Compaq StorageWorks HSG60 ACS Solution Software V8.6 for Compaq Tru64 UNIX Installation and Configuration Guide

Glossary–12 HSG60 ACS Solution Software Version 8.6 for Compaq Tru64 UNIX Installation and Configuration
Guide
nonredundant
controller
configuration
(1) A single controller configuration. (2) A controller configuration that does
not include a second controller.
normal member A mirrorset member that, block-for-block, contains the same data as other
normal members within the mirrorset. Read requests from the host are always
satisfied by normal members.
normalizing Normalizing is a state in which, block-for-block, data written by the host to a
mirrorset member is consistent with the data on other normal and normalizing
members. The normalizing state exists only after a mirrorset is initialized.
Therefore, no customer data is on the mirrorset.
normalizing
member
A mirrorset member whose contents are the same as all other normal and
normalizing members for data that has been written since the mirrorset was
created or lost cache data was cleared. A normalizing member is created by a
normal member when either all of the normal members fail or all of the
normal members are removed from the mirrorset. See also copying member.
NVM Non-Volatile Memory. A type of memory where the contents survive power
loss. Also sometimes referred to as NVMEM.
OCP Operator control panel. The control or indicator panel associated with a
device. The OCP is usually mounted on the device and is accessible to the
operator.
other controller The controller in a dual-redundant pair that is connected to the controller
serving the current CLI session. See also this controller.
outbound fiber One fiber in a link that carries information away from a port.
parallel data
transmission
A data communication technique in which more than one code element (for
example, bit) of each byte is sent or received simultaneously.
parity A method of checking if binary numbers or characters are correct by counting
the ONE bits. In odd parity, the total number of ONE bits must be odd; in even
parity, the total number of ONE bits must be even.
parity bit A binary digit added to a group of bits that checks to see if errors exist in the
transmission.
parity check A method of detecting errors when data is sent over a communications line.
With even parity, the number of ones in a set of binary data should be even.
With odd parity, the number of ones should be odd.