Network server host adapters

The network server host adapter (NWSH) device description object shown in Figure 15 represents the iSCSI host bus adapter (HBA) that is used by the iSeries™ side of the iSCSI connection:

• It identifies the iSeries hardware resource name (for example, LIN33) for the iSCSI HBA.
• It defines how communications errors are logged and communications recovery information.
• It defines the internet addresses, ports, and so on. for the SCSI and LAN interfaces on the iSCSI HBA.

The iSeries can have multiple iSCSI HBAs, each with an associated NWSH object.

• Each NWSH can be shared by multiple integrated servers. In configurations where bandwidth is not a concern, this results in a lower cost solution.
• Each integrated server can use multiple NWSHs. This allows multiple SCSI and virtual Ethernet data paths between the iSeries and the xSeries® or IBM® BladeCenter™ systems, which can provide greater bandwidth and connection redundancy.