User`s guide

B – Glossary
B-2 IS0054602-00 A
Q
Driver (continued) In Red Hat/SuSE Linux, the driver layers include:
■ SCSI Upper Layer. This is the device management
layer. It handles device-dependent tasks for devices,
such as disks and tapes.
■ SCSI Middle Layer. This is the SCSI traffic handling
layer. It directs requests between the kernel and the
SCSI.
■ SCSI Lower Layer. This is the SCSI host bus adapter
driver. It communications directly to the SCSI HBA.
The structure for Solaris SPARC drivers includes:
■ Nexus Drivers. Nexus drivers provide bus mapping
and translation services to subordinate nexus and
leaf devices. These include drivers for PCI-to-PCI
bridges, PCMCIA adapters, and SCSI HBAs.
■ Leaf Drivers. Leaf drivers provide the traditional
character and block driver interfaces for reading and
writing data to storage and communication devices.
These include drivers for peripheral devices,
including QLA4xxx HBAs, disks, tapes, network
adapters, and frame buffers.
Fast!UTIL QLogic FAST!UTIL iSCSI HBA BIOS Utility
HBA Host bus adapter. An HBA is the board that interfaces
between the host system and device. HBA is
synonymous with host adapter, adapter, and adapter
board. In SANsurfer iSCSI HBA Manager
documentation, the term QLA4xxx HBA is used.
HBA alias name HBA port iSCSI alias name. Symbolic name you assign
to the HBA port for identification purposes.
HBA iSCSI name HBA port iSCSI name. The QLogic manufacturing
default name or a name that you assign.
HBA port An HBA port is port on the HBA.
IOCB IOCB stands for I/O control block. An IOCB is a
command structure in QLogic ISP architecture.
iSCSI iSCSI stands for Internet small computer systems
interface.