One-to-one, active/active, One-to-one, active/active -8 – HP Storage Mirroring V5 Software User Manual
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One-to-One, Active/Active
Description
Each machine acts as both a source and target actively replicating data to each other.
Applications
This configuration is appropriate for failover and critical data backup. This configuration is more
cost-effective than the Active/Standby configuration because there is no need to buy a dedicated target
machine for each source. In this case, both machines can do full-time production work.
Considerations
Coordination of the configuration of Storage Mirroring and other applications can be more complex
than the Active/Standby configuration.
During replication, each machine must continue to process its normal workload.
Administrators must avoid selecting a target destination path that is included in the source’s
replication set. Any overlap will cause an infinite loop.
To support the production activities of both machines during failover without reducing performance,
the failover target machine should have sufficient disk space and processing resources.
Failover and failback scripts must be implemented to avoid conflict with the existing production
applications.
Source and Target
Target and Source
Machine
(Active)
(Active)
Source
Data 1
Replicated
Data 1
Replicated
Data 2
Source
Data 2
Machine