Currently Being ModeratedMay 1, 2012 5:46 AM (in response to Brandon Garrido)
Across a network connection, Mac OS X cannot be sure what the storage device file system format really is. Buy creating a .sparsebundle, Mac OS X can create a virtual file system on top of just about any storage and have 100% control on the file system features they need to properly implement a Time Machine backup.
Currently Being ModeratedMay 1, 2012 10:16 AM (in response to BobHarris)
Thanks Bob. I always wondered why the backup showed as a file for my Macbook rather than a folder.
Two more questions:
1. Do you know why I'm unable to restore from it if I upgrade my internal drive and install a fresh copy of Snowleopard and then go through the process of restoring from a TM backup? The only TM backup that shows up on my external drive is the Macbook Pro when trying to restore this way. The only way that I've found to restore the Macbook TM backup is boot from the DVD, click on Utilities, and then click on Restore from time machine backup where it shows up on the list.
2. To avoid any issues that come from backing up over a local network or the creation of a virtual file, I think I'm going to buy a separate external drive for the Macbook TM backups. Do you know if I'm able easily transfer the Macbook backups to a new external drive without issues?
Currently Being ModeratedMay 1, 2012 10:42 AM (in response to Brandon Garrido)
Sorry, I do not know how to restore from a networked Time Machine backup. I'm sure there is a way, I've just never had to do it.
Just wondering if you boot into Snow Leopard, then with hard drive attached to the Mac, double click on the .sparsebundle. That should mount the Time Machine backup as a file system. Then maybe try running pointing Time Machine at the now mounted image and enter Time Machine.
I guess you could also keep the disk on the other Mac, and network mount the disk, then again double click on the .sparsebundle and point Time Machine that the now mounted Time Machine backup, then enter the Time Machine utility and restore the files you want.
Again, this is just speculation as I have not done a restore.
Anytime I'm changing my boot disk, I generally use SuperDuper (or Carbon Copy Cloner) to copy the original drive to the new drive. That way I do not need to do a restore from Time Machine.
Currently Being ModeratedMay 3, 2012 11:01 AM (in response to BobHarris)
I also use super duper where I use it for drive upgrades or for archival purposes. I have an old clone backup of my Macbook drive just in case my TM back up doesn't work. I decided this time to see how time machine restores from back up which seems to work fine after reinstalling my original smaller and slower 5400 RPM drive that came with the Macbook. I'm not sure if it's just me or some tweek in the restore but I noticed that it runs faster when it comes to bootup time and opening up apps. The drive that crashed that was previously in my Macbook was a 250GB 7200rpm Hitachi drive that I swapped out of my Macbook Pro.
I'm under the assumption that there's limitations to over the network backups and having my backup stored under the .sparsbundle format. Therefore, I think I'll buy a separate external drive for the Macbook. If I decide to buy a new Mac with Lion or Mountain Lion installed, I really don't want to run into any restore or migration issues if the .sparsbundle back up only allows me to restore from DVD and doesn't allow any migrations options.