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Impact and Restrictions
This section describes impact and restrictions of the HyperReplication feature.
Application Restrictions
- HyperReplication of this storage series does not support direct data replication with a storage device from another vendor.
- Because of the LUN identification mechanism used by hosts' operating systems and volume managers, do not map the primary and secondary LUNs of a remote replication pair to the same host. For example, in Oracle ASM, hosts distinguish between LUNs by ASM disk headers and may wrongly identify the primary and secondary LUNs as the same LUN, resulting in data loss on the two LUNs.
- During the creation of a remote replication pair, a LUN mapped to a host cannot be used as the secondary LUN in the pair.
- The ports for the replication links between storage devices cannot be the same as those for the connections between hosts and storage devices or be used as bond ports.
- The maximum data transmission distance supported by synchronous remote replication is 300 km, and the maximum data transmission distance supported by asynchronous remote replication is not restricted.
Compatibility
When using HyperReplication, ensure that the host operating system and multipathing software are compatible with each other. You can query the compatibility using Huawei Storage Interoperability Navigator.