HP StorageWorks XP Remote Web Console Software - Manual (Page 147)

Using XP Continuous Access or XP Continuous Access Journal
with remote command devices
To use XP Continuous Access or XP Continuous Access Journal with a remote command device, you
would traditionally need two different kinds of ports: an initiator port for XP Continuous Access or XP
Continuous Access Journal, and an external port for the remote command device. However, if you
set the Initiator/External MIX mode, you can use a port as both the initiator port for XP Continuous
Access or XP Continuous Access Journal and as the external port only for remote command device
use.
Before setting the Initiator/External MIX mode, you must prepare initiator and external ports in one
port block of Standard mode. You can set the Initiator/External MIX mode on the port block consisting
of the initiator and external ports.
Figure 67 shows the difference between Standard and Initiator/External MIX modes. When ports are
set to Standard modes, you must connect the cables for the initiator and external ports. However, if
you set the Initiator/External MIX mode, you must connect only one cable, and you can use that path
to operate XP Continuous Access or XP Continuous Access Journal and the remote command device.
For more information about port blocks and setting the Initiator/External MIX mode, see the HP
StorageWorks XP LUN Configuration and Security Manager user guide: HP XP12000 Disk Array,
HP XP10000 Disk Array, HP 200 Storage Virtualization System.
Figure 67 Difference between Standard and Initiator/External MIX modes
.
Figure 68 shows an example of using XP Continuous Access or XP Continuous Access Journal with a
remote command device. In Figure 68 , local array 1 functions as the MCU of XP Continuous Access
or XP Continuous Access Journal, and at the same time it functions as the local array of the remote
command device. Local array 2 functions as the RCU of XP Continuous Access or XP Continuous
Access Journal, and at the same time it functions as the external array of the remote command device.
In this case, setting the XP Continuous Access or XP Continuous Access Journal pair and setting the
remote command device are both done using the port of the Initiator/External MIX mode. As this
XP External Storage Software User Guide 147