IBM BS029ML - WebSphere Portal Server, Self Help Manual

Page: 39 / 242

Chapter 2. Architecture and planning
25
community data between different Portal clusters, and the cluster members that participate in
each, ensures consistency at the user interaction level (new to Portal Server V6.0.x). That is,
any user customization made against one Portal cluster member, by a user, is now available
to the same user, as and when that user accesses any of the other cluster members
participating in the same or different Portal cluster. Each Portal cluster, in turn, maintains a
separate release repository, which provides a mechanism for maintaining all Portal resource
definitions, rules, and rights specific to that cluster.
Again, this is an acknowledged product improvement from the limitations associated with
WebSphere Portal Server V5.1.x and earlier. Failing to implement such an architecture would
otherwise necessitate deploying a single clustered instance of WebSphere Portal Server and
adopting either the IBM documented 24x7 Portal maintenance procedure or the use of a
secondary maintenance environment.
Figure 2-3 illustrates the system topology needed for a Portal Server V6.0.x dual cluster
architecture.
Figure 2-3 Dual cluster architecture illustrating two lines of production
Key features of this architecture are:
򐂰 Two independent HTTP Server clusters (HTTP Cluster A and HTTP Cluster B), consisting
of at least two physical nodes per cluster (so that each cluster is highly available in its own
right).
򐂰 Two independent WebSphere Portal Server clusters (Portal Cluster A and Portal Cluster
B), one per WebSphere Cell.
node: WSND01
Load Balancer Load Balancer
Portal Cluster A Portal Cluster B
WAS Cell A
WAS Cell B
WebSphere_Portal_3 WebSphere_Portal_7
HTTP Cluster A
node: PORTAL01 node: PORTAL02 node: PORTAL03 node: PORTAL04
HTTP Server
node: ebizWS02
node: PORTDB02
In
stance
: P
S
P
R
O
D
Firewall
Firewall
Deployment Manager
WAS Cell A
Shared DMGR
WebSphere_Portal_2
WebSphere_Portal_1
WebSphere_Portal_6
WebSphere_Portal_5
WebSphere_Portal_4 WebSphere_Portal
WebSphere_Portal_3 WebSphere_Portal_7
WebSphere_Portal_2
WebSphere_Portal_1
WebSphere_Portal_6
WebSphere_Portal_5
WebSphere_Portal_4 WebSphere_Portal
HTTP Server
node: ebizWS01
Deployment Manager
WAS Cell B
jcr
(s
ha
re
d)
fdb
ku
sr
(s
ha
re
d)
R
e
le
as
e
B
us
r
fdb
ku
sr
(s
ha
re
d)
C
o
mmu
ni
ty
(s
ha
re
d)
R
e
le
as
e
A
us
r
Cu
st
o
m
iz
at
io
n
(s
ha
re
d)
wm
m
(sh
a
red)
In
st
a
n
ce:
JC
RP
RO
D
node: PORTDB01
HTTP Cluster B
HTTP Server
node: ebizWS02
HTTP Server
node: ebizWS01
Line of Production A Line of Production B
Line of Production A Line of Production B