How long should a "Quick" restore really take?

I’m resetting my NAS to factory defaults and selected the Quick Restore option, the support pages say it should take upward of 10 minutes, that’s pretty broad.

Mine has been going for about 30 minutes now and it’s still just showing 0%. How do I know if it’s actually doing anything?

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It appears that did nothing, I refreshed the page after nothing happened there was no activity on the unit so I just shut it down. I’ll attempt this again some other time.

Thought I’d update my own thread with my findings.

Started this again yesterday and it basically took all day and all night, probably around 10 hours to complete. The documentation that says upwards of 10 minutes is correct but highly misleading.