NonStop S-Series Hardware Installation and FastPath Guide (G06.26+)

Glossary
HP NonStop S-Series Hardware Installation and FastPath Guide—529876-001
Glossary-12
cartridge access port (CAP)
cartridge access port (CAP). The component on a tape library where you insert cartridges
into and remove cartridges from the library.
caught signal. A programmatic signal that is delivered to a process that has a signal-
handling function for it. When the signal is caught, the process is interrupted, and the
signal-handling function executes.
CBB. See common base board (CBB).
CCITT. International Telegraph and Telephone Consultative Committee.
CCSA. See Common Communication ServerNet adapter (CCSA).
CE. Customer engineer. See service provider.
cell. See storage pool.
central processing unit (CPU). Historically, the main data processing unit of a computer.
HP NonStop™ servers have multiple cooperating processors rather than a single CPU.
See also processor.
Challenge Handshake Authentication Protocol (CHAP). An Internet-standard protocol for
verifying encrypted passwords. CHAP is a security protocol that is implemented using
Point-to-Point Protocol (PPP). The OSM and TSM Notification Directors use CHAP to
maintain security during dial-outs.
channel. An information route for data transmission. See also ServerNet link.
CHAP. See Challenge Handshake Authentication Protocol (CHAP).
character. A sequence of one or more bytes representing a single character; used for the
organization, representation, or control of data. A single-byte character consists of
eight bits that represent a character. A multibyte character uses one or more bytes to
represent a character. A wide character is a fixed-width character wide enough to hold
any coded character supported by an implementation.
The ISO C standard defines the term multibyte character; a single-byte character is a
special case of multibyte character.
character set. A finite set of characters (letters, digits, symbols, ideographs, or control
functions) used for the organization, representation, or control of data. See also code
set.
character special file. In the Open System Services (OSS) environment, a device that is
treated as a file for which all input or output must occur in character bytes. Traditionally,
such files are interactive terminals, and the ISO/IEC IS 9945-1:1990 standard defines
only the access to such terminal files. See also terminal. Contrast with block special
file.