6760 ServerNet/DA Manual

Glossary
6760 ServerNet/DA Manual—424879-003
Glossary-77
SCP
SCP. See Subsystem Control Point (SCP).
SCSI. See small computer system interface (SCSI).
SCSI object type. The Subsystem Control Facility (SCF) object type for an Open SCSI
device.
SCSI passthrough terminator. A bus-terminating plug connected between a cable and the
external connector of a customer-replaceable unit (CRU). The SCSI passthrough
terminator contains the necessary termination resistors required by the SCSI bus. See
also terminator
.
SCSI plug-in card (S-PIC). A plug-in card (PIC) for the 6760 ServerNet device adapter
(ServerNet/DA) that uses a small computer system interface (SCSI) interface to
connect devices to an HP NonStop™ S-series system. See also plug-in card (PIC)
and fiber-optic plug-in card (F-PIC)
.
SCSI ServerNet addressable controller (S-SAC). A ServerNet addressable controller
(SAC) that is contained within a small computer system interface (SCSI) plug-in card
(S-PIC).
SCSI terminator. See terminator.
SE. System engineer. See service provider.
SEB. See ServerNet expansion board (SEB).
SEB port. A connector on ServerNet expansion boards (SEBs) used for ServerNet links.
An SEB has six emitter-coupled logic (ECL)-based ServerNet ports. See also MSEB
port.
Security Manager Process (SMP). A component of the Safeguard subsystem that
manages all changes to the subject and object databases and authenticates user
logon attempts.
SEM. See ServerNet extender module (SEM).
semaphore. A mechanism used to provide multiple processes with access to a shared data
object.
sensitive command. A Subsystem Control Facility (SCF) command that can be issued only
by a user with super-group access, by the owner of the subsystem, or by a member of
the group of the owner of the subsystem. The owner of a subsystem is the user who
started that subsystem (or any user whose application ID is the same as the server
ID—the result of a PROGID option that requires super-group access). Contrast with
nonsensitive command
.
separately derived power source. A facility wiring system where power is derived from a
generator, transformer, or converter windings and there is no direct electrical