Grid Computing definitions beginning with D

Grid Computing (280) : 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 # Definitions 1 - 7 of 7 beginning with D

DAG (Directed Acyclic Graph) - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

A directed graph containing no directed cycles, i.e. closed directed loops. See also: Mathworld's definition.
Open Grid Forum - Cite This Source - This Definition
Browse Related Terms: Acyclic Digraph, hosting environment, standalone container

Data Center - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

A facility that provides a suitable environment (power, cooling, network connectivity, management services) for housing information technology equipment (servers, storage) and providing IT services and support to customers.
Oracle - Cite This Source - This Definition
Browse Related Terms: AI (Artificial Intelligence), Consolidate, ITS (Integrated Technology Services), ODN (Open Data Network), Project eLiza, VPN (Virtual Private Network)

Also listed in

All > Technology > Storage
All > Technology > Virtualization

data channel - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

Communication link(s) over which the actual data of interest flows.
High Bandwidth; authenticated by default; encryption and integrity protection optional.

Globus Toolkit - Cite This Source - This Definition
Browse Related Terms: Client, client/server transfer, command/response, control channel, dual channel protocol, extended block mode (MODE E), MODE command, server, stream mode (MODE S), third party transfers

Also listed in

All > Technology > Telecommunications

Data Provisioning - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

Making data available when and where its needed and as it becomes available.
Oracle - Cite This Source - This Definition
Browse Related Terms: Provisioning, Server Provisioning, Software Provisioning, Storage Provisioning

Decommissioning - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

Decommissioning is the act of putting a grid component into the destroyed state so that it is no longer available to the GME. See also: Grid Component, Grid Management Entity
Open Grid Forum - Cite This Source - This Definition
Browse Related Terms: Compute Element, GME Component, GME (Grid Management Entity), Grid Component, Network Element, resource, service, Storage Element

Also listed in

All > Technology > Defense

DFS (Distributed Files System) - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

A Distributed Files System is a type of mountable networked file system.
IBM - Cite This Source - This Definition
Browse Related Terms: AFS (Andrew File Systems), GPFS (General Parallel File System), logical file name, Network File System (NFS), NFS (Networked File System), physical file name

dual channel protocol - permalink - collapse

All > Technology > Parallel Computing > Grid Computing

[fixme - this term does not appear anywhere in the gridftp docs] GridFTP uses two channels:
- One of the channels, called the control channel, is used for sending commands and responses. It is low bandwidth and is encrypted for security reasons.
- The second channel is known as the data channel. Its sole purpose is to transfer the data. It is high bandwidth and uses an efficient protocol.
By default, the data channel is authenticated at connection time, but no integrity checking or encryption is performed due to performance reasons. Integrity checking and encryption are both available via the client and libraries.
Note that in GridFTP (not FTP) the data channel may actually consist of several TCP streams from multiple hosts.

Globus Toolkit - Cite This Source - This Definition
Browse Related Terms: Client, client/server transfer, command/response, control channel, data channel, extended block mode (MODE E), MODE command, server, stream mode (MODE S), third party transfers

Grid Computing (280) : 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 #