HP Matrix Operating Environment Software - Manual (Page 58)

— Makes the new disk visible to the servers
— Powers up the servers
— Executes custom actions
— Sends notifications
• Data disk scrubbing If a Create Service operation uses manual operating system
deployment, the corresponding Delete service operation requires disks to be scrubbed
manually. The Insight Orchestration administrator is notified and the operation pauses until
the Insight Orchestration administrator scrubs the disks attached to the servers being
deprovisioned and continues the operation.
• Data disk deletion When configuring Insight Orchestration to perform manual storage
provisioning, the Insight Orchestration administrator is notified at the end of a Delete service
operation. The Insight Orchestration administrator must:
— Edit HP Insight Dynamics Logical Server Management storage pool entries
— Remove all LUNs added during the manual data disk allocation from the applicable
storage pool entries to make them available for provisioning
Automated allocation
Allocation is the process of finding the resources to match to the logical objects described in a
template. An Insight Orchestration template is the logical specification of an infrastructure service
using template components known as logical objects, enabling the user to provision an
infrastructure service from resources.
In Insight Orchestration templates, logical objects are specified either by attribute value or by
name. Logical server groups and storage are specified by attribute value, and networks are
specified by name or attribute. The process of matching logical objects to resources is a key
capability of Insight Orchestration and is part of several request types, including Create Service
request.
After validating the arguments of a Create Service request, the Insight Orchestration controller
performs an allocation. If Insight Orchestration can locate the resources that match the template,
then the allocation is successful. After a successful match, Insight Orchestration reserves the
selected resources and provisions to instantiate the infrastructure service specified by the template.
If Insight Orchestration does not locate the necessary resources, the request fails, the resources
are not reserved, and the infrastructure service is not created.
Insight Orchestration can also utilize the allocation process during the provisioning process. This
internal allocation process can begin when Insight Orchestration cannot successfully provision
a logical sever. Insight Orchestration releases the allocated server and attempts another allocation
to find a replacement server and continue the provisioning. If the reallocation fails, the Create
request fails.
If you view logical resources in isolation, Insight Orchestration might not be able to successfully
allocate the template. Insight Orchestration cannot allocate a network without successfully
allocating the logical server groups connected to that network. Similarly, Insight Orchestration
cannot allocate logical server groups without successfully allocating the storage for all the servers
within the group.
When Insight Orchestration executes the allocation algorithm to search for resources, it attempts
to allocate networks, then logical server groups, and finally storage. To maximize the chances
of success, within each category, the allocation algorithm always attempts to allocate the most
constrained logical object first. For example, all the networks in a template are evaluated, and
the network with the smallest number of candidate subnets is chosen to allocate first.
A Virtual Connect Domain Group defines the boundaries for a set of resources, specifically
servers, networks, and SAN volumes. Any resource within a VCDomain Group is visible to or
connected to any other resource within the same VCDomain Group. However, connectivity
58 Insight Orchestration provisioning and allocation