The master replica is a writable replica type used to initiate changes to an object or partition. The master replica manages the following types of eDirectory partition operations:
- Adding replicas to servers
- Removing replicas from servers
- Creating new partitions in the eDirectory tree
- Removing existing partitions from the eDirectory tree
- Relocating a partition in the eDirectory tree
The master replica is also used to perform the following types of eDirectory object operations:
- Adding new objects to the eDirectory tree
- Removing, renaming, or relocating existing objects in the eDirectory tree
- Authenticating objects to the eDirectory tree
- Adding new object attributes to the eDirectory tree
- Modifying or removing existing attributes
By default, the first eDirectory server on your network holds the master replica. There is only one master replica for each partition at a time. If other replicas are created, they are read/write replicas by default.
If you're going to bring down the server holding a master replica for longer than a day or two, you can make one of the read/write replicas the master. The original master replica automatically becomes read/write.
A master replica must be available on the network for eDirectory to perform operations such as creating a new replica or creating a new partition.
Do NOT confuse Edirectory Master Replica with LDAP Multi-Master Servers. All Edirectory and Read/Write Replica servers are LDAP Multi-Master Servers.