Comparison of mirroring methods
The information in the following table compares the various methods that you can use to mirror your volumes.
Description | Local volume mirroring | Metro Mirror | Global Mirror |
---|---|---|---|
Number of sites that host application data | 1 | 21 | 21 |
Support multipathing failover between mirrored copies with no application impact | Yes | No | No |
Maximum distance between copies | Within data center | Up to 300 km2 | Up to 8000 km2 |
Host completion that is delayed by secondary write operation | Yes | Yes | No |
Bandwidth that is required on inter-site link | Not applicable | Maximum peak write bandwidth | Varies3 |
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