Recommended configurations:
A Cluster over Ethernet with Open-E JovianDSS is built of two nodes. Each node has its own hard drives attached directly to the node. The solution allows for using a commodity server that is made up of only SATA drives.
All hard drives on one node are shared with the other node, and the whole configuration works almost like a regular cross-linked cluster connection.
However, instead of a direct connection of HDDs to both nodes, they are directly connected to one node and (after internal conversion of the protocol) indirectly served over Ethernet to the other node. Each node can see all the hard drives in the cluster. The other node’s drives are marked as ‘Remote Disks’.
In order to achieve cluster redundancy users are required to create mirrors between local and Remote Disks.
Since the connection of cluster communication and data mirroring between nodes works over Ethernet, the nodes might be located a very long distance apart (as a metro storage cluster or a stretched metro storage cluster). It can be 50 miles (80 km) in case of point to point fibre optic connection, or even more when using an additional switch between nodes - provided that network latency will not exceed 5 ms.
Other possible configurations:
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