Q: Time Machine on a NAS and Snapshots Questions
Hello Guys,
I have a doubt on How the Time Machine works. I have been reading a lot of stuff about this but I did`t get my answer.
I am using a macbook pro 15" at home and a NAS WD Mycloud Mirror 6TB, I set everything to do the Time Machine backups on a 521GB partition of the NAS.
So I understand when I am not at home, the macbook keeps doing the backups and saving in the SSD drive, those are the local snapshots, BUT when I am at home I thought the backups were done only in the NAS, but It seems in my case the backups have been done both in the NAS AND in the Macbook Pro SSD. I enabled the Time Machine 3 days ago (but in fact I already have some old backups in it), and used the notebook for the past 3 days ONLY at home, but look at how big are local snapshots 134GB, is this normal? I mean wasn't this supposed to be only in the NAS, as I stayed home all the time?
So my two questions are:
- When I am at home, Should Time Machine record the backups both in Local Snapshots and the Nas? Or just in the NAS?
- If I am away from home and the Time Machine did the backups in the local SSD, snapshots, What happens when I get home? Does Time Machine copy all these local snapshots to the NAS? Or it keeps only in the SSD?
MacBook Pro, OS X Yosemite (10.10.3)
Posted on Apr 27, 2015 8:30 AM
I don't think I've read anything that indicated they stop when you have a Time Machine drive available.
The storage display can be incorrect if your Spotlight index is corrupt or incomplete.
This seems to indicate they are just copied to the Time Machine drive, not deleted after: About Time Machine local snapshots - Apple Support
After your backup drive becomes available, Time Machine copies the local snapshots from your startup drive to your backup drive so that they're stored in both places. You can recover files from local snapshots even when you're away from your backup drive.
Pondini's FAQ has some more info, but does not directly answer the question.
Posted on Apr 27, 2015 9:10 AM
