, the SNMP (Simple Network Monitoring Protocol)
standard permits remote monitoring of the error rates and
performance of devices like modems and routers for
similar reasons.
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