User's Manual

Glossary 281
DDNS
Abbreviation for Dynamic Domain Name System.
DNS
Abbreviation for Domain Name System.
DRAC 4
Abbreviation for Dell Remote Access Controller 4.
DSU
Abbreviation for disk storage unit.
extended schema
A solution used with Active Directory to determine user access to DRAC 4; uses
Dell-defined Active Directory objects .
FQDN
Acronym for Fully Qualified Domain Names. Microsoft Active Directory only
supports FQDN of 64 bytes or fewer.
FSMO
Flexible Single Master Operation. It is Microsoft’s way of guaranteeing atomicity
of the extension operation.
GMT
Abbreviation for Greenwich Mean Time, which is the standard time common to
every place in the world. GMT nominally reflects the mean solar time along the
prime meridian (0 longitude) that runs through the Greenwich Observatory
outside of London, UK.
GPIO
Abbreviation for general purpose input/output.
GRUB
Acronym for GRand Unified Bootloader, a new and commonly-used Red Hat
Enterprise Linux loader.