What is the difference between purging records and archiving them when storage fills up?

When storage fills up, the instinct is to delete or move data to free space. But purging and archiving are very different actions with very different consequences. The key point: storage capacity should not decide what happens to a record — the retention schedule should.

What Purging Means

Purging is the permanent destruction of records. Once a record is purged, it is gone and cannot be recovered. In a properly governed program, purging is a planned disposition step that happens only when a record has reached the end of its approved retention period and is eligible for destruction.

Purging is appropriate when:

• The record’s retention period has fully expired.
• There is no active legal hold, audit, investigation, or open public-records request affecting it.
• The destruction is documented (what was destroyed, when, and under what authority).

Purging records simply because a drive is full — without checking retention — risks destroying information you are still legally required to keep.

What Archiving Means

Archiving is the act of moving records out of active, day-to-day systems into longer-term storage while preserving them. The record still exists; it is just held somewhere cheaper or more durable, and is typically accessed less often.

Archiving is appropriate when:

• The record is no longer needed for daily work but must be retained longer (for legal, regulatory, historical, or business reasons).
• You need to reclaim space in active systems without losing the information.
• The record has long-term or permanent value.

Archiving does not end the record’s lifecycle. The retention clock keeps running, and the record is still subject to holds and to eventual disposition when its time comes.

The Real Difference

Think of it this way:

• Purging removes a record from existence — it is a disposition decision.
• Archiving relocates a record while keeping it — it is a storage decision.

A full disk is a storage problem, not a disposition trigger. The right response is to consult your retention schedule: archive what still must be kept, and purge only what is genuinely eligible for destruction. This protects you from both keeping everything forever and deleting something you needed.

For more on retention periods, holds, and approved destruction, see the retention and disposition topic hub.