When degaussing is the right method
Degaussing is effective on magnetic storage — hard disk drives and magnetic tape. It has no effect on data stored in flash memory.
Because a mixed shipment usually contains both magnetic and flash media, USACA confirms the method for each media type during scoping and records it against every serial number.
| Media | Degaussing effective? | Typical approach |
|---|---|---|
| Spinning hard disk drives (HDD) | Yes | Degauss alone, or degauss and shred, per your policy |
| Data tapes (LTO and other magnetic tape) | Yes | Degauss alone, or degauss and shred, per your policy |
| Solid-state drives (SSD, NVMe) | No | Physical shredding |
| USB drives, memory cards, phones, flash modules | No | Physical shredding |
| Hybrid drives (SSHD) | Partially — the flash portion is not affected | Degauss and shred |