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Included as another standard feature of the IBM XIV Storage system is Remote Mirroring for Disaster Recovery. The XIV system's remote mirroring capability provides a flexible, cost effective, simple to implement, and simple to test solution for a disaster recovery site. The IBM XIV system's remote mirroring provides total protection, even against complete site failure situations. The IBM XIV system offers synchronous remote mirroring with broad support: • Mirroring can be performed over FC or iSCSI
• The mirroring protocol is agnostic to the host protocol (allows mirroring via iSCSI volumes served by FC, and vice versa)
• Simple and intuitive management for changing roles
• Testing of a secondary site without stopping the mirroring
• Low granularity – any to any volume replication
• Every IO is committed to local and remote copies before completion
• Various policies upon link failure
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