HP StorageWorks XP24000 Continuous Access Journal Software User and Reference Guide, v01 (T5278-96001, June 2007)

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100

Conﬁguring Port

Attributes

The administra

torat boththe primarysiteand thesecondarysitemust conﬁgure ports on the primary

storage system

and

the secondary storage system in the following ways:

• The adm inistrator at the p rimary site must conﬁgure target ports, initiator ports, and RCU target

ports on the primary storage system.

• The administr

ator at the secondary site must conﬁgure initiator ports and RCU target ports on the

secondary storage system.

Ports on the storagesystemhavethe target attribute by default. If you are conﬁguring storage systems,

you must determine which p o rts should be used as initiator ports or RCU target por ts, and then you

must change the attribute for the ports from target to initiator or RCU target. The port attributes are

explained be

low:

• 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 will be sent to a volume via a target port on the

storage system. Target por ts must be c onﬁgured on the primary storage systems for Continuous

Access Jour

nal

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 a nd remote storage systems for

Continuous Access Journal operations.

• RCU target

An initiator port is a Fibre Channel port that receives commands from a remote

storage s

ystem. RCU target por ts must be conﬁgured on both the primary and remote storage

systems f

Continuous Access Journal operations.

• External: An external po rt is a po rt that is required for External Storage copy operations. This

port will not be used for Continuous Access Journal copy operations.

necessary, you can change this port to a target port, initiator port, or RCU target por t.

• Initiat

or/external: This setting shows the combination of ports that have an initiator por t and

an external port attribute. O nly a port that has an initiator port attribute within these ports can

be used for Continuous Access Journal. This attribute cannot be changed by the Continuous

Access Journal. For details on the port to which the initiator/external mix mode is set, see the HP

Storag

eWorks XP24000 External Storage Software User’s Guide.

Note

initiator ports and RCU target ports are not conﬁgured on both the primary and remote storage

syste

ms, the following problems will occur and remote copy operations will not be performed:

• The administrator at the primary site will b e unable to create a pair of a primary data volume

and a secondary data volume.

• The se

condary storage system will be unable to read data from journal volumes in the primary

storage system.

WARNING:

Before changing a Fibre Channel por t to an initiator port, disconnect the port from the host,

release a ll affected data volume pairs, delete all logical paths from the initiator port to the remote storage

system, and then remove all channel paths to the por t.

WARN

ING:

Before changing a Fibre Channel port from an initiator to a target or RCU target, release all

aff

ected data volume pairs, delete all logical paths from the initiator port to the remote storage system,

andthendisconnect thelocal storagesystemand theremotestorage system.

Caution:

Limit the number of hosts connected to a target por t to 128 or fewer to avoid a mistaken

disconnection. If more than 128 hosts are connected to a target port, some hosts may be disconnected

after changing the type from target to RCU target.

Note:

The port assigned to an SLPR other tha n SLPR0 can be set to the Target por t attribute only.

To conﬁgure attributes for Fibre Channel ports, follow the procedure below. Both the primary storage

system administrator and the secondary storage system administrator must perform this operation.

1. Ensure that the Remote Web Console main window is in M o dify mode.

detailed information about how to do this, see HP StorageWorks XP24000 Remote Web

Console User’s Guide.

Conﬁguring Storage Systems and Logical Paths