HP 316095-B21 - StorageWorks Edge Switch 2/24 User Manual page 139

Glossary
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
Domain identifier. A number 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. The preferred domain ID is the domain ID value that a switch requests from the
principal switch. If the value has not been allocated to another switch in the fabric, it will be
granted by the principal switch and will become the requesting switch's active domain ID. The
active domain ID is the domain ID that has been assigned by the principal switch and that a
switch is currently using.
domain name server
In TCP/IP, a server program that supplies name-to-address translation by mapping domain
name to internet addresses. (D)
DRAM
See dynamic random access memory.
drop-down menu
A menu that displays when a heading in a navigation bar is clicked on with the mouse. The
objects that display in the drop-down menus are organized by their headings in the navigation
bar.
dump
The file that is created when the Director detects a software fault. It contains various data
fields that, when extracted, assist in the debugging of software.
dynamic connection
A connection between two ports, established or removed by the Directors and that, when
active, displays as one continuous link. See also connectivity attribute. See also blocked
connection; connectivity capability; dynamic connectivity; unblocked connection.
dynamic connectivity
The capability that allows connections to be established and removed at any time.
dynamic random access memory
DRAM. Random access memory that resides in a cell comprised of a capacitor and transistor.
DRAM data deteriorates (that is, is dynamic) unless the capacitor is periodically recharged by
the controlling microprocessor. DRAM is slow, but relatively inexpensive (D). Contrast with
static random access memory.
embedded web server user guide Glossary–9