Inter-control unit logical paths – HP XP Racks User Manual
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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.
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
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