Seagate RealStor 5005 Series Hardware Installation page 43

IMPORTANT: Use the CLI set host-port-mode command to set the host interface protocol for CNC ports using
qualified SFP options. 5005/4005 Series models ship with CNC ports configured for FC. When connecting CNC ports to
iSCSI hosts, you must use the CLI (not the SMC) to specify which ports will use iSCSI. It is best to do this before inserting
the iSCSI SFPs into the CNC ports (see
Fibre Channel protocol
5005/4005 Series FC controller enclosures support two controller modules using the Fibre Channel interface protocol for
host connection. Each 5005/4005 FC controller module provides four host ports. CNC ports are designed for use with an
FC SFP supporting data rates up to 16Gb/s.
The controllers support Fibre Channel Arbitrated Loop (public or private) or point-to-point topologies. Loop protocol can
be used in a physical loop or for direct connection between two devices. Point-to-point protocol is used to connect to a
fabric switch. Point-to-point protocol can also be used for direct connection, and it is the only option supporting direct
connection at 16Gb/s. See the CLI set host-parameters command within the CLI Reference Guide for command syntax
and details about parameter settings relative to supported link speeds. Fibre Channel ports are used for attachment to
FC hosts directly, or through a switch used for the FC traffic. The host computer must support FC and optionally,
multipath I/O.
TIP: Use the SMC Configuration Wizard to set FC port speed. Within the Storage Management Guide, see the topic
about configuring host ports. Use the CLI set host-parameters command to set FC port options, and use the CLI show
ports command to view information about host ports.
10GbE iSCSI protocol
5005/4005 Series 10GbE iSCSI controller enclosures support two controller modules using the Internet SCSI interface
protocol for host connection. Each 5005/4005 10GbE iSCSI controller module provides four host ports. CNC ports are
designed for use with a 10GbE iSCSI SFP supporting data rates up to 10Gb/s, using either one-way or mutual CHAP
(Challenge-Handshake Authentication Protocol).
The 10GbE iSCSI ports are used in either of two capacities:
• To connect two storage systems through a switch for use of replication.
• For attachment to 10GbE iSCSI hosts directly, or through a switch used for the 10GbE iSCSI traffic.
The first usage option requires valid licensing for the replication feature, whereas the second option requires that the
host computer supports Ethernet, iSCSI, and optionally, multipath I/O.
TIP: See the topic about configuring CHAP in the Storage Management Guide.
TIP: Use the SMC Configuration Wizard to set iSCSI port options. Within the Storage Management Guide, see the topic
about configuring host ports. Use the CLI set host-parameters command to set iSCSI port options, and use the CLI
show ports command to view information about host ports.
1Gb iSCSI protocol
5005/4005 Series 1Gb iSCSI controller enclosures support two controller modules using the Internet SCSI interface
protocol for host port connection. Each 5005/4005 1Gb iSCSI controller module provides four host ports. The CNC ports
are designed for use with an RJ-45 SFP supporting data rates up to 1Gb/s, using either one-way or mutual CHAP.
"Change the CNC port mode" (page 51) for instructions).
Connecting the enclosure to hosts 43