Impact And Restrictions - Huawei OceanStor V3 Series Features Manual

OceanStor V3 Series
Remote Replication Feature Guide for Block
Figure 1-7 Remote replication using a consistency group

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
Issue 06 (2018-01-30)
Primary storage
system
Consistency group 01
Remote replication session
01
Primary
LUN01
Remote replication session
02
Primary
LUN02
Remote replication session
Primary
03
LUN03
Consistency group 01
Remote replication session
01
Primary
LUN01
Remote replication session
02
Primary
LUN02
Remote replication session
03
Primary
LUN03
Consistency group 01
Remote replication session
Primary
01
LUN01
Remote replication session
Primary
02
LUN02
Remote replication session
Primary
03
LUN03
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Secondary storage
system
1. Create a consistency group
Secondary
·
Data, log, and change tracking
LUN01
information of a database are
respectively stored on primary LUN01,
primary LUN02, and primary LUN03.
·
Create consistency group 01 in the
Secondary
primary storage system and add the
LUN02
three remote replication sessions to the
consistency group.
Secondary
LUN03
2. The consistency group stops all remote
Secondary
LUN01
·
During synchronization, remote
replication session 02 fails due to a fault.
·
The consistency group stops remote
Secondary
replication sessions 01 and 03
LUN02
immediately.
·
After the fault is rectified, the consistency
group resumes synchronization.
Secondary
LUN03
3. The consistency group protects data
Secondary
LUN01
·
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
Secondary
immediately after the recovery.
LUN02
Secondary
LUN03
Navigator.
1 Feature Description
replication sessions.
availability
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