HP XP P9500 Storage - Manual (Page 110)

The following table lists commands related to logical paths.
Command Name Function
YKLOAD PATH Loading a path set definition file
YKSTORE PATH Storing a path set definition file
YKBLDPTH Establishing a logical path
YKDELPTH Removing a logical path
YKQRYPTH , YKQRYDEV PATH Obtaining the status of a logical path
Inter-control unit logical paths
An inter-control unit logical path is a virtual conduit for communication on a physical path between
a FC interface port (initiator port) on the MCU of a storage system connected to a FC cable to
transmit data, and a FC interface port (RCU target port) (target port) on the RCU of a receiving
storage system.
When an inter-control unit logical path is established, communication (remote copy) is enabled
between the P-VOL of Continuous Access Synchronous Z or TrueCopy Asynchronous for Mainframe,
which belongs to the Main Control Unit, and the S-VOL of Continuous Access Synchronous Z or
TrueCopy Asynchronous for Mainframe, which belongs to the Remote Control Unit.
Figure 63 (page 110) shows the overview of the inter-control unit logical path from the primary site
to the secondary site (forward direction).
Figure 63 Overview of the inter-control unit logical path (forward direction)
When the Reverse Resync function is used, an inter-control unit logical path from the secondary
site to the primary site (reverse direction) is also necessary. To establish a reverse direction
inter-control unit logical path, the route list needs to be set and the command device needs to be
registered.
110 Understanding Business Continuity Manager functions