FW 05.01.00 and SW 07.01.00 HP StorageWorks Directors and Edge Switches Glossary (AA-RU5JA-TE, June 2003)

Glossary
10 Directors and Edge Switches Glossary
director
An intelligent Fibre Channel switching device providing any-to-any port connectivity between
nodes (end devices) on a switched fabric. The director sends data transmissions (data frames)
between nodes in accordance with the address information present in the frame headers of those
transmissions.
DNS name
Domain name system (or domain name service). Host or node name for a device or managed
product that is translated to an internet protocol (IP) address through a domain name server.
domain
A Fibre Channel term describing the most significant byte in the node port (N_Port) identifier
for the Fibre Channel device. It is not used in the Fibre Channel small computer system
interface (FC-SCSI) hardware path ID. It is required to be the same for all SCSI targets logically
connected to a Fibre Channel adapter.
domain ID
Number (1 through 31) that uniquely identifies a switch in a multiswitch fabric. A distinct
domain ID is automatically allocated to each switch in the fabric by the principal switch.
domain name service
See DNS name.
dynamic connection
A connection between two ports, established or removed by the directors and, when active,
displays as one continuous link. See also connectivity attribute, blocked connection,
connectivity capability, dynamic connectivity, and unblocked connection.
dynamic connectivity
The capability that allows connections to be established and removed at any time.
E_D_TOV
See error-detect time-out value.
E_Port
See expansion port.
Embedded Web Server
(EWS) — Web-based interface that allows administrators or operators with a browser-capable
PC and Internet connection to monitor and manage a director. The interface provides a GUI
similar to the Product Manager application and supports director configuration, statistics
monitoring, and basic operation.
error-detect time-out value
(E_D_TOV) — User-specified value that defines the time a director or switch waits for an
expected response before declaring an error condition.