Huawei OceanStor V3 Series Features Manual page 57

OceanStor V3 Series
Remote Replication Feature Guide for Block
2.
Step 7 Optional: Add the remote replication pair to a newly created consistency group.
Issue 06 (2018-01-30)
Parameter
Initial
Synchronization
Set the I/O timeout
threshold for the
secondary LUN
Timeout Threshold
(second)
Click Next.
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Description
This parameter refers to the mode of
initial data synchronization between the
primary and secondary resources. The
value can be:
– Data is inconsistent between the
primary and secondary resources.
After a remote replication task is
created, the system automatically
performs data synchronization.:
After the remote replication task is
created, the data on the secondary
resource is overwritten immediately.
Ensure that the data on the secondary
resource is no longer necessary or
has been backed up. (default value)
– Data is inconsistent between the
primary and secondary resources.
After a remote replication task is
created, manually perform data
synchronization.: After the remote
replication task is created, manually
synchronize data on the primary and
secondary resources as soon as
possible to ensure data consistency.
– The data on primary and
secondary resources is consistent
and data synchronization is not
required.: Ensure that the data on
the primary and secondary resources
is consistent. If the data is
inconsistent, the secondary resource
cannot be used to recover data or
take over services from the primary
resource when the primary resource
fails. As a result, data loss and
service interruption may occur.
If the data is not written into the
secondary LUN successfully after the
timeout you set, the remote replication
pair enters the Interrupted status.
Timeout threshold that data is not
written to the secondary LUN
successfully.
3 Configuring Remote Replication
Value
[Default value]
Data is inconsistent
between the primary
and secondary
resources. After a
remote replication
task is created, the
system
automatically
performs data
synchronization.
[Default value]
Disable
[Default value]
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