This feature enables you to simultaneously run volumes in the active mode on two nodes - providing high availability of data. If one node fails, the other one takes over automatically and all application services continue to run without interruption. Once the failed node is available again in the resource pool, the storage administrator can move the activity of selected volumes back to the node of choice.
Thanks to the Active-Active functionality, overall cluster performance is improved since the read, write and replication traffic can be balanced on both nodes. Within just a few minutes, you will have up to several hundred gigabytes available on your network - without much effort and no downtime.
Active-Active Automatic Failover for iSCSI is a crucial Data Storage functionality used for:
- High Availability
- Cloud Storage
- Storage for Virtualization
- Business Continuity
Active/Passive Failover iSCSI is standard supported in DSS v7 without this "Active/Active" Feature license. Please note below differences:
Active/Passive: The same ressource pool (with different volumes) is automatically replicated to a second system, which is in passive standby mode waiting to take over control.
Active/Active: Different ressource pools (with different volumes) on both systems are automatically replicated to each other, where both nodes are in the "operational mode",
balancing read, write and replication traffic, which significantly improves overall cluster performance.
Recommendation for both solutions: A direct link between two systems established by 10Gb network. 1Gb network interconnection can be used for smaller traffic / users / volume configurations.
Definition "Ressource Pool": A Ressource Pool shows the state of ressources of the local and the remote node.