HP XP Racks - Manual (Page 113)

The available path type differs for each copy type as shown in the following table.
Path Type
Copy type
Inter-disk controller logical
path
Inter-control unit logical
path
No Yes Cnt Ac-S Z or TCA
Yes No Cnt Ac-J Z
Legend:
Yes: Can be used.
No: Cannot be used.
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 65 (page 114) shows the overview of the inter-control unit logical path from the primary site
to the secondary site (forward direction).
The Logical Path Control function 113