Introduction to NonStop Operations Management

Change and Configuration Management
Introduction to NonStop Operations Management–125507
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Anticipating and Planning for Change
Anticipating and Planning for Change
By taking the time to anticipate and plan for change, you can avoid taking your system
down unnecessarily. Planning for change is especially important in environments that
require 24-hour-a-day, 7-day-a-week operations. You can anticipate and plan for change
by:
•
Evaluating system performance and growth. By evaluating system performance, and
tracking and anticipating growth, you can establish plans to accommodate that
growth.
•
Providing adequate computer room resources. To allow for growth and avoid
unnecessary down time, you might want to provide enough physical space for future
expansions and ensure that you have enough power and cooling capacity for
additional equipment.
•
Configuring your system with change in mind. If you plan ahead for capacity
growth, you can preconfigure additional resources into the system according to your
plans. By configuring growth into the system, you might not have to bring down the
system when you add hardware or load software upgrades. For more information on
capacity planning, refer to Section 8, “Performance Management.”
Installing and Implementing Changes
Installing and implementing changes to your system can involve the following:
•
Performing hardware changes.
•
Performing system configuration changes. This includes installing a new operating
system release; installing Tandem software products; installing an interim product
modification (IPM); and adding, removing, and reconfiguring hardware.
•
Performing subsystem changes. This includes installing and reconfiguring Tandem
application and communications subsystems.
•
Performing software changes. This includes installing vendor software and installing
software developed in-house.
Performing Hardware Changes
When hardware changes are required, be sure to contact your Tandem representative and
customer engineer (CE) well in advance of changes. Follow these guidelines when
planning the installation of hardware:
•
Provide enough space for additional hardware.
•
Determine how the equipment will be used and where it should be placed.
•
If you use a raised floor, make sure that the floor can support the additional load. If
floor cuts are required, make sure that you schedule the cuts.
•
Make sure that there are enough I/O and controller slots available. You might need
to add additional system cabinets.