Share Time Machine via iMac

I have an external hard drive connected to my iMac for Time Machine. Recently I've bought a Macbook Pro and I would like to make backups using the same external hard drive.
1. Is it possible for 2 machines to make backups on one hard drive without overwriting each others data?
2. If 1 is possible, how to set this up?
Thanks!
Martijn

1. Time Machine can backup any number of machines to a single backup drive provided it's large enough to accommodate multiple machines. A TM backup drive should have at least twice the capacity of the drive or drives backed up.
2. Turn on File Sharing so your MBP can access your iMac and its connected drives. Open TM preferences on the MBP, click the button to designate a backup drive, locate the drive in the device list and select it for the backup drive. Be sure to exclude other drives from its backup. Ideally you want to do this over Ethernet because wireless is painfully slow.
Alternatively, move the backup drive to the MBP and set up for a normal TM backup. Move the drive back and forth as you require. TM will keep up with the moves.
See User Tips for Time Machine for help with TM problems. Also you can select Mac Help from the Finder's Help menu and search for "time machine" to locate articles on how to use TM. See also Mac 101- Time Machine.

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    Message was edited by: imaginary_forest

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    Message was edited by: V.K.

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