Migration
XKCD #1909 Digital Resource
Lifespan
How long?
Infinity +1
Eternal Migration
- There is no final carrier.
- There is no evergreen format.
Therefore fact: Any data must sooner or later be migrated.
Migration Types
- Storage
- Format
- Software / platform / environment
Migration Types
Or more generically speaking:
Mission Migration
Migration Planning
- Consider which changes are needed.
- Evaluate when, how and who.
- Make sure you have a valid backup.
- Schedule possible downtime (and impact on work).
- Impact on IT-administration/access?
- Estimated duration until migration is finished?
Things can happen…
- Silent regression
- Unseen (meta)data changes
- Domino-effect: Forced updates of other things
I’m loving it! ®
- etc.
FrameMD5
FrameMD5 example
Eternal Migration
“After migration is before migration”
- Embrace the concept of “Eternal migration”
- Try considering how to get out of a technology before, or while
you’re using it.
- Find your timing sweet spot
Obsolescence monitoring
- So, when is a good time to migrate?
- What could happen if you wait too long?
- Which vital components might become obsolete?
Migration Summary
- Keep “Eternal Migration” in mind
- Consider migrations before you buy
- Migration + integrity checks = BFF
- Ask for documentation!
- Archive the sourcecode / schematics
- Monitor technology news
- Don’t wait too long…