Small Computer Systems Interface protocol over the Internet (iSCSI) Requirements and Design Considerations
RFC 3347
| Document | Type | RFC - Proposed Standard (July 2002; No errata) | |
|---|---|---|---|
| Authors | Marjorie Krueger , Randy Haagens | ||
| Last updated | 2015-10-14 | ||
| Stream | Internet Engineering Task Force (IETF) | ||
| Formats | plain text html pdf htmlized (tools) htmlized bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 3347 (Proposed Standard) | |
| Action Holders |
(None)
|
||
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Allison Mankin | ||
| IESG note | Responsible: Finished | ||
| Send notices to | <ElizabethRodriguez@ieee.org> | ||
Network Working Group M. Krueger
Request for Comments: 3347 R. Haagens
Category: Informational Hewlett-Packard Corporation
C. Sapuntzakis
Stanford
M. Bakke
Cisco Systems
July 2002
Small Computer Systems Interface protocol over the Internet (iSCSI)
Requirements and Design Considerations
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2002). All Rights Reserved.
Abstract
This document specifies the requirements iSCSI and its related
infrastructure should satisfy and the design considerations guiding
the iSCSI protocol development efforts. In the interest of timely
adoption of the iSCSI protocol, the IPS group has chosen to focus the
first version of the protocol to work with the existing SCSI
architecture and commands, and the existing TCP/IP transport layer.
Both these protocols are widely-deployed and well-understood. The
thought is that using these mature protocols will entail a minimum of
new invention, the most rapid possible adoption, and the greatest
compatibility with Internet architecture, protocols, and equipment.
Conventions used in this document
This document describes the requirements for a protocol design, but
does not define a protocol standard. Nevertheless, the key words
"MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD",
"SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document
are to be interpreted as described in RFC-2119 [2].
Krueger, et al. Informational [Page 1]
RFC 3347 iSCSI Requirements and Design Considerations July 2002
Table of Contents
1. Introduction.................................................2
2. Summary of Requirements......................................3
3. iSCSI Design Considerations..................................7
3.1. General Discussion...........................................7
3.2. Performance/Cost.............................................9
3.3. Framing.....................................................11
3.4. High bandwidth, bandwidth aggregation.......................13
4. Ease of implementation/complexity of protocol...............14
5. Reliability and Availability................................15
5.1. Detection of Data Corruption................................15
5.2. Recovery....................................................15
6. Interoperability............................................16
6.1. Internet infrastructure.....................................16
6.2. SCSI........................................................16
7. Security Considerations.....................................18
7.1. Extensible Security.........................................18
7.2. Authentication..............................................18
7.3. Data Integrity..............................................19
7.4. Data Confidentiality........................................19
8. Management..................................................19
8.1. Naming......................................................20
8.2. Discovery...................................................21
9. Internet Accessibility......................................21
9.1. Denial of Service...........................................21
9.2. NATs, Firewalls and Proxy servers...........................22
9.3. Congestion Control and Transport Selection..................22
10. Definitions.................................................22
11. References..................................................23
12. Acknowledgements............................................24
13. Author's Addresses..........................................25
14. Full Copyright Statement....................................26
1. Introduction
The IP Storage Working group is chartered with developing
comprehensive technology to transport block storage data over IP
protocols. This effort includes a protocol to transport the Small
Computer Systems Interface (SCSI) protocol over the Internet (iSCSI).
The initial version of the iSCSI protocol will define a mapping of
SCSI transport protocol over TCP/IP so that SCSI storage controllers
(principally disk and tape arrays and libraries) can be attached to
IP networks, notably Gigabit Ethernet (GbE) and 10 Gigabit Ethernet
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