NonStop S-Series Planning and Configuration Guide (G06.25+)

Planning for System Availability and Support
HP NonStop S-Series Planning and Configuration Guide—523303-015
10-3
Evaluating System Performance and Growth
Evaluating System Performance and Growth
Evaluating system performance and growth involves tracking and anticipating growth
and then establishing plans to accommodate that growth.
HP provides a wide variety of tools that provide data useful for your growth forecasts.
Providing Adequate Computer-Room Resources
Some changes require more power and air conditioning. You can avoid unnecessary
downtime by ensuring that you have enough physical space, power capacity, and
cooling capacity for additional equipment. Section 12, Site Planning and Preparation,
describes environmental and other site-planning requirements.
Configuring Your System to Accommodate Future Changes
Your system is designed so that most changes can be performed while the system is
operational (online). Some changes that can require the system to be offline can be
performed online if you have configured your system to allow that. The NonStop S-
Series Hardware Installation and FastPath Guide describes how you can avoid taking
your system offline to add new hardware.
An example of configuring your system to accommodate future change is to select
limits that allow some space for growth. For example, you can avoid shutting down
your Pathway system to increase the maximum number of Pathway objects by
configuring one or two more objects than you currently need.
Common Performance-
Management Tasks Definition
How This Task Helps Plan
for Growth
Application sizing Using models to determine how
well new applications will handle
their intended workloads
Helps you plan for growth in
system workloads caused by
new applications
Capacity planning Forecasting future capacity
needs based on performance
trends and the growth in users,
applications, and your
company’s business
Helps you plan for growth in
system workloads based on
business growth
Performance analysis
and tuning
Measuring system performance
and acting on the results of the
measurements
Improves system
performance and availability
Usage accounting Tracking the use of system
resources for accounting
purposes
Helps you plan for system
growth if user activity is
known in sufficient detail.