Cluster Management Concepts Using Microsoft Windows Nt Server 4.0, Enterprise Edition, Or Windows 2000 Advanced Server; Managing A Cluster Without Interrupting Applications Or Services; Managing A Cluster In A Degraded Condition; Managing Hardware Components Of Individual Server Nodes - Compaq CL380 - ProLiant - 256 MB RAM Software User's Manual

6-2 Compaq ProLiant CL380 Software User Guide
Cluster Management Concepts Using
Microsoft Windows NT Server 4.0,
Enterprise Edition, or Windows 2000
Advanced Server
Managing a Cluster without Interrupting
Applications or Services

Managing a Cluster in a Degraded Condition

Managing Hardware Components of Individual
Server Nodes
At some time during the life of your system, it is likely you will need to
perform an operation on a server node that will require it to be powered down.
Always use Cluster Administrator to fail over (or at a minimum, bring offline)
clustered applications before powering down the server.
Due to the high-availability nature of clustering, applications and network
clients remain operational even while some cluster components do not. When
the cluster is in this degraded condition, it is important to follow this process:
1. Understand what caused the degradation.
2. Determine whether the condition will continually worsen.
3. Determine how critical it is to repair the problem.
a. If the problem is considered non-critical, wait until a non-peak time
to service the problem.
b. If the problem is considered critical, fail over all clustered
applications and resources to the other server node before servicing
the problem.
Compaq Insight Manager has been enhanced to operate with the
Compaq ProLiant CL380. While Compaq Insight Manager maintains its
current features of viewing and managing servers and their components, it now
allows you to view two server nodes as a single cluster entity. A
comprehensive overview of the cluster capabilities of Compaq Insight
Manager appears later in this chapter.