IBM Systems Workload Estimator for HATS
The purpose of the
IBM Systems Workload Estimator (WLE)
is to provide a comprehensive System i
sizing tool for new and existing customers interested in deploying new emerging workloads standalone or
in combination with their current workloads. The Estimator recommends the model, processor, interactive
feature, memory, and disk resources necessary for a mixed set of workloads. WLE was enhanced to
support sizing a System i server to meet your HATS workload requirements.
This tool allows you to input an interactive transaction rate and to further characterize your workload.
Refer to the following website to access WLE,
http://www.ibm.com/estimator/index.html
. Work with
your marketing representative to utilize this tool, and also refer to chapter 22 for more information.
6.6 System Application Server Instance
WebSphere Application Server - Express for iSeries V5 (5722-IWE) is delivered with i5/OS V5R3
providing an out-of-the-box solution for building static and dynamic websites. In addition, V5R3 is
shipped with a pre-configured Express V5 application server instance referred to as the System
Application Server Instance (SYSINST). The SYSINST has the following IBM supplied system
administrative web applications pre-installed
1
, providing an easy-to-use web GUI interface to
administration tasks:
y
iSeries Navigator Tasks for the Web
Access core systems management tasks and access multiple systems through one System i server
from a web browser
. Please see the following for more information:
http://publib.boulder.ibm.com/iseries/v5r3/ic2924/info/rzatg/rzatgoverview.htm
y
Tivoli Directory Server Web Administration Tool
Setup new or manage existing (LDAP) directories for business application data. Please see the
following for more information:
http://publib.boulder.ibm.com/iseries/v5r3/ic2924/info/rzahy/rzahywebadmin.htm
The SYSINST is not started by default when V5R3 is installed. Before you begin working with the above
functions, the Administration instance of the HTTP Server (port 2001) must be running on your system.
The HTTP Admin instance provides an easy-to-use interface to manage web server and application server
instances, and allows you to configure the SYSINST to start whenever the HTTP Admin instance is
started. The above administrative web applications will then be accessible once the SYSINST is started.
Please refer to the following website for more information on how to work with the HTTP Admin
instance in configuring the SYSINST:
http://publib.boulder.ibm.com/iseries/v5r3/ic2924/info/rzatg/rzatgprereq.htm
The minimum recommended requirements to support a limited number of users accessing a set of
administration functions provided by the SYSINST is 1.25 GB of memory and a system with at least 450
CPW. If you are utilizing only one of the administration functions, such as iSeries Navigator Tasks for
the Web or Tivoli Directory Server Web Administration Tool, then the recommended minimum memory
is 1 GB. Since the administration functions are integrated with the HTTP Administration Server, the
resources for this are included in the minimum recommended requirements. The recommended minimum
IBM i 6.1 Performance Capabilities Reference - January/April/October 2008
©
Copyright IBM Corp. 2008
Chapter 6 - Web Server and WebSphere
119
1
Only IBM supplied administrative web applications can be installed in the SYSINST. Customer web
applications will need to be deployed to a customer-created application server instance
