Multibus_Failover - HP storageworks HSG80 Reference Manual

Glossary
metadata
The data written to a disk for the purposes of controller administration. Metadata improves
error detection and media defect management for the disk drive. It is also used to support
storageset configuration and partitioning. Non transportable disks also contain metadata to
indicate they are uniquely configured for StorageWorks environments. Metadata can be
thought of as "data about data."
mirrored write-back caching
A method of caching data that maintains two copies of the cached data. The copy is available if
either cache module fails.
mirroring
The act of creating an exact copy or image of data.
mirrorset
See RAID level 1
MIST
Module Integrity Self-Test.
MSCP
Mass Storage Control Protocol. MSCP is the protocol by which blocks of information are
transferred between the host and the subsystem controller on the CI bus.
multibus failover
Allows the host to control the failover process by moving the unit(s) from one controller to
another.
N_Port
A port attached to a node for use with point-to-point topology or fabric topology.
network
A data communication, a configuration in which two or more terminals or devices are
connected to enable information transfer.
NL_Port
A port attached to a node for use in all three topologies.
node
In data communications, the point at which one or more functional units connect transmission
lines. In Fibre Channel, a device that has at least one N_Port or NL_Port.
Glossary–16 HSG80 Array Controller V8.7 Command Line Interface Reference Guide