Network-Attached Secure Disks

Network-Attached Secure Disks

Network-Attached Secure Disks (NASD) is 1997-2001 research project of Carnegie Mellon University, with the goal of providing cost-effective scalable storage bandwidth.

Overview

NASD reduces the overhead on the file server (file manager) by allowing storage devices to transfer data directly to clients. Most of the file manager's work is offloaded to the storage disk without integrating the file system policy into the disk. Most client operations like Read/Write go directly to the disks; less frequent operations like authentication go to the file manager. Disks transfer variable-length objects instead of fixed-size blocks to clients. The File Manager provides a time-limited cachable capability for clients to access the storage objects. A file access from the client to the disks has the following sequence:

  1. The client authenticates itself with the file manager and requests for the file access.
  2. If the client can be granted access to the file requested, the client receives the network location of NASD disks and their capability.
  3. If the client is accessing the disk for the first time, it receives a time-limited key for the establishment of secure communication to the disk.
  4. The file manager informs the corresponding disk using an independent channel.
  5. From now on, the client directly accesses the NASD disks by giving the capability it received and further data transfers go through the network, bypassing the file manager.

References

External links


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Object storage device — An Object based Storage Device (OSD) is a computer storage device, similar to disk storage but working at a higher level. Instead of providing a block oriented interface that reads and writes fixed sized blocks of data, an OSD organizes data into …   Wikipedia

  • NASD (disambiguation) — NASD may refer to:*NASD, Inc., formerly the National Association Of Securities Dealers *Network Attached Secure Disks, a Carnegie Mellon University research project *National Ag Safety Database, maintained by the Centers for Disease Control and… …   Wikipedia

  • NASD — may refer to: National Agricultural Safety Database, maintained by the Centers for Disease Control and Prevention National Amalgamated Stevedores and Dockers, a British trade union National Association of Securities Dealers, the former name of… …   Wikipedia

  • Garth A. Gibson — Garth Gibson is a Computer Scientist from Carnegie Mellon University. Born in Aurora, Ontario, he holds a Ph.D. and an MSc in Computer Science from the University of California, Berkeley and a B.Math in Computer Science from the University of… …   Wikipedia

  • Abkürzungen/Computer — Dies ist eine Liste technischer Abkürzungen, die im IT Bereich verwendet werden. A [nach oben] AA Antialiasing AAA authentication, authorization and accounting, siehe Triple A System AAC Advanced Audio Coding AACS …   Deutsch Wikipedia

  • Liste der Abkürzungen (Computer) — Dies ist eine Liste technischer Abkürzungen, die im IT Bereich verwendet werden. A [nach oben] AA Antialiasing AAA authentication, authorization and accounting, siehe Triple A System AAC Advanced Audio Coding AACS …   Deutsch Wikipedia

  • Liste von Abkürzungen (Computer) — Dies ist eine Liste technischer Abkürzungen, die im IT Bereich verwendet werden. Inhaltsverzeichnis A B C D E F G H I J K L M N O P Q R S T U V W X Y Z siehe auch: Liste von Dateiendu …   Deutsch Wikipedia

  • List of computing and IT abbreviations — This is a list of computing and IT acronyms and abbreviations. Contents: 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y …   Wikipedia

  • Enterprise content management — (ECM) is a set of technologies used to capture, store, preserve and deliver content and documents and content related to organizational processes. ECM tools and strategies allow the management of an organization s unstructured information,… …   Wikipedia

  • Management features new to Windows Vista — This article is part of a series on Windows Vista New features Overview Technical and core system Security and safety Networking technologies I/O technologies Management and administration Removed features …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”