IBM HPSS manual Hpss Installation Guide July Release 6.2 Revision 247, Device

device	A physical piece of hardware, usually associated with a drive, that is capable
	of reading or writing data.
directory	An HPSS object that can contain files, symbolic links, hard links, and other
	directories.
dismount	An operation in which a cartridge is either physically or logically removed
	from a device, rendering it unreadable and unwritable. In the case of tape
	cartridges, a dismount operation is a physical operation. In the case of a fixed
	disk unit, a dismount is a logical operation.
DNS	Domain Name Service
DOE	Department of Energy
drive	A physical piece of hardware capable of reading and/or writing mounted
	cartridges. The terms device and drive are often used interchangeably.
EFS	External File System
ERA	Extended Registry Attribute
ESCON	Enterprise System Connection
event	A log record message type used to log informational messages (e.g.,
	subsystem starting, subsystem terminating).
export	\
	An operation in which a cartridge and its associated storage space are
	removed from the HPSS system Physical Volume Library. It may or may not
	include an eject, which is the removal of the cartridge from its Physical
	Volume Repository.
FDDI	Fiber Distributed Data Interface
file	An object than can be written to, read from, or both, with attributes including
	access permissions and type, as defined by POSIX (P1003.1-1990). HPSS
	supports only regular files.
file family	An attribute of an HPSS file that is used to group a set of files on a common
	set of tape virtual volumes.
fileset	A collection of related files that are organized into a single easily managed
	unit. A fileset is a disjoint directory tree that can be mounted in some other
	directory tree to make it accessible to users.
fileset ID	A 64-bit number that uniquely identifies a fileset.
fileset name	A name that uniquely identifies a fileset.
file system ID	A 32-bit number that uniquely identifies an aggregate.
FTP	File Transfer Protocol
Gatekeeper	An HPSS server that provides two main services: the ability to schedule the
	use of HPSS resources referred to as the Gatekeeping Service, and the ability
	to validate user accounts referred to as the Account Validation Service.

HPSS Installation Guide	July 2008
Release 6.2 (Revision 2.0)	247