Did anyone else see a massive load spike on their LDAP servers after upgrading? Do you run master/slave or multi-master? Zimbra Support is recommending we switch to multi-master but I don't see that making a huge difference to performance, and they haven't so far explained to me the basis for their recommendation.
The MMR recommendation was not a performance recommendation. The recommendation I specifically made when asked was to spin up a 3rd node as a secondary master, and promote the existing replica as a tertiary master. There's no reason for replicas to exist anymore. If you have MMR, you have no single point of failure anymore with the master. I would also advise correctly setting the ldap_url value in particular across your stores so that they evenly disperse load among your ldap servers.
Hope that helps! --Quanah -- Quanah Gibson-Mount Server Architect Zimbra, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration