Comment Re:Backblaze (Score 1) 241
Technically its a bit more complicated. You have to both have the drive plugged in for several hours (I recommend at least 12) *AND* the data needs to have changed on the drive within the past 30 days.
If the drive contains your family's photos from 2004-2012 (for example) - they will delete the drive and you will have to re-push (which WILL push you over your data caps on most ISPs/plans).
To prevent this, you have to do something like create a small text file on the drive and edit it each time you re-connect.
Still, I recommend them, but they could make life easier by either not requiring this or better documenting.
Source: Backblaze customer for many years.