HP XP Cluster Extension Software Administrator Guide

pair/resync monitor is configured for that resource. If the device/copy 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
resource 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/copy 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/copy
groups, you must configure multiple XP Cluster Extension resources since a 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 RAID Manager
instances 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 RAID Manager instances
t
WT
= wait time until remote error will be reported by local 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
.
• When a copy group is used in the RAID Manager configuration file, the copy group name is
listed in the resource configuration tool XP device/copy group menu.
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 2008/2008 R2/2012, use the Failover Cluster Management GUI or
cluster commands 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 Failover Cluster Management resource properties are described
in “Setting resource properties and values in the GUI” (page 20). 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".
Powershell cmdlets can also be used instead of cluster.exe. For more information, see Microsoft
documentation.
Configuring XP Cluster Extension resources 19