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Copyright@2004~2014 Qsan Technology, Inc. All Rights Reserved.
Qsan Document – User Manual
Storage protocol, such as iSCSI, has “two ends” in the connection. These ends are initiator and
target. In iSCSI, we call them iSCSI initiator and iSCSI target. The iSCSI initiator requests or initiates
any iSCSI communication. It requests all SCSI operations like read or write. An initiator is usually
located on the host side (either an iSCSI HBA or iSCSI SW initiator).
The target is the storage device itself or an appliance which controls and serves volumes or virtual
volumes. The target is the device which performs SCSI command or bridge to an attached storage
device.
SAS Concepts
Serial-attached SCSI offers advantages over older parallel technologies. The cables are thinner, and
the connectors are less bulky. Serial data transfer allows the use of longer cables than parallel data
transfer.
The target is the storage device itself or an appliance which controls and serves volumes or virtual
volumes. The target is the device which performs SCSI command or bridge to an attached storage
device.
iSCSI device 1 (target)
Host 1
(initiator)
NIC
IP SAN
Host 2
(initiator)
iSCSI
HBA
iSCSI device 2 (target)
