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Chapter 2 — Architecture Overview
For Partitions with a Drive or Drives as the Exporting Controller
The partition WWN is the same as the WWN for the drive. The
See World Wide Names for Fibre Channel Drives on page 66 for more
Fibre Channel Port Configurations
One or both of the external ports on the exporting controller can be used to
provide the network connectivity for the robotics.
Single Port Connectivity The simplest configuration uses only one of the
interface ports on the exporting controller. This configuration works well
when only a single host is connected to the library. When multiple hosts
are connected to the same port, they must share this single communication
path to the robotics. This type of configuration requires the hosts to use
device sharing application software to handle the arbitration for use of the
robotics.
Dual-Path Connectivity (RIM2s only) A slightly more complex
configuration uses both interface ports on the exporting controller with
each connected to a different library partition. Each port is used as an
independent communications path. From a host perspective, each port is
viewed as a unique, independent path to a partition. The two ports can be
connected to the same or possibly different storage area networks (SANs).
The library processes the motion commands and relays them to the
partitions in the order that they are received. This is a way to provide
limited visibility between the partitions. If you have more than two
partitions you can use additional controllers to provide additional
isolation between partitions.
August 2019
commands to control the motion of the robotics within the partition are
sent from the host to the exporting drive's logical unit number 1
(LUN 1). Commands to control the operation of the exporting drive are
sent from the host to LUN 0 of the drive.
information about WWNs for drives.
SAN
Figure 22 Single port network connectivity to the exporting
controller.
Fibre Channel Connectivity
A
Controller
B
User Guide—Spectra T950V Library
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Troubleshooting
