# Question about TEST command vs. Backup with --full-remote-verification and backup-test-samples

**URL:** https://forum.duplicati.com/t/question-about-test-command-vs-backup-with-full-remote-verification-and-backup-test-samples/5412
**Category:** Support
**Created:** [November 26, 2018, 10:39am UTC](https://forum.duplicati.com/t/question-about-test-command-vs-backup-with-full-remote-verification-and-backup-test-samples/5412 "2018-11-26T10:39:19Z")
**Posts on this page:** 1
**Showing post:** 5

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### Author: ![ts678](https://forum.duplicati.com/letter_avatar_proxy/v4/letter/t/8491ac/32.png) [@ts678](https://forum.duplicati.com/u/ts678)
#### Post date: [November 26, 2018, 9:17pm UTC](https://forum.duplicati.com/t/question-about-test-command-vs-backup-with-full-remote-verification-and-backup-test-samples/5412/5 "2018-11-26T21:17:55Z")

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There were some posts recently on what --full-remote-verification actually does, and the [documentation](https://duplicati.readthedocs.io/en/latest/06-advanced-options/#full-remote-verification) says it looks deeper, opening up the files instead of just checking hashes. It’s not a replacement for high [test](https://duplicati.readthedocs.io/en/latest/04-using-duplicati-from-the-command-line/#the-test-command) samples. Samples, by the way, also [accepts](https://github.com/duplicati/duplicati/blob/94cf55a231f7e72e528bd2e2e97af808d125071c/Duplicati/CommandLine/Commands.cs#L679) `all` or `everything`, if you don’t want to make up your own very-high value.

Discussion is in several posts around [Backup issues following NAS crash - Hash mismatch](https://forum.duplicati.com/t/backup-issues-following-nas-crash-hash-mismatch/5303/11?u=ts678) and I just tested too, using samples of 1 along with --full-remote-verification. I got only one sample-set downloaded, watching the log.

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