When implementations target large numbers of users and heavy web traffic, such service requires high availability and redundancy, which requires increasing the number and balance of servers.
Given the significant cost for additional servers and their maintenance, n-server configurations best suit only the very largest implementations, which have strategic need for extreme redundancy and up time.
Benefits
■ High security
■ High redundancy
Considerations
■ Costs the most, in hardware and personnel
Many iMIS appservers for manually distributing client-server load in a large organization
|
Example |
Appserver |
Database server |
|
Large |
□ 4 GB of RAM □ 2.8 GHz Dual Core Pentium or Celeron CPU □ 250 GB hard drive w/ 200 GB free |
□ 12-16 GB of RAM □ Dual 2.33 GHz Quad Core Xeon CPU, 1333MHz FSB □ 2 - 500 GB hard drive w/ 450 GB free |