Impact And Restrictions - Huawei OceanStor 2000 V3 Series Features Manual

OceanStor V3 Series
HyperMetro Feature Guide for Block
Figure 1-5 With a HyperMetro consistency group

1.4 Impact and Restrictions

This section describes the impact and restrictions of HyperMetro feature.
Network Restrictions
For details about network restrictions, see
Issue 05 (2018-01-30)
Local storage array
Before data changes
HyperMetro pair 01
Local
LUN01
HyperMetro pair 02
Local
LUN02
HyperMetro pair 03
Local
LUN03
Consistency group 01
After data changes
HyperMetro pair 01
Local
LUN01
HyperMetro pair 02
Local
LUN02
HyperMetro pair 03
Local
LUN03
Consistency group 01
Data recovery
HyperMetro pair 01
Local
LUN01
HyperMetro pair 02
Local
LUN02
HyperMetro pair 03
Local
LUN03
Consistency group 01
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Remote storage array
Remote
LUN01
Remote
LUN02
Remote
LUN03
Remote
LUN01
Remote
LUN02
Remote
LUN03
Remote
LUN01
Remote
LUN02
Remote
LUN03
HyperMetro Solution
1 Feature Description
1. A consistency group is
created.
·
Data, logs, and
modification information
of a database application
are stored on local
LUN01, LUN02, and
LUN03 respectively.
·
Consistency group 01 is
created on the local
storage array and three
HyperMetro pairs are
added to the consistency
group.
2. The consistency group stops
the replication task.
·
HyperMetro pair 02
encounters a fault during
data synchronization.
·
The consistency group
stops HyperMetro pairs
01 and 03 immediately.
·
After the fault is rectified,
data is replicated.
3. The consistency group
ensures data validity.
After a disaster occurs, the
data on the remote storage
array is used for data
recovery. The data in the
database is valid.
Overview.
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