Tivoli Storage Productivity Center for Replication for Open Systems

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.