A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the IP Storage Working Group of the IETF.
Title : Datamover Architecture for iSCSI (DA)
Author(s) : M. Chadalapaka, et al.
Filename : draft-ietf-ips-iwarp-da-03.txt,.pdf
Pages : 65
Date : 2005-6-29
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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