HP StorageWorks External Storage XP user guide for the XP12000, XP10000, SVS200 (T1706-96009, October 2007)

Using Continuo
us Access XP or Continuous Access XP Journal
with remote com
mand devices
To use Continuous Access XP or Continuous Access XP Journal with a remote command device, you
would traditionally need two different kinds of ports: an initiator port for Continuous Access XP or
Continuous Ac
cess XP 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 Continuous Access XP or
Continuous Access XP Journal and as the external port only for remote command device use.
Before settin
g the Initiator/External MIX mode, you must prepare initiator and external ports in one port
block of Stan
dard 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 Initiato
r/External MIX mode, you must connect only one cable, and you can use that path to operate
Continuous Access XP or Continuous Access XP Journal and the remote command device.
For more information about port blocks and setting the Initiator/External MIX mode, see
the HP StorageWorks LUN Configuration and Security Manager XP user guide for the
XP12000/XP10000/SVS200.
Figure 67 Difference between Standard and Initiator/External MIX modes
Figure 68 shows an example of using Continuous Access XP or Continuous Access XP Journal with a
remote command device. In Figure 68, local array 1 functions as the MCU of Continuous Access XP or
Continuous Access XP 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 Continuous Access XP or Continuous Access XP Journal,
and at the same time it functions as the external array of the remote command device. In this case, setting
the Continuous Access XP or Continuous Access XP Journal pair and setting the remote command device
are both done using the port of the Initiator/External MIX mode. As this example shows, you only need
to connect one cable to one of the ports set to Initiator/External MIX mode, which means that you do
not need to connect cables to each port of different port attributes.
13 4
Remote command devices