A few questions

[Harry Sufehmi <milis-2@harrysufehmi.com>]

At the moment I'm trying to implement OpenLDAP -> AD sync and OpenLDAP 
-> OpenLDAP sync.
A few days ago I was a total OpenLDAP newbie though, but I'm trying hard 
to rectify this, especially since my manager has expressed his interest 
on OpenLDAP to be used in our 15,000+ users IT infrastructure.

Reading OpenLDAP admin guide has raised a few questions / need for 
clarifications, which I hope somebody here can help me with :

# I read that slapd can only function as LDAP Sync provider only when 
it's configured with either back-bdb or back-hdb.
Is this still the case with version 2.2.17 / 2.2.18 ?

# Quote from chapter 14.2 : "Multiple replicas of single provider 
content share the same per-scope session log".
Does this mean that if one of the replicas are down for a period of 
time, it may risk missing any updates occuring within that time ?

# It seems that it's possible to implement a multi-master replication 
with OpenLDAP, by getting all the master servers to do 2 way sync with 
each other.
Do please feel free to correct me if I'm wrong.

# Is there any good HOWTO on doing OpenLDAP -> AD sync ?
I can try to figure this out myself, but it'll help tremendously if 
there's already a good documentation on the subject.

TIA.

Thanks,
Harry