Compaq HSZ80 manual GL-16Glossary, Storage subsystem

GL–16Glossary
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 Compaq 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.
	StorageWorks systems include integrated SBBs and array controllers to form
	storage subsystems. System-level enclosures to house the shelves and
	standard mounting devices for SBBs are also included.
stripe	The data divided into blocks and written across two or more member disks in
	an array.
striped mirrorset	See RAID level 0+1.
stripeset	See RAID level 0.
stripe size	The stripe capacity as determined by n–1 times the chunksize, where n is the
	number of RAIDset members.
striping	The technique used to divide data into segments, also called chunks. The
	segments are striped, or distributed, across members of the stripeset. This
	technique helps to distribute hot spots across the array of physical devices to
	prevent hot spots and hot disks.
	Each stripeset member receives an equal share of the I/O request load,
	improving performance.