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

Version 2.0.0 69
9.12 Multi-path support example
9.12.1 Multi-path support – Dual Port Drive
The following figure shows an array controller with 2 ports that are connected with 2 redundant paths to a
dual port SAS drive.
For each path between a SAS initiator port and a SAS target port (contained on a SAS drive), an instance
of HPSA_SCSIInitiatorTargetLogicalUnitPath will be created. This instance represents the path from the
controller port and the drives port. The association is a 3-way and associates the initiator port, target
port, and the storage extent of the physical disk.
CIM_SCSIInitiatorTargetLogicalUnitPath
HPSA_SCSIInitiatorTargetLogicalUnitPath
HPSA_ArraySystem
HPSA_DiskDrive
HPSA_StorageExtent
MediaPresent
HPSA_DiskDriveStorageExtent
DiskDrive Lite
HPSA_ISASSCSIProtocolEndpoint
HPSA_ISASPort
CIM_SystemDevice
HPSA_ArraySystemISASPort
Initiator Port /
SAS Initiator
CIM_HostedAccessPoint
HPSA_ArraySystemISASSCSIPE
HPSA_TSASSCSIProtocolEndpoint
HPSA_TSASPort
CIM_SystemDevice
HPSA_ArraySystemTSASPort
CIM_HostedAccessPoint
HPSA_ArraySystemTSASSCSIPE
Target Port /
SAS Target Port
CIM_SAPAvailableForElement
HPSA_DiskDriveTSASSCSIPE
HPSA_ISASPort
HPSA_TSASSCSIProtocolEndpoint
HPSA_ISASSCSIProtocolEndpoint
HPSA_TSASPort
HPSA_SCSIInitiatorTargetLogicalUnitPath
Figure 35 - HP Smart Array profile: Multi-path Instance Dual Port Drive
9.12.2 Multi-path support – Single Port Drive
The following figure shows a similar configuration as above. In this instance, a Smart Array controller with
2 ports is configured with dual paths to a single port SAS drive. Note that only one instance of
HPSA_TSASSCSIProtocolEndpoint and HPSA_TSASPort is created to represent the single port on the
SAS drive. Also, note that the Target property in each instance of
HPSA_SCSIInitiatorTargetLogicalUnitPath points to the instance of HPSA_TSASSCSIProtocolEndpoint
representing the single SCSI protocol endpoint of the single ported SAS disk