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SCSI host bus adapter (HBA) to the operating system and application software. To the
host system, this appears to be a physical HBA, but all traffic for the iSCSI HBA is encap-
sulated for delivery via the network to the remote iSCSI target.

Host systems that will transmit commands and data via iSCSI should have iSCSI initiator
software installed and configured. iSCSI initiator drivers are available for many operating
systems. For host systems running the Windows® operating system, Microsoft® offers an
iSCSI initiator driver. See 

, for

information on downloading, installing and configuring the driver. Linux users should see
Appendix B “Linux iSCSI Initiator setup.. 

Host systems for which iSCSI initiator drivers are not available cannot access iSCSI
devices directly. For these systems, the Cybernetics iClient device is available, which
enables hosts to access remote iSCSI devices as if they were directly connected to the
host system. The iClient connects to the SCSI bus on the host system and relays SCSI
commands and responses between the host system and the iSCSI target devices via the
network.