About the target mode driver
On NetBackup FT media servers, QLogic or Emulex Fibre Channel host bus adapter (HBA) ports connect to the NetBackup SAN clients. Veritas provides a special target mode driver for the ports on those HBAs. Those ports must operate in target mode; the target mode driver replaces the default, initiator mode driver. Target mode applies only to QLogic or Emulex HBAs; the target mode configuration process affects only QLogic or Emulex HBA ports.
After the target mode driver binds to the HBA ports, those ports appear as two ARCHIVE Python tape devices during SCSI inquiry. However, they are not tape devices and do not appear as tape devices in NetBackup device discovery. Each port appears as two tape devices because operating systems allow only one data stream per port. Two pseudo tape devices for each port increases throughput.
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