Chapter 4. Using Tivoli Storage Productivity Center for Replication with DS8000 201
4.2.6 Managing z/OS HyperSwap from Tivoli Storage Productivity Center for
Replication for Open Systems
Tivoli Storage Productivity Center for Replication for Open Systems version 5.2 can manage
z/OS HyperSwap enabled sessions through an IP connection to a z/OS server. For more
information, see Chapter 7, “Managing z/OS HyperSwap from Tivoli Storage Productivity
Center for Replication for Open Systems” on page 355.
4.3 Managing DS8000 sessions
As described in 4.1, “Capabilities overview” on page 160, Tivoli Storage Productivity Center
for Replication support many types of DS8000 replication topologies that combine various
copy services features. In the following sections, we describe how to set up and manage
replication sessions. We summarize the tunable parameters for every session that is
supported and describe some scenarios that require a full copy of data.
4.3.1 DS8000 Path management
Before we start to operate with a DS8000 session, we must properly define the replication
connectivity schema to implement. This involves managing the logical paths.
The logical paths define the relationship between a source LSS and a target LSS that is
created over a physical path (IO port).
Tivoli Storage Productivity Center for Replication includes the Path Manager feature to
provide control of logical paths when relationships between source and target storage
systems are established.
Path Manager helps you control the port pairing that Tivoli Storage Productivity Center for
Replication uses when the logical paths are established and ensure redundant port
combinations. It also keeps that information persistent for use when the path is terminated
because of a suspended operation.
Tivoli Storage Productivity Center for Replication provides you the following options to create
the logical paths and specify port pairing:
򐂰 Adding logical paths automatically, Tivoli Storage Productivity Center for Replication
automatically picks the paths or uses paths that were established.
򐂰 Adding logical paths and creating port pairing by using a CSV file.
򐂰 Adding logical paths by using Tivoli Storage Productivity Center for Replication GUI.
Adding logical paths automatically
If you do not specify the port pairing, Tivoli Storage Productivity Center for Replication queries
the storage systems to check whether there are established paths. By using the CSV file, you
can ensure redundant port combinations and use only the specified ports. If at least one path
is established, Tivoli Storage Productivity Center for Replication uses that path and it does not
create more paths. Otherwise, if no path is established, Tivoli Storage Productivity Center for
Replication queries the storage systems to pick the available ports (if any) to create a path. In
this case, Tivoli Storage Productivity Center for Replication creates only one path per LSSs
pair.
Note: This option does not ensure that you have redundant logical paths.

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