<Tr> <Th> OpenVMS </Th> <Td> 2002 - 08 </Td> <Td> 8.3 - 1H1 </Td> <Td> Initiator, Multipath </Td> </Tr> <Tr> <Th> macOS </Th> <Td> 2008 - 07 </Td> <Td> 10.4--</Td> <Td> N / A </Td> </Tr> <P> Most iSCSI targets involve disk, though iSCSI tape and medium - changer targets are popular as well . So far, physical devices have not featured native iSCSI interfaces on a component level . Instead, devices with Parallel SCSI or Fibre Channel interfaces are bridged by using iSCSI target software, external bridges, or controllers internal to the device enclosure . </P> <P> Alternatively, it is possible to virtualize disk and tape targets . Rather than representing an actual physical device, an emulated virtual device is presented . The underlying implementation can deviate drastically from the presented target as is done with virtual tape library (VTL) products . VTLs use disk storage for storing data written to virtual tapes . As with actual physical devices, virtual targets are presented by using iSCSI target software, external bridges, or controllers internal to the device enclosure . </P>

Technologies available for implementing iscsi for high availability