Hello, The setup is the following : 4 mysql server, today using replication, around 600 con / per server. The issue is that the write is overloaded and It's not possible to change the app. I was looking at two approaches. 1) Multiple write servers and GFS I would like to know if this possible to use multiple write server on the same database, using external lock parameter on mysql to ensure data integrity. Does someone has setup a multiple write mysql server using GFS ? 2) MySQL clustering My only fear is that the solution is very young and storage engine does not support some characteristics of the db schema (ie full text index). Any advice will be appreciated. Thks Benoit