Parameter
Description
Replication Mode
Mode of the data replication. The values
include:
l
Synchronous
: When data is written on a
primary resource, the write request is
also sent to the secondary resource. Only
after the data is written on both the
primary and secondary resources
successfully, does the host receive a
successful data write message.
Synchronous mode ensures that the data
on the primary resource and secondary
resource synchronizes in real-time.
l
Asynchronous
: When data is written on
a primary resource successfully, the host
receives a successful data write message.
In the meanwhile, the primary site
records the data difference between the
written data and the secondary resource.
In the data synchronization later, only
the different data the primary site
records are synchronized to the
secondary site, reducing the write
latency of application server to the
minimum.
NOTE
File system is only supported by asynchronous
remote replication.
Recovery Policy
A recovery policy supports the following
recovery modes:
l
Manual
: The remote replication pair
enters the
To be recovered
state.
Remote replication must manually
synchronize the data from the primary
resources to the secondary resources.
l
Automatic
: The remote replication pair
enters the
Synchronizing
state. The
system will automatically synchronize
the incremental data from the primary
resources to the secondary resources in
the remote replication.
OceanStor V3 Series
Remote Replication Feature Guide for Block
7 Managing Consistency Groups
Issue 06 (2018-01-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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