HP StorageWorks P9000 Cluster Extension Software Administrator Guide (TB534-96009, February 2011)

Configuring P9000 Cluster Extension resources
IMPORTANT: In Cluster Administrator (Windows Server 2003), resources are added to resource
groups. In Failover Cluster Management (Windows Server 2008/2008 R2), the term resource
groups changed to services and applications. In this guide, the term services and applications
refers to resource groups for Windows Server 2003 and services and applications for Windows
Server 2008/2008 R2.
P9000 Cluster Extension resource properties are configured using Cluster Administrator (Windows
Server 2003), Failover Cluster Management (Windows Server 2008/2008 R2), or cluster commands
in the CLI.
• For information about MSCS and Microsoft Failover Cluster Service properties that affect
P9000 Cluster Extension, see “Setting Microsoft cluster-specific resource and service or
application properties” (page 28).
• For information about P9000 Cluster Extension-specific properties, see “Setting P9000 Cluster
Extension-specific resource properties” (page 30).
Before configuring P9000 Cluster Extension resources, review the objects described in “User
configuration file and P9000 Cluster Extension objects” (page 79).
When configuring P9000 Cluster Extension resources, note the following:
• If the Cluster Administrator or Failover Cluster Management GUI is used to configure a P9000
Cluster Extension resource, configuring the resource using a user configuration file (UCF) is
not required.
• If the resource is not configured to use the pair/resync monitor, P9000 Cluster Extension
creates a file called resource_name.online in the directory specified by the ApplicationDir
resource property.
If the resource is taken offline, this file will be removed, or the device/copy group associated
with the service or application will be removed from the pair/resync monitor list, if the
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 a P9000 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 P9000 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 P9000 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 P9000 Cluster Extension resources since a P9000
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 P9000 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
Configuring P9000 Cluster Extension resources 27