Lexmark C792 - Page 30

Configuration Description Advantages Disadvantages
X‑Y‑N Database (DB) on X computers in a Microsoft Cluster Server for
failover, load balancer (LB) on Y other computers in a Microsoft Cluster
Server for failover, server on one or more additional computers
Server(s)
LB
(cluster)
DB
(cluster)
Note: An external Oracle database may be installed in place of the
standard database, resulting in an E-Y-N configuration. The external
database (E) on X computers and the load balancer (LB) on Y other
computers in a Microsoft Cluster Server for failover. The server is on
one or more additional computers.
High
availability,
further
improved
performance
Further increased
hardware needs,
cluster licensing
Using multiple systems for high availability
When configuring multiple LDD systems, you can connect them to a hardware load balancer or Global Site Selector
(GSS) to provide high availability, without using clustering, as well as increased capacity.
Load
balancers/
databases
Hardware load balancer
Servers
A1 A2 A3
T1 T2 T3
T4 T5
T6
Configuration 1-N
LDD system
Configuration 1-N
LDD system
Configuration 1-N
LDD system
Each system group contains two identical LDD systems. Jobs are balanced between these systems in each group by the
hardware load balancer or GSS. If a failure occurs in one system in a group, then the other system in the group receives
all incoming jobs until the failed system can be restored.
Installing Lexmark Document Distributor 30