Name: draft-ietf-ips-iwarp-da-00
Title: Datamover Architecture for iSCSI (DA)
State: Active
Authors: Mallikarjun Chadalapaka
Group: IP Storage (ips)
Date: 2004-09-10
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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