DECADE Group A. Rahman
Internet Draft JC. Zuniga
Intended status: Informational InterDigital Communications, LLC
Expires: December 29, 2010 June 29, 2010
An Additional Survey of In-Network Storage Systems
draft-rahman-decade-survey-00
Abstract
This document describes some additional network based storage
systems to complement the surveys already performed in the DECADE
working group.
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Table of Contents
1. Introduction...................................................2
2. Conventions and Terminology....................................3
3. Photo Sharing..................................................3
3.1. Data Access Interface.....................................3
3.2. Data Management Operations................................4
3.3. Data Search Capability....................................4
3.4. Access Control Authorization..............................4
3.5. Resource Control Interface................................4
3.6. Discovery Mechanism.......................................4
3.7. Storage Mode..............................................5
4. Web Mail.......................................................5
4.1. Data Access Interface.....................................5
4.2. Data Management Operations................................5
4.3. Data Search Capability....................................5
4.4. Access Control Authorization..............................5
4.5. Resource Control Interface................................6
4.6. Discovery Mechanism.......................................6
4.7. Storage Mode..............................................6
5. Conclusions....................................................6
6. Security Considerations........................................6
7. IANA Considerations............................................6
8. References.....................................................7
8.1. Normative References......................................7
8.2. Informative References....................................7
9. Acknowledgments................................................7
1. Introduction
The DECADE (DECoupled Application Data Enroute) working group is
chartered to design and standardize an architecture and protocol
that will enable Peer-to-Peer (P2P) applications to utilize network
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based storage systems as described in [I-D.draft-song-decade-
problem-statement].
In this draft, we propose considering two key systems in addition to
the DECADE survey of existing in-network storage [I-D.draft-song-
decade-survey]. These systems include both P2P and other modes and
help provide further useful insights for DECADE. This document
responds to the call made at the IETF #77 meeting by the WG chair,
requesting the group to contribute to enhancing the existing survey.
2. Conventions and Terminology
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 [RFC2119].
3. Photo Sharing
There are a growing number of popular on line Photo Sharing
(storing) systems. For example, the Kodak Gallery system
[KodakGallery01] serves over 60 million users and stores billions of
images [KodakGallery02]. Other well known examples of Photo Sharing
systems include Flickr [Flickr] and ImageShack [ImageShack]. Also
there a number of popular blogging services, such as Tumblr
[Tumblr], which specialize in also sharing large number of photos
and other multimedia content (e.g. video, text, audio, etc.) as part
of their service. All these in-network storage systems utilize
both free and paid subscription models.
Most Photo Sharing systems use traditional client-server
architecture. However, a minority of systems also offer a P2P mode
of operation.
3.1. Data Access Interface
Users can read (view) and write (store) objects (photos).
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3.2. Data Management Operations
Users can delete previously stored objects (photos).
3.3. Data Search Capability
Users can tag objects (photos) and/or organize them using
sophisticated web photo album generators. Users can then search for
objects (photos) matching desired criteria.
3.4. Access Control Authorization
We consider three types of Access Control Authorization: Public-
unrestricted, Public-restricted, and Private. Public-unrestricted
refers to content that is widely available to anyone (e.g.
Wikipedia.com). Public-restricted refers to content that is
available to a public which is restricted by certain criteria (e.g.
country or region), but does not require any confidential
credentials from the client. Finally, Private refers to content that
is only made available to clients presenting the required
credentials (e.g. password or key).
In the case of Photo Sharing, access to stored objects (photos)
typically can be Private, or Public-unrestricted.
3.5. Resource Control Interface
Not provided.
3.6. Discovery Mechanism
Usually by logging on to a central web page for the service and
entering the appropriate information to access the desired
information.
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3.7. Storage Mode
Objects (photos) are usually stored as files. They can then be
organized into meta-structures (e.g. albums, galleries, etc.) using
sophisticated web photo album generators.
4. Web Mail
Web Mail systems are email services primarily accessed via a web
browser as opposed to a desktop email client. Well known examples
of Web Mail systems are Google Gmail, Yahoo Mail, and Microsoft
Hotmail. A key aspect of these web based mail systems is that they
offer a relatively large amount of in-network storage to store
emails and attachments. The amount of network storage typically
starts from 1GB free of charge, and goes up to larger amounts which
may be charged. Some Web Mail systems, such as Yahoo, now claim to
offer "unlimited amount of (network) storage" [WebMail]. All Web
Mail systems use traditional client-server architecture.
4.1. Data Access Interface
Users can read and write objects (email).
4.2. Data Management Operations
Users can delete previously stored objects (email).
4.3. Data Search Capability
Users can tag objects (email) and/or organize them into folders.
Users can then search for objects (email) matching desired criteria
(including searching text within the body of the email).
4.4. Access Control Authorization
Access is Private.
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4.5. Resource Control Interface
Not provided.
4.6. Discovery Mechanism
Not provided.
4.7. Storage Mode
Objects (email) are usually stored as files. They can then be
organized into directories.
5. Conclusions
This draft describes two additional key in-network storage systems,
Photo Sharing and Web Mail, to be considered for the DECADE survey
of existing storage technologies. These two systems are very
popular and store a large amount of cumulative data in the network
and thus are instructive to consider for DECADE.
6. Security Considerations
This draft is a survey of existing in-network storage systems, and
does not introduce any security considerations beyond those of the
surveyed systems.
7. IANA Considerations
This document makes no request of IANA.
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8. References
8.1. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
8.2. Informative References
[I-D.draft-song-decade-problem-statement] Song, H., Zong, N., Yang,
Y., Alimi, R., "DECoupled Application Data Enroute
(DECADE) Problem Statement", draft-song-decade-problem-
statement-01 (Work in progress), March 8, 2010.
[I-D.draft-song-decade-survey] Alimi, R., Lu, Z., Song, H., Yang,
Y., "A Survey of In-network Storage Systems", draft-song-
decade-survey-03 (Work in progress), March 8, 2010.
[KodakGallery01] Kodak, "Kodak Gallery Home Page",
http://www.kodakgallery.com/gallery/welcome.jsp
[KodakGallery02] Wikipedia, "Kodak Gallery",
http://en.wikipedia.org/wiki/Kodak_Gallery
[Flickr] Flickr, "Flickr Home Page", http://www.flickr.com/
[Tumblr] Tumblr, "Tumblr Home Page", http://www.tumblr.com/
[WebMail] Wikipedia, "Comparison of webmail providers",
http://en.wikipedia.org/wiki/Comparison_of_webmail_provide
rs
9. Acknowledgments
Thanks to Serhad Doken and Milan Patel for their useful comments and
discussions.
Authors' Addresses
Akbar Rahman
InterDigital Communications, LLC
Email: Akbar.Rahman@InterDigital.com
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Juan Carlos Zuniga
InterDigital Communications, LLC
Email: JuanCarlos.Zuniga@InterDigital.com
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