HP Array Controller HSG V8.7 Software - Manual (Page 545)

Glossary G–19
service rate The rate at which an entity is able to service requests For example, the
rate at which an Arbitrated Loop is able to service arbitrated requests.
signal converter See SCSI bus signal converter.
SIMM Single Inline Memory Module.
single ended I/O module A 16-bit I/O module. See also I/O module.
single-ended SCSI bus An electrical connection where one wire carries the signal and another
wire or shield is connected to electrical ground. Each signal’s logic
level is determined by the voltage of a single wire in relation to ground.
This is in contrast to a differential connection where the second wire
carries an inverted signal.
spareset A collection of disk drives made ready by the controller to replace
failed members of a storageset.
storage array An integrated set of storage devices.
storage array subsystem See storage subsystem.
storageset (1) A group of devices configured with RAID techniques to operate as
a single container. (2) Any collection of containers, such as stripesets,
mirrorsets, striped mirrorsets, and RAIDsets.
storage subsystem The controllers, storage devices, shelves, cables, and power supplies
used to form a mass storage subsystem.
storage unit The general term that refers to storagesets, single-disk units, and all
other storage devices that are installed in your subsystem and accessed
by the host. A storage unit can be any entity that is capable of storing
data, whether it is a physical device or a group of physical devices.
StorageWorks A family of DIGITAL modular data storage products that allow
customers to design and configure their own storage subsystems.
Components include power, packaging, cabling, devices, controllers,
and software. Customers can integrate devices and array controllers in
StorageWorks enclosures to form storage subsystems.