Removing node without replication and without data lost

if i will remove node with rebalance like so
couchbase-cli rebalance -c -u Administrator -p password --server-remove=

will data be lost if there is no replication set?


The real question is: why you do not have any replication set?
When your are working on a distributed system you must use replication.


You need replica to be able to remove a node, the rule of thumb is : you need replica all the time to work on a distributed system!