Understanding migration of valuable data away from obsolete physical storage media.
What is digital media migration?
Migration is the process of moving digital information from an ageing or obsolete storage environment into a current environment so that it remains usable.
Why migrate now?
Media and hardware do not remain accessible indefinitely. NARA recommends copying information from magnetic and other legacy media into current environments because of varied life expectancies and equipment obsolescence.
Migration versus recovery
Recovery focuses on retrieving information that is difficult to access. Migration is the broader preservation action of moving usable information into a sustainable managed environment.
What should be recorded?
The source media, date, method, files transferred, technical characteristics, checksums and any anomalies should be documented where preservation requirements justify it.
Does migration mean destroying the original?
No. Migration can occur while retaining the original carrier, particularly where it has historical or evidential significance.
Frequently Asked Questions
Is migration the same as backup?
No. Migration moves content from an obsolete or vulnerable environment into a current one; backup is a resilience measure that creates additional copies.
When should old media be migrated?
Important data should be migrated before media deterioration or hardware obsolescence makes access difficult.
Can migrated files keep their original dates?
They can often retain original metadata, but the migration process itself should also be documented.
Further Reading
Oxford Duplication Centre — Practical Expertise
Legacy data recovery requires the right combination of source assessment, compatible hardware, specialist imaging or extraction, careful verification and a managed destination for the recovered information. The objective is not simply to open an old disk, but to preserve and make the information usable.
Need DAT tapes digitised?
Oxford Duplication Centre provides professional DAT digitisation for individual tapes and archive collections, with preservation and access outputs tailored to your requirements.
WAV Audio Digitisation Request a Quote