Currently Being ModeratedMay 22, 2011 7:53 AM (in response to Rippnlips)
How large is your external backup disk ?
It'd better be quite larger than 180-200 GB... Time Machine doesn't behave well when the backup disk isn't large enough.
My rule of the thumb is to have a backup disk of the same size of the startup disk, unless in the Time Machine Options you exclude some significant part of it from the backup set: e.g. large movie folders, Parallels Virtual Machines, and so.
Currently Being ModeratedMay 22, 2011 8:01 AM (in response to PieroF)
Well my first EX HD i tried is a 2TB so i wouldnt think thats the problem. The only folder I really need to copy is my Documents. I have already moved my Pictures and Videos over to another HD. I wonder if I deleted all of them now if that would help?
I wanted to run time machine to copy all my stuff for the chance that my comp got stolen or the HD blew up.
Second EX HD is a 500GB
I do have parallels running on here and it looks like that can cause a problem backing things up. I'm not a mac specialist at all. I know that you can cause more harm that good if you start messing with things too much. I guess its time for the Mac store
Message was edited by: Rippnlips
Currently Being ModeratedMay 22, 2011 8:46 AM (in response to Rippnlips)
OK, the point is how much of your startup drive you want to backup using Time Machine: that size + a good amount (30-40-50% ?) for future use is what you need as an external disk.
If your Documents folder is larger than 400-450GB, an external 500 GB disk might not be enough, if not now easily in the near future.
If you moved your videos and photos to another disk, you'd better delete them from Documents, if you do not want them in the TM. Or as an alternative you can keep them on your startup disk but you must then prevent TM from backing them up by using TM Options in its Preferences panel: just add yourHome/Documents/Images and yourHome/Documents/Movies to that panel.
Parallels is not a problem by itself. But if you don't disable TM over its many GB virtual machines files, TM will backup these files by unnecessarily slowing down your system at any even minor change in the VM. Personally I disable TM over the Parallels VMs, and back them up manually when I feel useful.
Currently Being ModeratedMay 22, 2011 8:51 AM (in response to PieroF)
Thanks for the tip. Well I'm running it yet again as we speak. I excluded the documents folder, which was the biggest (80GB) to see if that helps. I dont know TM that well and i'm wondering if i get everything BUT the documents this time can i back EVERYTHING up the next time? Or do i have transfer the documents folder by itself?
Currently Being ModeratedMay 22, 2011 9:08 AM (in response to Rippnlips)
Sorry I'm not sure I understand your question now.
Let me try: if you excluded your Documents folder and TM now works, your backup size was likely the problem.
So if you simply remove Documents from the TM exclusion list you will run back into the size problem... no good.
If you first delete the large contents from the documents folder on your startup disk, then you can ask TM to backup again the Documents folder by removing it from the TM exclusion list, but obviously only what remains there (not the deleted material) will be saved by TM.
In other words, if you want to keep your 80 GB files on your startup disk, either you do not backup them or you use a larger backup disk. Otherwise you may remove the 80 GB from your startup disk; but now you probably want to keep 2 copies of them in 2 different external disks, for safety reasons, without using TM.
Did I answer your question ?
Message was edited by: PieroF