== slurpd, multi-master, syncreply == OpenLDAP slurpd is now generally considered a bad choice for the replication of LDAP data and multi-master replication is not an option either as it has [http://www.connexitor.com/forums/viewtopic.php?t=10 design flaws]. In OpenLDAP 2.3, [http://www.openldap.org/doc/admin22/syncrepl.html syncrepl] should be used instead of slurpd. == OpenLDAP MirrorMode == A brand new feature called '''MirrorMode''' will be available in the next major release 2.4 of OpenLDAP. Release 2.4 will have the new MirrorMode feature for active server-to-server replication used in high-availability environments.

Abstract

We recently had the possibility to setup a host machine with multipath I/O. Our main goal by performing these tests was not performance but reliability of the SAN connection. Until recently, every hostbus adapter vendor implemented I/O multipathing in a proprietary way in the card's drivers. With QLogic cards, this proprietary handling of multipathing has been deprecated starting with the version 8 drivers (see below). DM MPIO is the preferred form of MPIO on SLES9 and the only option completely supported by Novell SuSE.