Tutorials and How-tos/Use Bubba with Time Machine
It is possible to use Time Machine on Mac OS X, but there are a few caveats:
- Apple does not make it easy to use anything other than an Apple Time Capsule or a local disk as Time Machine repository. The exact procedure thus differ for different OS X versions. These instructions apply to Snow Leopard (OS X 10.6.x) only.
- Note that in Snow Leopard it is no longer possible to use SMB volumes (Windows shares) with Time Machine. Your Bubba2 shares must be accessed as Apple (netatalk) shares.
- In the following, it is assumed that a Bubba2 share is mounted as /Volumes/Public share.
Open a terminal window.
Enable the use of "unsupported" (i.e., non-Time Capsule, non-local disks) volumes in Time Machine:
defaults write com.apple.systempreferences TMShowUnsupportedNetworkVolumes 1
Create a local disk image (change the system name to match your system, e.g. "Home iMac" or whatever it's called):
export YOURSYSTEMNAME="REPLACE with YOUR SYSTEM NAME" hdiutil create -size 500G -fs HFS+J -volname 'Time Machine Backups' -type SPARSEBUNDLE "$YOURSYSTEMNAME.sparsebundle"
(You may also change the image size to suit your needs. It is only the maximum size; unless you fill it with backups, the actual size will be far smaller.)
Next, a special property list file called com.apple.TimeMachine.MachineID.plist specifying your platform UUID must be created within the diskimage. Do:
system_profiler SPHardwareDataType | grep UUID
to find out your UUID.
cat > "$YOURSYSTEMNAME.sparsebundle/com.apple.TimeMachine.MachineID.plist" <<EOF <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>com.apple.backupd.HostUUID</key> <string>PLATFORMUUID</string> </dict> </plist> EOF
where the string PLATFORMUUID should be replaced with the UUID you found in the previous step.
Next, move the disk image to the Bubba2 share:
mv $YOURSYSTEMNAME.sparsebundle /Volumes/Public\ share
(This might take a few minutes.)
Finally, open Time Machine and select the Bubba2 Public share as your Time Machine volume.
The above has been distilled from macosxhints.