Compaq ProLiant Clusters HA/F100, Administrator'S Manual

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2-44 Compaq ProLiant Clusters HA/F100 and HA/F200 Administrator Guide
Compaq Confidential – Need to Know Required
Writer: Bryan Hicks Project: Compaq ProLiant Clusters HA/F100 and HA/F200 Administrator Guide Comments:
Part Number: 380362-003 File Name: c-ch2 Designing the Compaq ProLiant Clusters HAF100 and HAF200.doc Last Saved On: 8/24/00 12:00 PM
Failover and Failback Policies
In the “Cluster Groups” section of this chapter, you created one or more
cluster group definition worksheets (Figure 2-8). For each cluster group
defined in the worksheets, you will now determine its failover and failback
policies by filling in the Group Failover/Failback Policy worksheet.
Terms and Definitions
The following terms and definitions are used in defining failover/failback
policies for cluster groups.
Table 2-4
Group Failover/Failback Policy Terms and Definitions
Term Definition
Failover policy The circumstances the Microsoft clustering software uses to take
a group offline on the primary (preferred) node and online on the
secondary node.
Failback policy The circumstances the Microsoft clustering software uses to
bring a group offline on the secondary node and online on the
primary (preferred) node.
Preferred owner The cluster node you want the cluster group to run on when the
cluster is in a normal state.
Failover threshold The number of times the Microsoft clustering software will
attempt to fail over a group within a specified failover period.
continued