Power Systems Enterprise Servers with PowerVM Virtualization and RAS

Chapter 2. Exploring RAS and virtualization features in more detail 43

As shown in Figure 2-20, the SCSI request and responses are sent over the vSCSI adapters

using the Power hypervisor, but the actual data transfer is done directly between the LPAR

and the physical adapter using the RDMA protocol.

Figure 2-20 Logical Remote Direct Memory Access (RDMA)

2.7.2 N_Port ID Virtualization (NPIV)

In a typical SAN environment, when using FC, the logical unit numbers (LUNs) are created

using the physical storage and then mapped to physical host bus adapters (HBAs). Each

physical port on each physical FC adapter is identified by its own unique worldwide ...