Technical data

GL–11
Compaq HSG80 Array Controller ACS Version 8.3 Maintenance and Service Guide
nominal
membership
The desired number of mirrorset members when the mirrorset is fully
populated with active devices. If a member is removed from a mirrorset, the
actual number of members may fall below the “nominal” membership.
node In data communications, the point at which one or more functional units
connect transmission lines.
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 is 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 your current CLI session. See also this controller.
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.