IBM HPSS manual Hpss Installation Guide July Release 6.2 Revision 253, Ssm

SS	HPSS Storage Service
SSA	Serial Storage Architecture
SSM	Storage System Management
SSM session	The environment in which an SSM user interacts with the SSM System
	Manager to monitor and control HPSS. This environment may be the
	graphical user interface provided by the hpssgui program, or the command
	line user interface provided by the hpssadm program.
stage	To copy file data from a level in the file’s hierarchy onto the top level in the
	hierarchy.
start-up	An HPSS SSM administrative operation that causes a server to begin
	execution.
status	A log record message type used to log processing results. This message type
	is being used to report status from the HPSS Accounting process.
STK	Storage Technology Corporation
storage class	An HPSS object used to group storage media together to provide storage for
	HPSS data with specific characteristics. The characteristics are both physical
	and logical.
storage hierarchy	An ordered collection of storage classes. The hierarchy consists of a fixed
	number of storage levels numbered from level 1 to the number of levels in the
	hierarchy, with the maximum level being limited to 5 by HPSS. Each level is
	associated with a specific storage class. Migration and stage commands result
	in data being copied between different storage levels in the hierarchy. Each
	Class of Service has an associated hierarchy.
storage level	The relative position of a single storage class in a storage hierarchy. For
	example, if a storage class is at the top of a hierarchy, the storage level is 1.
storage map	An HPSS object managed by the Core Server to keep track of allocated
	storage space.
storage segment	An HPSS object managed by the Core Server to provide abstract storage for a
	bitfile or parts of a bitfile.
Storage Service	The portion of the Core Server which provides control over a hierarchy of
	virtual and physical storage resources.
storage subsystem	A portion of the HPSS namespace that is managed by an independent Core
	Server and (optionally) Migration/Purge Server.
Storage System Management	An HPSS component that provides monitoring and control of HPSS via a
	windowed operator interface or command line interface.
stripe length	The number of bytes that must be written to span all the physical storage
	media (physical volumes) that are grouped together to form the logical storage
	media (virtual volume). The stripe length equals the virtual volume block size
	multiplied by the number of physical volumes in the stripe group (i.e., stripe
	width).

HPSS Installation Guide	July 2008
Release 6.2 (Revision 2.0)	253