Why "later" is an expensive answer
Hard drives give no reliable warning. Some fail slowly, accumulating bad sectors; others simply stop overnight with no symptoms at all.
What makes a music collection different from other files: some of it cannot be downloaded again. Independent releases whose label has closed, live recordings, albums pulled from circulation — if your copy is gone, it is genuinely gone.
And unlike family photos, which usually end up scattered across phones and social media, a music collection almost always exists in exactly one place.
The 3-2-1 rule
This is the guideline professionals use, and the reasoning holds for anyone:
- 3 copies of the data — the original plus two backups
- 2 different media — for example an internal drive and an external drive
- 1 copy off-site — at a relative's house, at the office, or in cloud storage
The third point is the one people skip, and it is precisely the one that protects against events that take everything at once: fire, flood, theft, or a surge that kills every device in the room.
If all three feel like too much, start with two. One external backup is enormously better than none.
Choosing the media
- External hard drive — cheapest per gigabyte, well suited to large collections. Typical life is 3–5 years of normal use.
- External SSD — more shock-resistant and far faster, but more expensive. Good for a backup you carry around.
- NAS — a network storage box at home. Convenient for large collections, but remember: a NAS with RAID is not a backup — if you delete a file, it disappears from every disk at once.
- Cloud storage — safest against local disasters, but it carries a monthly cost, and uploading 500 GB takes a long time the first round.
The most dangerous misconception
Copying a folder to another drive is not a full backup — it is a mirror. If a file becomes corrupted or is deleted and you copy again, the damage is copied along with it and overwrites the good version.
A proper backup keeps versions. If you realise a month later that 300 files had their metadata overwritten incorrectly, a versioned backup lets you return to the state before that happened.
For a music collection, which changes rarely, keeping two or three restore points is plenty.
An untested backup is not a backup
This is the most ignored and most regretted piece of advice in the whole subject.
Backup drives can fail silently. Files can copy incompletely. Backup software can stop running for months without telling you.
Once every few months, pull a handful of random files off the backup and try to play them. Five minutes that can save ten years.
Always, before a bulk edit
There is one moment of maximum risk for a music collection: when you write metadata to hundreds of files at once.
If a setting is wrong or the matching misfires, the damage spreads across many files in minutes. That is a different class of problem from mistyping one file, which is trivially fixed.
So: back up before bulk operations, not after. This is also why EarTea keeps a copy of the original file before writing tags, so recovery stays possible even when you forget.
Keeping it simple enough to survive
The most sophisticated backup strategy is worthless if it is tedious enough that you stop running it after two months.
What works for most people: one external drive synced automatically once a week, plus one copy refreshed every few months and kept somewhere else.
Not perfect. But a simple backup that actually runs beats a perfect plan that dies in month three.
Clean up before you back up: a collection with tidy metadata makes the backup far more useful on the day you need it.
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