text: In the simplest terms, iSCSI enables the transport of SCSI commands and data over an 
  Internet Protocol network, based on IP routers and Ethernet switches. iSCSI is a block-level 
  protocol that encapsulates SCSI commands into Transmission Control Protocol/Internet 
  Protocol (TCP/IP) packets and uses an IP network, rather than requiring expensive FC host 
  bus adapters (HBAs) and a SAN fabric infrastructure. 
  
  The major functions of iSCSI include encapsulation and the reliable delivery of CDB 
  transactions between initiators and targets through the Internet Protocol network, especially 
  over a potentially unreliable IP network. 
  
  Every iSCSI node in the network must have an iSCSI name and address. Consider the 
  following points: 
  
  (cid:2) An*iSCSI name*is a location-independent, permanent identifier for an iSCSI node. An 
  
  iSCSI node has one iSCSI name that stays constant for the life of the node. The terms 
  *initiator name*and*target name*also refer to an iSCSI name. 
  
  (cid:2) An*iSCSI address*specifies not only the iSCSI name of an iSCSI node, but a location of 
  
  that node. The address consists of a host name or IP address, a TCP port number (for the 
  target), and the iSCSI name of the node. An iSCSI node can have any number of 
  addresses, which can change at any time, particularly if they are assigned by way of 
  Dynamic Host Configuration Protocol (DHCP). An IBM SAN Volume Controller node 
  represents an iSCSI node and provides statically allocated IP addresses. 