- data confidentiality
A security service that prevents exposure of application data to unauthorized parties while the data is in flight.
- data integrity
A security service that detects modifications made to data while in flight. Data integrity can be implemented as connectionless or connection-oriented.
- data origin authentication
A security service that verifies that each message actually originated from the source claimed in the header.
- Data Streaming (DS) protocol
The synchronous block multiplexer protocol used by mainframes to access storage.
- Dense Wavelength Division Multiplexing (DWDM)
A physical layer wide area transport technology that combines frequency division multiplexing techniques with time division multiplexing techniques.
- Differentiated Services architecture (DiffServ)
A stateless QoS model used in IP networks as defined in IETF RFC 2475.
- Direct Access File System (DAFS)
A file-level protocol for accessing storage across a Direct Access Transport (DAT).
- Direct Access Transport (DAT)
A class of interconnect technologies based on Remote direct memory access (RDMA).
- Direct Attached Storage (DAS)
Disk or tape storage that is directly attached to a single host. It is typically attached via SPI, SAS, PATA, or SATA.
- Direct-Coupled Interlock (DCI) protocol
The asynchronous block multiplexer protocol used by mainframes to access storage.
- disk control unit
A device class within a mainframe storage channel architecture used to control physical storage devices.
- disk drive
A generic term referring to a floppy drive or a hard drive.
- distance vector protocol
A category of routing protocols characterized by the exchange of routing table entries between topologically adjacent routers.
- droop
The resulting lag in throughput that results from link buffer exhaustion. Droop occurs when the round-trip time of a link is greater than the time required to transmit sufficient data to fill the receiver's link-level buffers.
- Dynamic Multi-Pathing (DMP)
A generic term describing the ability of end nodes to load balance across multiple iSCSI or FCP sessions.
- Dynamic Packet Transport (DPT)
An RPR implementation developed by Cisco Systems and used, in part, as the basis for IEEE 802.17.
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