HP 3PAR StoreServ Concepts Guide: HP 3PAR OS 3.1.3

◦ StoreServ 10000 ports are numbered from bottom to top in a node in the lower chassis.
In the upper chassis, ports are numbered from top to bottom.
◦ StoreServ 7000 ports are numbered 1–4 from left to right in a node in the lower node
enclosure. In the upper node enclosure, slots are numbered 1–4 from right to left.
For information about controller nodes, see “HP 3PAR Storage System Hardware” (page 64).
For more information about physical port and HBA locations, see the Physical Planning Manual
for your system model.
Port Target, Initiator, and Peer Modes
The system controller node ports operate in different modes. Depending on the type of port, the
port may operate in target, initiator, or peer mode.
FC ports use the following firmware mode settings:
• Target mode for ports that connect to hosts and receive commands from those hosts.
• Initiator mode for ports that connect to the system physical disks and send commands to those
disks.
• Initiator mode for remote copy over FC (RCFC).
iSCSI ports use the following firmware mode settings:
• Target mode for ports that connect to hosts and receive commands from those hosts.
Gigabit Ethernet ports use the following firmware mode setting:
• Peer mode for Ethernet ports, used for RCIP.
FCoE ports use the following firmware mode settings:
• Target mode for ports that connect to hosts and receive commands from those hosts.
Use the HP 3PAR CLI or the HP 3PAR Management Console to view or change the current port
mode settings. For instructions on viewing or changing mode settings, see the HP 3PAR Command
Line Interface Administrator’s Manual and HP 3PAR Management Console Online Help.
Active and Inactive Hosts
An active host is a host that is connected to a system port and recognized by the HP 3PAR OS.
Under normal operation, an active host may have a number of volumes exported to it and therefore
the host has access to those volumes.
An inactive host is a host that is known to the HP 3PAR OS but is not recognized as being connected
to any system port at the moment. This may be because the host is currently disconnected from the
system port, because the host is offline, or because of an error condition such as link failure.
When a host on a system port becomes inactive for any reason, the following happens:
1. The HP 3PAR OS recognizes that the host is missing on the port and changes the state of the
host from active to inactive.
2. The VLUNs become templates until the host returns. They do not remain in an active state while
the host is unavailable.
3. When the host reappears on the same port, the VLUNs are converted from a template to an
active state.
Adding and Removing Hosts
The HP 3PAR OS administration tools allow you to create, modify, and remove FC and iSCSI host
paths and their properties. When you create a new host, you can assign WWNs or iSCSI names.
A virtual volume that is exported to a host is exported to all the WWNs that make up the host. If
you need to export virtual volumes to particular host computer WWNs or iSCSI names, you can
30 Ports and Hosts