Another term for "Master Slave"
Solution 1:
There was some controversy over this back in 2003 when Los Angeles Country asked manufactures/suppliers to stop using it.
This ultimately led different software platforms (like Drupal) to adopt, in 2014, the terms:
primary/replica
Other possible phrases that I like include:
- parent/child
- leader/follower
For more information: http://en.wikipedia.org/wiki/Master/slave_(technology)
Solution 2:
In technology, there's "controller/peripheral".