HP StorageWorks XP Cluster Extension Software Administrator Guide (T1656-96035, April 2010)

is configured for that resource. If the device group is the last monitored disk pair, and you take
the resource offline, the pair/resync monitor will be stopped.
• Windows Server 2008 only: If an XP Cluster Extension resource is not configured, the resource
icon in the Failover Cluster Management GUI shows the message “not configured” next to the re-
source status.
• The XP Cluster Extension resource must be the first resource for all disk resources in the dependency
list of a resource cluster group.
• If you have an application in a cluster that uses more than one physical disk from the same device
group, configure a single XP Cluster Extension resource, and ensure that all of the application
disks depend on that resource. If the disks are split into different device groups, you must configure
multiple XP Cluster Extension resources since an XP Cluster Extension resource operates at the
device-group level.
• The PendingTimeout value must be greater than the ResyncWaitTimeout value.
• The PendingTimeout must be greater than twice the wait time of all remote XP RAID Manager in-
stances multiplied by the number of remote systems. Otherwise, the XP Cluster Extension resource
will fail to go online if there is a complete remote data center failure.
t
online
> n
remote systems
x 2 x t
WT
where:
t
online
= resource online timeout
n
remote systems
= number of remote systems configured to run XP RAID Manager instances
t
WT
= wait time until remote error will be reported by local XP RAID Manager instance
If a post-executable is specified, the PendingTimeout must be greater than the number of remote
systems multiplied by three times t
WT
.
Setting Microsoft cluster-specific resource and service or application properties
Microsoft allows you to set specific failover parameter and threshold values for a service or application,
as well as for a resource. Some of these values must be changed for XP Cluster Extension to enable
manual recovery actions in case of a disaster.
To set Microsoft cluster-specific resource properties:
• For Windows Server 2003, use the Cluster Administrator GUI or cluster commands in the CLI.
• For Windows Server 2008/2008 R2, use the Failover Cluster Management GUI or cluster com-
mands in the CLI.
• For Server Core or Hyper-V Server, use cluster commands in the CLI.
TIP:
You can use the GUI option for Server Core or Hyper-V Server by using the MMC to manage a
cluster remotely. For more information about using the MMC, see your Microsoft documentation.
XP Cluster Extension requirements for Cluster Administrator and Failover Cluster Management resource
properties are described in Table 1 on page 47. If there is no required value for a property, the valid
and/or default values are specified. Set these properties in the resource properties window or the
CLI. If you use the CLI, use the following command:
cluster.exe resource ResourceName /prop PropertyName="PropertyValue".
Configuring XP Cluster Extension for Windows46