Create a backup ldap server

Hi,

We have a ldap server which has been running for a couple years now, and I was told to make a fallback / backup ldap server. So should the old one fail we won’t be officially screwed. Does anyone know where I should look into this, I’ve tried googling it a bit but somehow I haven’t been really able to find any good howtos.

Search on the terms “LDAP replication”.