Dear My english is poor but after several research i will not really understand how the replication works. I have created 3 clusters server that share 2 directories in cluster/replicate mode /home/replicate /home/replicate2 each server mount the pool clusters in /mnt/replicate and /mnt/replicate2 if i add a file in /home/replicate in one node, nothing happen in others node. The file is not added in the desired folder /home/replicate on others nodes. But if a do an "ls mnt/replicate" in the mounted directory the file is correctly added on all nodes. did i must cron the "ls" in order to execute the replication ? did the cluster mode is not in "real time" and this is the standard procedure ? best regards