Hi guys, I have an architecture with : 2 masters ( refresh and persist ) a load balanceur in front of the masters (vip main/sorry), to avoid write in the same time on the masters (stability) few consumers use back-mdb openldap version 2.4.45 my huge branche 3181406 entries, data.mdb 7.7G on the main master, 9.1G on the consumers and the sorry master ( use du -h to get the size ) I have three questions : why the size is smaller on the main master ? Sometimes i have to scripts a lot of ldapmodify ( ~100000 ), should i have to set olcDbEnvFlags: writemap olcDbEnvFlags: nometasync for increase performance ? This sets is recommended for production ? stability issues with theses set ? i have no stability issue for now, but considering this two questions, is it recommended to upgrade ? thank's in advance regards Olivier