director 2/64 service manual

director 2/64 service manual Glossary–5
Glossary
CRC
See cyclic redundancy check.
CTP/CTP2 card
See control processor (CTP2) card.
cyclic redundancy check (CRC)
System of error checking performed at both the sending and receiving station using the value
of a particular character generated by a cyclic algorithm. When the values generated at each
station are identical, data integrity is confirmed.
DASD
Acronym for direct access storage device.
datagram
See Class 3 Fibre Channel service.
default
Pertaining to an attribute, value, or option that is assumed when none is explicitly specified.
default zone
Contains all attached devices that are not members of a separate zone.
destination identifier (D_ID)
Address identifier that indicates the targeted destination of a data frame.
device
Product (server or storage), connected to a managed director, that is not controlled directly by
the Product Manager application. See also node.
diagnostics
Procedures used by computer users and service personnel to diagnose hardware or software
error conditions.
dialog box
Dialog box is a window containing informational messages or data fields to be modified or
filled in with desired options.
D_ID
See destination identifier.