Huawei OceanStor V3 Series - 1.4 Impact and Restrictions

Figure 1-7 Remote replication using a consistency group
Secondary storage
system
Remote replication session
01
Remote replication session
02
Remote replication session
03
Primary storage
system
Remote replication session
01
Remote replication session
02
Remote replication session
03
Remote replication session
01
Remote replication session
02
Remote replication session
03
Primary
LUN03
Secondary
LUN01
Secondary
LUN02
Secondary
LUN03
Secondary
LUN01
Secondary
LUN02
Secondary
LUN03
Secondary
LUN01
Secondary
LUN02
Secondary
LUN03
1. Create a consistency group
2. The consistency group stops all remote
replication sessions.
3. The consistency group protects data
availability
· Data, log, and change tracking
information of a database are
respectively stored on primary LUN01,
primary LUN02, and primary LUN03.
· Create consistency group 01 in the
primary storage system and add the
three remote replication sessions to the
consistency group.
· During synchronization, remote
replication session 02 fails due to a fault.
· The consistency group stops remote
replication sessions 01 and 03
immediately.
· After the fault is rectified, the consistency
group resumes synchronization.
· In the event of a disaster, the secondary
storage system recovers data on the
primary storage system. Data in the
primary storage system is available
immediately after the recovery.
Primary
LUN01
Primary
LUN02
Primary
LUN03
Primary
LUN01
Primary
LUN02
Primary
LUN03
Primary
LUN01
Primary
LUN02
Consistency group 01
Consistency group 01
Consistency group 01
Phases in a process in which a consistency group protects data availability
1.4 Impact and Restrictions
This section describes restrictions on the remote replication feature.
Compatibility
When using HyperReplication, ensure that the host operating system, multipathing software,
and the remote storage system are compatible with each other. You can query the
compatibility using the OceanStor Interoperability Navigator.
OceanStor V3 Series
Remote Replication Feature Guide for Block
1 Feature Description
Issue 06 (2018-01-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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