Huawei OceanStor V3 Series Features Manual page 114

OceanStor V3 Series
Remote Replication Feature Guide for Block
Parameter
Secondary Resource Data
Status
Status of Secondary
Resource Protection
Data Transmission
Compression Status
Issue 06 (2018-01-30)
Description
Status of the secondary resource. The data status between
the primary resource and secondary resource includes:
l Synchronized: Data in the secondary resource is the
same as that in the primary resource. Data availability is
the highest.
l Consistent: Data in the secondary resource is a
duplicate of the data in the primary resource (at the time
the latest successful synchronization starts). In this state,
data in the secondary resource is available but not
necessarily the same as the current data in the primary
resource.
l Inconsistent: Data in the secondary resource is not a
duplicate of the data in the primary resource (at the
current point in time or at the time the previous
synchronization is ended). In this state, data in the
secondary resource is unavailable. You can synchronize
the data to ensure data consistency between the primary
resource and secondary resource.
NOTE
Synchronized is only applied for synchronous remote replication.
The data status of secondary resource protection includes:
l Read-only: Data of the secondary LUN is only readable.
l Read/Write: Data of the secondary LUN is readable and
writable.
During primary and secondary resource synchronization,
data is compressed or not. If it is data compression
transmission, replication links are with lower bandwidth
pressure, while improving the replication performance. The
values include:
l Compression
l No compression
NOTE
This parameter is available when Replication Mode is set to
Asynchronous.
If the status displays as Valid, indicating data compression
transmission is available for the remote replication. If the
status displays as Invalid, indicating data compression
transmission is not available or data compression
transmission is not selected for the remote replication.
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6 Managing Remote Replication
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