I-D ACTION:draft-chadalapaka-iwarp-da-01.txt,.pdf

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	Title		: Datamover Architecture for iSCSI (DA)
	Author(s)	: M. Chadalapaka
	Filename	: draft-chadalapaka-iwarp-da-01.txt,.pdf
	Pages		: 60
	Date		: 2004-1-21
	
iSCSI is a SCSI transport protocol that maps the SCSI family of 
application protocols onto TCP/IP.  The Datamover Architecture for 
iSCSI (DA) defines an abstract model in which the movement of data 
between iSCSI end nodes is logically separated from the rest of the 
iSCSI protocol in order to allow iSCSI to adapt to innovations 
available in new IP transports.  The new Datamover protocol provides 
a reliable transport for all iSCSI PDUs, but actually moves 
the data required for certain iSCSI PDUs without involving the 
remote iSCSI layer itself.  This document begins with an 
introduction of a few new abstractions, defines a layered 
architecture for iSCSI and Datamover protocols, and then models the 
interactions within an iSCSI end node between the iSCSI layer and 
the Datamover layer that happen in order to transparently perform 
remote data movement within an IP fabric.  It is intended that this 
definition would help map iSCSI to generic RDMA-capable IP fabrics 
in the future comprising TCP, SCTP, and possibly other underlying 
network transport layers.

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