HP 316095-B21 - StorageWorks Edge Switch 2/24 Service Manual page 272

Glossary
D
database
A collection of data with a given structure for accepting, storing, and providing on-demand
data for multiple users. (T)
data directory
Critical information for all managed products (including Directors and Edge Switches).
Information stored here includes:
• All configuration data
• All log files
• Call-home settings
• Firmware library
• Zoning library
datagram
Synonym for Class 3 Fibre Channel
dB
See decibel.
dBm
Decibels referenced to one milliwatt. Zero dBm equals one milliwatt, with a logarithmic
relationship as the value increases (D).
DC
See direct current.
decibel
Abbreviated as dB. A standard unit used to express gain or loss of optical power, expressed as
the ratio of input power to output power on a logarithmic basis (D).
default
Pertaining to an attribute, value, or option that is assumed by a system when none is explicitly
specified (D, I).
default zone
A zone that contains all attached devices that are not members of a separate active zone.
destination
A point or location, such as a processor, Director or Edge Switch, or server, to which data is
transmitted (D).
Glossary–12
service.
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