HP Insight Management WBEM Providers for HP integrated VMware ESXi 5.0 U1 June 2012 Profiles

16 Version 2.1.0

6.5 Disk Sparing

HPSAS_StorageExtent

HPSAS_StoragePool

Concrete Pool

ConcreteComponent

HPSAS_StorageRedundancySet

MemberOfCollection

HPSAS_StorageExtent

Spare

IsSpare

StorageExtent

StorageRedundancySet

StoragePool

Figure 5 - HP SAS HBA profile: Disk Sparing Class Diagram

The Disk Sparing profile is used to model spare drives for raid sets. All the drives (HPSAS_StorageExtent

instances) in a raid shall be associated to an instance of HPSAS_StorageRedundancySet via

CIM_MemberOfCollection. Any spare drives (HPSAS_StorageExtent) shall be associated to the same

Storage Redundancy Set via the CIM_IsSpare association.

For SAS HBA, only one spare drive can be configured but this can act as a spare for any RAID sets

configured on the controller.

When a spare drive is “in use”, the HPSAS_StorageExtent will be associated to the failed drive(s) via

CIM_Spared association.

To determine if a concrete pool had spare drives configured, you would need to identify at least one

StoragExtent that was associated to the pool using CIM_ConcreteComponent association. If this instance

of a StorageExtent had a CIM_MemberOfCollection association to a CIM_StorageRedudancySet

instance, this would imply that at least one spare drive was configured for the Pool. Use CIM_IsSpare

association to find all the spare drives for the StorageRedundancySet.

See Section 9.5 for specific use cases.

6.6 Profile Registration