Chapter 3. Virtualization 111Figure 3-12 Architectural view of virtual SCSIAt the time of writing, virtual SCSI supports Fibre Channel, parallel SCSI, iSCSI, SAS, SCSIRAID devices, and optical devices (including DVD-RAM and DVD-ROM). Other protocolssuch as SSA and tape devices are not supported.For more information about the specific storage devices supported for VIOS, see thefollowing web page:http://www14.software.ibm.com/webapp/set2/sas/f/vios/documentation/datasheet.htmlVIOS functionsVIOS includes a number of features, including monitoring solutions, as follows: Support for Live Partition Mobility on POWER6 and POWER7 processor-based systemswith the PowerVM Enterprise Edition. For more information about Live Partition Mobility,see 3.4.6, “PowerVM Live Partition Mobility” on page 112. Support for virtual SCSI devices backed by a file. These are then accessed as standardSCSI-compliant LUNs. Support for virtual Fibre Channel devices used with the NPIV feature. VIOS Expansion Pack with additional security functions such as Kerberos (NetworkAuthentication Service for users and Client and Server Applications), SNMP v3 (SimpleNetwork Management Protocol), and LDAP (Lightweight Directory Access Protocol clientfunctionality). The Workload Estimator, designed to ease the deployment of a virtualized infrastructure. IBM Systems Director agent and a number of IBM Tivoli Management agents areincluded, such as Tivoli Identity Manager (TIM) and Tivoli Application DependencyDiscovery Manager (ADDM). vSCSI eRAS.POWER HypervisorClient Partition 1 Client Partition 2Virtual I/O ServerLVMPhysicalAdapterHdisk HdiskLogicalVolume 1LogicalVolume 2Physical Disk(SCSI, FC)VSCSIServerAdapterVSCSIClientAdapterVSCSIClientAdapterVSCSIServerAdapter
