G1000 Port Attribute:Target/RCU Target/Initiator/External

G1000的四种端口属性，一个端口只有一种属性

target    正常情况下，LDEV从target mapping出去给host

External  虚拟化外部存储是，需要将端口设置为External
Initiator      复制的时候MCU
RCU Target 复制的时候RCU

Gx00支持双向属性
Ports support 4 different port attributes
Target for Host I/O
External for virtualization of external storage
Initiator for remote replication
RCU Target for remote replication

Bidirectional-feature supports different attributes through 1 port

一个端口拥有双向属性