SVS200 (T1714-96008, June 2006)

28 Overview of LUN Manager

default. If a port satisfies certain conditions, you can apply High Speed mode to improve port

performance. If a port satisfies certain conditions, you can apply Initiator/External MIX mode so that one

part can be used both as an initiator port for Continuous Access XP or Continuous Access XP Journal and

as an external port applied to a remote command device. For instructions on defining a remote command

device, see the HP StorageWorks External Storage XP user guide.

You must apply High Speed or Initiator/External MIX mode to groups of four ports, not to individual ports.

In LUN Manager terminology, each group of four ports is referred to as a port block. You can apply High

Speed or Initiator/External MIX mode to each port block.

When you apply High Speed or Initiator/External MIX mode, two of the four ports in a port block must

satisfy the following conditions. Also, the other two ports must satisfy the following conditions:

• The two ports have the same Fabric option (Enable or Disable).

• The two ports have FC-AL as the Connection option.

• The two ports use different port addresses and no matching addresses.

• When you apply High Speed mode, the two ports have the same port attribute (Initiator, RCU target,

or Target).

• When you apply Initiator/External MIX mode, one of the two ports takes the initiator attribute and the

other port takes the external attribute.

• Only one of the ports is used for connecting the host.

Figure 8 shows an example of High Speed or Initiator/External MIX mode applied to one or two port

blocks when the channel adapter board has eight ports. If the channel adapter board has 16 ports, you