Principles; Related Concepts - Huawei OceanStor V3 Series Features Manual

OceanStor V3 Series
Remote Replication Feature Guide for Block
Product Series
OceanStor 6000 V3 series
OceanStor 2000 V3 series
a: 6900 V3 is no longer supported in V300R002 and later versions.
Compatible Software
Product
OceanStor BCManager eReplication
(BCManager eReplication for short)
a: To obtain the software installation package, log in to
enterprise/, in the search field, enter OceanStor BCManager, and select a path from the
paths that are automatically displayed to go to the document page. Then click the
Downloads tab, and search and download your desired software files.
For asynchronous remote replication, it is advised to use the BCManager eReplication disaster recovery
software if the synchronization interval is longer than 15 minutes. Because a host's cached data may not be
completely delivered to the storage system when synchronization is triggered, data synchronized to the
remote end may be inconsistent with that at the local end. BCManager eReplication can ensure data
consistency between hosts at both ends. For details about BCManager eReplication, see the related User
Guide and Compatibility List.

1.3 Principles

This section describes how the remote replication feature replicates data, switches services,
and recovers data, and introduces the function of a consistency group.

1.3.1 Related Concepts

This section describes concepts related to the remote replication feature, including pair,
consistency group, synchronization, splitting, primary/secondary switchover, data status and
writable secondary LUN.
As shown in
Issue 06 (2018-01-30)
NOTE
Figure 1-1, a remote replication task is implemented in five phases.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Product Model
OceanStor 6800 V3/6900
a
V3
OceanStor 2200 V3/2600
V3
Version
a l V200R001C10 (applicable to storage
system V300R006C00)
l V200R001C20 (applicable to storage
system V300R006C10)
1 Feature Description
Version
V300R001 and later
V300R005 and later
http://support.huawei.com/
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