Filter
Top Products
Chapter 31. IBM TotalStorage Productivity Center for Replication 479
31.9 TPC for Replication and scalability
From an architecture point of view there is no limit to the number of Copy Sets that may
belong to a single session. The implementation approach of managing Copy Sets and
sessions provides the scalability that very large installations require.
Figure 31-7 TPC for Replication - four sessions
There is also no limit to the number of sessions that TPC for Replication can manage.
Figure 31-7 shows four sessions managing different Copy Sets. The first session, Session 1,
implies a Metro/Global Mirror configuration that is
not supported (at the time of writing this
redbook) by TPC for Replication.
The second session, Session 2, is a Global Mirror session between an intermediate site and
a remote site with two Copy Sets.
The third session, Session 3, is a Metro Mirror configuration between the local and
intermediate site.
The session at the bottom in Figure 31-7, Session 4, is a Global Mirror session between the
local and remote sites.
31.10 TPC for Replication system and connectivity overview
TPC for Replication is an outboard approach. Its software runs on a dedicated server or,
better, on two servers, for a high availability configuration.
Intermediate DS6000 / DS8000
Primary
Primary
A
Copy Set
Remote DS6000 / DS8000
Local DS6000 / DS8000
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primar y
Primar y
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primar y
Primar y
A
Primar y
Primar y
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primary
Primary
A
Primar y
Primar y
A
Primary
Primary
A
Primary
Primary
A
Session 2
Session 4
Session 3
Session 1