Thecus Technology i Series User Manual

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The iSCSI 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 
commands or bridges it to an attached storage device. iSCSI targets can be 
disks, tapes, RAID arrays, tape libraries, and etc. 
 
 
 
Host 2 
(initiator) 
 
Host 1 
(initiator) 
 
iSCSI 
HBA 
 
NIC 
 
 
 
 
IP SAN 
 
 
 
 
 
 
 
 
 
Figure 2.2.1 
 
The host side needs an iSCSI initiator. The initiator is a driver which handles the 
SCSI traffic over iSCSI. The initiator can be software or hardware (HBA). Please 
refer to the certification list of iSCSI HBA(s) in Appendix A. OS native initiators or 
other software initiators use the standard TCP/IP stack and Ethernet hardware,  
while iSCSI HBA(s) use their own iSCSI and TCP/IP stacks on board. 
 
Hardware iSCSI HBA(s) would provide its initiator tool. Please refer to the 
vendors’ HBA user manual. Microsoft,  Linux and Mac provide software iSCSI 
initiator driver. Below are the available links: 
 
1.  Link to download the Microsoft iSCSI software initiator: 
 
Please refer to Appendix C for Microsoft iSCSI initiator installation 
procedure. 
 
2.  Linux iSCSI initiator is also available. For different kernels, there are 
different iSCSI drivers. Please check Appendix A for software iSCSI 
initiator certification list. If user needs the latest Linux iSCSI initiator, 
please visit Open-iSCSI project for most update information. Linux-
iSCSI (sfnet) and Open-iSCSI projects merged in April 11, 2005. 
 
iSCSI device 1 
(target) 
iSCSI device 2 
(target) 
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