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Managing Partitions and Replicas
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When you delete replicas, keep the following guidelines in mind:
• For fault tolerance, you should maintain at least three replicas of each partition on different
servers.
• Deleting a replica deletes a copy of part of the directory database on the targeted server.
The database can still be accessed on other servers in the network, and the server that the
replica was on still functions in eDirectory.
You cannot delete or manage subordinate reference replicas. They are created automatically on
a server by eDirectory when the server contains a replica of a partition but not of that partition’s
child.
To delete a replica:
1
In Novell iManager, click the
Roles and Tasks
button
.
2
Click
Partition and Replicas
>
Replica View
.
3
Specify the name and context of the partition or server that holds the replica you want to delete,
then click
OK
.
4
Click to the left of the replica you want to delete.
5
Click
OK
.
5.5.3 Changing a Replica Type
Change a replica type to control access to the replica information. For example, you might want to
change an existing read/write replica to a read-only replica to prevent users from writing to the
replica and modifying directory data.
You can change the type of a read/write or a read-only replica. You cannot change the type of a
master replica, but a read/write or read-only can be changed to a master, which automatically
changes the original master to a read/write replica.
Most replicas should be read/write. Read/write replicas can be written to by client operations. They
send out information for synchronization when a change is made. Read-only replicas cannot be
written to by client operations. However, they are updated when the replicas synchronize.
You cannot change the replica type of a subordinate reference. To place a replica of a partition on a
server which currently has a subordinate reference requires an Add replica operation. A subordinate
reference replica is not a complete copy of a partition. The placement and management of
subordinate reference replicas is handled by eDirectory. They are created automatically on a server
by eDirectory when the server contains a replica of a partition but not of that partition’s child.
To change a replica type:
1
In Novell iManager, click the
Roles and Tasks
button
.
2
Click
Partition and Replicas
>
Replica View
.
3
Specify the name and context of the partition or server that holds the replica you want to
change, then click OK.
4
Click the replica type (in the Type column) of the replica you want to change.
5
Select a new replica type, then click
OK
.
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