Software Manual

NOTE:

HP strongly recommends establishing at least two independent remote copy connections from the

primary array to the secondary array and vice versa to provide hardware redundancy for this critical

communications path.

Initiator and RCU target ports

Initiator and RCU target ports are required at the primary and secondary arrays. The initiator port at

the primary array is connected to the RCU target port at the secondary array through a Fibre Channel

interface. The initiator port at the secondary array is connected to the RCU target port at the primary

array. The initiator port at the secondary array issues a read journal command to the primary array. In

response to the read journal command, the RCU target port at the primary array sends journal data to

the secondary array.

You can conﬁgure any Fibre Channel interface port on the local array as an initiator port. Initiator ports

cannot communicate with host processor channels. Host channel paths must be connected to a Fibre

Channel interface port other than the initiator port.

NOTE:

Two or more initiator ports must be conﬁgured before you can add secondary arrays and create

Continuous Access XP Journal volume pairs.

You can connect Fibre Channel interface ports assigned as RCU target ports to host channel paths

through a Fibre Channel switch.

See Conﬁguring port attributes for more information about conﬁguring host interface ports.

Continuous Access XP Journal and the XP Remote Web Console Software

The XP Remo

te Web Console software includes Continuous Access XP Journal software for the local array.

The XP Remote Web Console software communicates with each local array's SVP through deﬁned TCP/IP

connections. For more information about XP Remote Web Console operations, see the HP StorageWorks

XP Remote Web Console user guide for XP12000/XP10000/SVS200 or contact your HP account

support representative.

For remot

e operations using the XP Remote Web Console software, the management station at the primary

site must be attached to the primary array. You should also attach a XP Remote Web Console web client

at the secondary site to all secondary arrays. You can then use the web client to change the secondary

array's

Continuous Access XP Journal parameters and access the Continuous Access XP Journal secondary

data volume (for example, for media maintenance). To to simplify and expedite Continuous Access XP

Journal operations in the reverse direction — from the remote site to the primary site (for example, disaster

recover

y),youcanusetheXPRemoteWebConsolewebclientinstalledatthesecondarysite.

NOTE:

If the XP Remote Web Console web client is not installed, contact your HP account support representative

for information about Continuous Access XP Journal conﬁguration services.

Host failover software

Host failover software, which transfers information between host servers at the primary and remote sites,

is a critical component of any disaster recovery effort. Host failover is conﬁgured using the desired host

failover software product for the platform (for example, Microsoft Cluster Server or HP Serviceguard),

depending on your installation requirements and standards. The Command View XP or XP Remote Web

Consolesoftwareproductsdonotprovidehostfailoverfunctions.

Overview of Continuous Access XP Journal