HP D7171A - NetServer - LPr Applications page 2

FXVWRPHUýXVDJHýJXLGH
+ 3 ý 1 H W 6 H U Y H U ý / 3 U
6CDNG"30"5GTXGT"TGUQWTEG"WVKNK\CVKQP"HQT"VJG".2T"CRRNKECVKQPU
Application Server
(any Client/Server, ERP)
Collaboration
Clustered applications
Database Medium
(ERP, OLTP, etc.)
File & Print
Infrastructure
Domain/Proxy/Firewall
ISP
Linux / NT / Novell
Messaging
E-mail Services
Small Applications
Vertical Applications
Terminal Server
Thin Client Server
Web Server Static
Web Server Dynamic
Intra/Internet
Applications, their key requirements and the HP NetServer LPr
(Server Resource Utilization is the framework)
Application server (the middle of the 3-tier architecture)
An application server comprises tier 2 of a 3-tier client/server architecture (see Figure 1). This
server acts as the interface between the clients (users) on one side and the database server on
the other side. The business logic of the application is processed on this server, that is, the
data is manipulated and the user inquiries are addressed on this server. The server can be
dedicated to one application, can be part of multiple servers dedicated to the same application
or have several applications residing on one server, depending upon the scalability
requirements of the site. The server can also be a Web server with the interface as a familiar
browser and the connection made via the Internet.
Application Type
Server Resource Utilization
CPU Memory
Power Scalability
High Medium
Medium High
Medium Low
Medium Medium
Low Low
Medium Low
Medium Medium
Medium Medium
Low Low
High High
Medium Medium
Medium Medium
Disk Network
I/O I/O
Low Medium
Medium Medium
Medium Low
Medium Low
Medium Low
Low Medium
Medium Low
High Medium
Low Low
Medium Medium
Low Medium
Medium Medium
2