HPE 3PAR StoreServ 9000 Customer Self Install Manual page 30

Procedure
• Connect a cable between a port on a host adapter (FC/iSCSI) and a switch or directly to the host; one
or more cables per controller node. Hewlett Packard Enterprise recommends connecting each host to
both controller nodes in a controller nodes pair (node pair: 0/1 or 2/3) using the same port number on
the FC/iSCSI host adapters to provide redundancy. At the rack rear, neatly route and secure the
cables along the left side of the rack. When possible, route and secure host cables towards the rear of
the rack, separated from the internally routed SAS cables.
Recommended configurations for FC/iSCSI host connectivity
For optimal redundancy and I/O load balancing, Hewlett Packard Enterprise recommends the
guidelines for connectivity from any given host-server (host) to the controller node pair (node pair) on
the storage system:
◦ Depending on the number of host ports available, balance the host-server ports across both
controller nodes in the node pair of the storage system at a minimum.
◦ From any given host, make a pair of connections from any given host to the same numbered slot
and port (partner port) on each controller node in the node pair.
◦ If more than one host connection can be made per controller node, distribute connections of the
same type (for example, FC) from any given host across host adapters in different slots (where
available) on any given controller node.
NOTE: To provide redundancy and to permit online software upgrades, both controller nodes in a node
pair (for example, controller nodes 0 and 1 or controller nodes 2 and 3) must maintain connections to
each host server.
Host connectivity using a switch
◦ For an Ethernet switch, the recommended configuration for the connection is from the Ethernet
switch or hub to two controller nodes (node pair).
◦ For an FC switch, you must set up FC fabric zoning to restrict WWNs seen by the system.
NOTE: With HPE 3PAR File Persona or HPE 3PAR Remote Copy, an additional Ethernet connection
is required.
See "Supported Network Topologies" in the HPE 3PAR StoreServ 9000 Storage Site Planning Manual
available at the Hewlett Packard Enterprise Information Library website:
www.hpe.com/info/storage/docs
30 Cabling the factory-integrated-in-rack option: Process overview