Configuring port attributes, Configuring, Configuring port – HP XP Continuous Access Software User Manual
Page 144
•
Display status of logical paths (see
“Viewing the Status of Logical Paths” (page 152)
).
•
Delete the relationship between the primary and the secondary storage systems (see
the Relationship Between Primary and Secondary Storage Systems” (page 158)
).
Note: Throughout this chapter, the primary and the secondary storage systems are sometimes
referred to as local storage systems or remote storage systems. If you are logged in to the primary
storage system and are using XP Continuous Access Journal, the primary storage system is a local
storage system and the secondary storage system is a remote storage system. If you are logged
in to the secondary storage system and are using XP Continuous Access Journal, the secondary
storage system is a local storage system and the primary storage system is a remote storage system.
Note: When performing system configurations, the administrator also needs to configure journal
groups. For detailed information about configuring journal groups, see
.
Configuring Port Attributes
The administrator at both the primary site and the secondary site must configure ports on the primary
storage system and the secondary storage system in the following ways:
•
The administrator at the primary site must configure target ports, initiator ports, and RCU target
ports on the primary storage system.
•
The administrator at the secondary site must configure initiator ports and RCU target ports on
the secondary storage system.
Ports on the storage system have the target attribute by default. If you are configuring storage
systems, you must determine which ports should be used as initiator ports or RCU target ports, and
then you must change the attribute for the ports from target to initiator or RCU target. The port
attributes are explained below:
•
Target: A target port is a Fibre Channel port used for connecting a storage system and a host.
When the host issues a write request, the request is sent to a volume via a target port on the
storage system. Target ports must be configured on the primary storage systems for XP
Continuous Access Journal operations.
•
Initiator: An initiator port is a Fibre Channel port that sends commands to a remote storage
system. Initiator ports must be configured on both the primary and remote storage systems for
XP Continuous Access Journal operations.
•
RCU target: An initiator port is a Fibre Channel port that receives commands from a remote
storage system. RCU target ports must be configured on both the primary and remote storage
systems for XP Continuous Access Journal operations.
•
External: An external port is a port that is required for XP External Storage copy operations.
This port is not used for XP Continuous Access Journal copy operations.
If necessary, you can change this port to a target port, initiator port, or RCU target port.
•
Initiator/external: This setting shows the combination of ports that have an initiator port and
an external port attribute. Only a port that has an initiator port attribute within these ports can
be used for XP Continuous Access Journal. This attribute cannot be changed by XP Continuous
Access Journal. For details on the port to which the initiator/external mix mode is set, see the
HP XP24000/XP20000 External Storage Software User Guide.
If initiator ports and RCU target ports are not configured on both the primary and remote storage
systems, the following problems occur and remote copy operations are not performed:
•
The administrator at the primary site will be unable to create a pair of a primary data volume
and a secondary data volume.
•
The secondary storage system will be unable to read data from journal volumes in the primary
storage system.
144 Configuring Storage Systems and Logical Paths