Replication rules are assigned to data types. Data types
include backup data, archive data, and space-managed data that is
migrated by Tivoli® Storage
Manager for
Space Management clients.
The
Tivoli Storage
Manager server
has the following predefined set of replication rules. You cannot
create replication rules.
- ALL_DATA
- Replicates backup, archive, or space-managed data. The data is
replicated with a normal priority. For example, you can assign the
ALL_DATA rule to backup data and archive data, and assign a different
rule to space-managed data.
- ACTIVE_DATA
- Replicates only active backup data. The data is replicated with
a normal priority. You can assign this rule only to the backup data
type.
Attention: If you specify ACTIVE_DATA
and one or more of the following conditions are true, inactive backup
data on the target replication server is deleted, and inactive backup
data on the source replication server is not replicated.
- When a Tivoli Storage
Manager version
earlier than Version 7.1.1 is installed on either the source or target
replication servers.
- When you are using the REPLICATE NODE command
with the FORCERECONCILE=YES parameter.
- When you are running the initial replication of a file space after
you configure replication, restore the database, or upgrade both the
source and target replication servers from a Tivoli Storage Manager
version earlier than V7.1.1.
If the previous conditions are not true, all new and changed
files since the last replication are replicated, including inactive
files, and files are deleted when they expire.
- ALL_DATA_HIGH_PRIORITY
- Replicates backup, archive, or space-managed data. The data is
replicated with a high priority. In a replication process that includes
both normal-priority and high-priority data, high-priority data is
replicated first.
- ACTIVE_DATA_HIGH_PRIORITY
This rule is the same as the
ACTIVE_DATA replication rule except data is replicated with a high
priority.
- DEFAULT
- Replicates data according to the rule that is
assigned to the data type at the next higher level in the replication-rule
hierarchy. The replication-rule hierarchy comprises file space
rules, individual client-node rules, and server rules. Server rules
apply collectively to all nodes that are defined to a source replication
server and that are configured for replication.
Rules that are assigned
to data types in file spaces take precedence over rules that are assigned
to data types for individual nodes. Rules that are assigned to data
types for individual nodes take precedence over server rules. For
example, if the DEFAULT replication rule is assigned to back up data
in a file space, the server checks the replication rule for backup
data that is assigned to the client node. If the client node rule
for backup data is DEFAULT, the server checks the server rule for
backup data.
The DEFAULT rule is valid only for data types at
the file space level and the client node level. It is not valid for
data types at the server level.
For example, suppose that you
want to replicate the archive data in all the file spaces that belong
to a client node. Replication of the archive data is a high priority.
One method to accomplish this task is to specify DATATYPE=ARCHIVE
REPLRULE=DEFAULT for each file space. Ensure that the
client replication rule for archive data is set to ALL_DATA_HIGH_PRIORITY
or to DEFAULT. If the client replication rule is DEFAULT, the server
replication rule for archive data must be set to ALL_DATA_HIGH_PRIORITY.
- NONE
- Backup, archive, or space-managed data is not replicated. For
example, if you do not want to replicate archive data, assign the
NONE rule to the archive data type. If you do not want to replicate
the space-managed data in a file space, specify the NONE replication
rule for space-managed data.
Tip: When you set up the default replication configuration,
you do not have to assign or change replication rules.
Tivoli Storage
Manager automatically
assigns the DEFAULT replication rule to all data types in the file
spaces and in the client nodes that you configured. The system-wide
replication rules are automatically set to ALL_DATA. You can change
file space, client-node, and system-wide rules after you set up the
default configuration.
If a file space is added to a client node
that is configured for replication, the file space rules for data
types are initially set to DEFAULT. If you do not change the file
space rules, the client node and server rules determine whether data
in the file space is replicated.