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It is recommended to use redundant switch hardware between the PowerStore system and external clients. For more details about configuring a redundant network, see the document PowerStore Host Configuration Guide on Dell.com/powerstoredocs.
For Fibre Channel connectivity, configure dual redundant fabrics, with each PowerStore node and each external host having connectivity on each of the fabrics. Minimize the number of hops between host and PowerStore.
For performance, load balancing, and redundancy, each host should have at least two paths to each PowerStore node (four paths per PowerStore appliance). It is recommended that a host should have no more than eight paths per volume.
The first two ports of the embedded module 4-port card on each PowerStore node are bonded together within the PowerStoreOS. For the highest performance and availability from these ports, it is recommended also to configure link aggregation across the corresponding switch ports.
With the introduction of PowerStoreOS 3.0, user-defined link aggregations are supported for Ethernet ports. Link aggregations can include 2 to 4 different Ethernet ports. The ports must be on the same node and operate at the same speed. A mirror link aggregation will automatically be created on the peer node. In PowerStoreOS releases prior to 4.0, user-defined link aggregations only support NAS server interfaces. In PowerStoreOS 4.0 and later, user-defined link aggregations also support iSCSI host connectivity and replication.
When using Ethernet for block access to PowerStore volumes (by means of iSCSI and/or NVMe over TCP), each host should have at least two paths to each PowerStore node (four paths per PowerStore appliance). It is recommended that a host should have no more than eight paths per volume.