I'm trying to add a 2nd Server into an existing tree - this has failed

I inherited this system and I'm not sure how to fix this.
No Dsrepair so I'm a bit lost!

Had a look at Web based iMonitor which reports Replica Master is down

The system was UPGRADED from Netware 6.5 earlier this year by adding a OES11
Server into the Tree. Groupwise and user data were tranferred to the OES

The Netware box died (failed SCSI controller) within days of the OES going
live and since the OES box was running... so just left.

I need to make the OES server the Replica master - can someone point me in
the right direction please.