HP Matrix Operating Environment Software - Manual (Page 53)

Requirements for High Availability Hyper-V virtual machines with
RDM/pass-through disks
Matrix supports High Availability (HA) Hyper-V VMs with RDM/pass-through disks, with various
constraints based on Hyper-V requirements:
•
Only HA VMs can have pass-through cluster disks attached, and HA VMs can only have
pass-through cluster disks attached (can attach standard pass-through disks to non-HA VMs)
•
Before provisioning an HA VM using a pass-through cluster disk, it is necessary to turn on
maintenance mode (else the VM provisioning will fail). This is done via the Microsoft Failover
Cluster Manager using Turn On Maintenance Mode in the More Actions menu for the selected
cluster disk(s). After the service containing the VM (or logical server) has been provisioned
and the OS installed, use Microsoft Failover Cluster Manager to Turn Off Maintenance Mode.
•
Before performing any Deactivate Server or deactivate logical server operation, it is required
to turn on maintenance mode for the cluster disk(s), else the reactivate logical server operation
will fail (because the start VM operation will fail).
These tasks are accomplished through the Microsoft Failover Cluster Manager using Turn On
Maintenance Mode in the More Actions menu for the selected cluster disk(s). If there is a long
period of time between deactivate and reactivate, the maintenance mode can be turned on prior
to reactivate (to minimize the time spent in maintenance mode). Maintenance mode should be
turned off once the VM is powered on again (using Microsoft Failover Cluster Manager to Turn
Off Maintenance Mode).
In order to enable HA requests for RDM, the user must enable the following properties on Matrix
infrastructure orchestration and Matrix OE logical server management files:
•
For Matrix OE logical server management:
Edit the lsa.properties file by setting the HA_VM_RDM_ENABLED property to true.
•
For Matrix infrastructure orchestration:
Edit the hpio.properties file by setting the hyperv.ha.vm.rdm.enabled property
to true.
If these properties are not set, the create service request using RDM disks with high availability will
fail. For more information, see
“Service creation fails using RDM disk with high availability Hyper-V
template” (page 211) .
Configuring a disaster recovery (DR) service
Matrix recovery management is a component of the HP Matrix Operating Environment that provides
disaster recovery protection (DR protection) for logical servers.
When Matrix recovery management and IO are installed on a CMS and recoverable services
have been configured, you can create DR protected IO services Recovery Groups using the Matrix
recovery management UI. For more information about using Matrix recovery management to
provide disaster protection for recoverable services, see the HP Matrix Operating Environment
Recovery Management User Guide available at http://www.hp.com/go/matrixoe/docs.
The file dr.properties (installed in the default location at ..\Program Files\HP\Matrix
infrastructure orchestration\conf
) is used for mapping resources between the Primary
and Replica sites. The Matrix recovery management administrator sets the properties in this file.
To configure a recoverable IO service, click to select the Recoverable check box in the IO service
template in infrastructure orchestration designer.
Requirements for High Availability Hyper-V virtual machines with RDM/pass-through disks 53