Time Capsule 3TB - Time Machine use with multiple iMacs
I set up a new AirPort Time Capsule 3TB and backed up my iMac using Time Machine. Now I want to back-up the other iMacs in my office. When I went to the second iMac to do the initial back-up I eventually reached the following message. I don't understand the question being asked. Does this mean it will replace my data from the first iMac I backed up?
The second iMac has never been backed up due to lack of space on my old 500GB Time Capsule (2009).
iMac, OS X Mavericks (10.9), Magic mouse