Compaq ProLiant Cluster HA/F500 Administrator Guide

Managing the ProLiant Cluster HA/F500
5-2 ProLiant Cluster HA/F500 for MA8000 Administrator Guide
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2. Determine whether the condition will continue to worsen.
3. Determine how critical it is to repair the problem.
a. If the problem is considered noncritical, wait until a nonpeak time to service
the problem.
b. If the problem is considered critical, fail over all clustered applications and
resources to the other server before servicing the problem.
Managing Network Clients Connected to a Cluster
An important aspect of managing network clients is to inform end users that their
applications are now running on a cluster. Since end users will experience some
disruption of service and possibly a performance degradation during failover, they
might become concerned about the availability and stability of their applications.
When the cluster is initially brought into a production environment, it might be
beneficial to describe in a memorandum the effects a cluster will have on the end
users’ information systems needs.
When a failover or failback event occurs, end users will not be able to access their
application and/or data. When users have been properly forewarned of the effects of
operating in a clustered environment, they will more readily recognize when a
failover or failback event is occurring or has occurred. Most will wait a few seconds
to several minutes before trying to reconnect to their application and/or data.
Remotely Managing a Cluster
Both Compaq Insight Manager 7 and Microsoft Cluster Administrator can be run
from network client machines. Each program allows you to monitor multiple clusters
from a single remote client. Refer to the corresponding documentation for these
products to determine how to set up and configure each of these programs to run
remotely.
Cluster Events
Cluster events are logged in the Microsoft operating system Event Log. Use the
Microsoft operating system Event Viewer to view the data in the Event Log.