Last technical review: September 29, 2026 by PC-Doctor Engineering

Physical destruction is required when policy demands it, when the drive can’t complete a verified erase, or when the media can’t reach the sanitization level the data requires. Otherwise, a verified Purge lets the drive be reused or resold. Degaussing only works on magnetic drives. Shredding works on everything. Wiping works on both, if the drive supports the right commands and the policy accepts the result.

That paragraph is the whole decision. Most operations don’t make it. They destroy by default, because destruction feels safe, or they wipe by default, because wiping preserves value. Both defaults are wrong for some fraction of every batch.

Last technical review: September 29, 2026 by PC-Doctor Engineering

R2v3, ADISA, and NAID AAA all require documented data sanitization, and they all ask for different things. R2v3 sets a recoverability threshold and requires independent verification sampling.^[1] ADISA audits the technical efficacy of the erase, on site, with forensic tools.^[2][3] NAID AAA audits the people, the access controls, and the chain of custody around the erase, and leaves the technique to the operator’s policy.^[4]

Most operations learn those differences during an audit. The better time is before one.

Last technical review: September 29, 2026 by PC-Doctor Engineering

Most drive erase certificates are generated automatically, filed automatically, and never read by anyone until the day they matter.

That day is an audit, a customer dispute, or a data incident. And on that day the certificate is either evidence or it is a PDF with a green checkmark on it.

The difference is what's on the page.