Client-node replication rules apply to every file space
that belongs to a client node. To replicate data according to a client
node rule for a data type, the replication rule that applies to the
data type in a file space must be set to DEFAULT.
About this task
Rules for client nodes are either normal priority or high
priority. In a replication process that includes both normal-priority
and high-priority data, high-priority data is replicated first. If
you issue the REPLICATE NODE command for two or
more clients, all high priority data for all file spaces in the specified
nodes is processed before normal priority data.
Before you select
a rule, consider the order in which you want the data to be replicated.
For example, suppose that a client node contains active backup data
and archive data. Replication of the active backup data is a higher
priority than replication of the archive data. To prioritize the active
backup data, specify the ACTIVE_DATA_HIGH_PRIORITY replication rule
for backup data. Specify the ALL_DATA rule for archive data.
You
can specify the following rules:
- ALL_DATA
- Replicates backup, archive, or space-managed data. The data is
replicated with a normal priority.
- ACTIVE_DATA
- Replicates only the active backup data. The data is replicated
with a normal priority.
Attention: - If you specify ACTIVE_DATA, inactive backup data that belongs
to the client node is not replicated.
- If the replication rule for backup data in any
file spaces that belong to the client node is DEFAULT, inactive backup
data in those file spaces on the target replication server is deleted.
- ALL_DATA_HIGH_PRIORITY
- Replicates backup, archive, or space-managed data. The data is
replicated with a high priority.
- ACTIVE_DATA_HIGH_PRIORITY
- Replicates only the active backup data in client nodes. The data
is replicated with a high priority.
Attention: - If you specify ACTIVE_DATA_HIGH_PRIORITY, inactive backup data
that belongs to the client node is not replicated.
- If the replication rule for backup data in any
file spaces that belong to the client node is DEFAULT, inactive backup
data in those file spaces on the target replication server is deleted.
- DEFAULT
- Replicates data according to the server rule for the data type.
For
example, suppose that you want to replicate the archive data in all
client nodes that are configured for replication. Replication of the
archive data is a high priority. One method to accomplish this task
is to set the file-space and client-node replication rules for archive
data to DEFAULT. Set the server rule for archive data to ALL_DATA_HIGH_PRIORITY.
- NONE
- Data is not replicated. For example, if you do not want to replicate
the space-managed data in a client node, specify the NONE replication
rule for space-managed data.
To display the replication rules that apply to all
file spaces that belong to a node, issue the
QUERY NODE command
and specify
FORMAT=DETAILED.
Remember: File spaces are not displayed for client nodes that
are registered on the source replication server but that have not
completed store operations. File spaces are created only after the
client stores data to the source replication server. Replication rules
for data types in file spaces are automatically assigned values of
DEFAULT.
To change
replication rules for a node, issue one or more of the following commands
on the source replication server: