Installation and User's Guide

sparse fileA file that is created with a length greaterthan the data it contains, leaving emptyspaces for the future addition of data.special fileOn AIX, UNIX, or Linux systems, a filethat defines devices for the system, ortemporary files that are created byprocesses. There are three basic types ofspecial files: first-in, first-out (FIFO);block; and character.SSL See Secure Sockets Layer.stabilized file spaceA file space that exists on the server butnot on the client.stanza A group of lines in a file that togetherhave a common function or define a partof the system. Each stanza is identified bya name that occurs in the first line of thestanza. Depending on the type of file, astanza is ended by the next occurrence ofa stanza name in the file, or by an explicitend-of-stanza marker. A stanza can alsobe ended by the end of the file.startup windowA time period during which a schedulemust be initiated.static serializationA copy-group serialization value thatspecifies that a file must not be modifiedduring a backup or archive operation. Ifthe file is in use during the first attempt,the storage manager cannot back up orarchive the file. See also serialization.Contrast with dynamic serialization, shareddynamic serialization, and shared staticserialization.storage agentA program that enables the backup andrestoration of client data directly to andfrom storage attached to a storage areanetwork (SAN).storage area network (SAN)A dedicated storage network that istailored to a specific environment,combining servers, systems, storageproducts, networking products, software,and services.storage hierarchy(1) A logical order of primary storagepools, as defined by an administrator. Theorder is typically based on the speed andcapacity of the devices that the storagepools use. The storage hierarchy isdefined by identifying the next storagepool in a storage pool definition. See alsostorage pool.(2) An arrangement of storage deviceswith different speeds and capacities. Thelevels of the storage hierarchy include:main storage, such as memory anddirect-access storage device (DASD)cache; primary storage (DASD containinguser-accessible data); migration level 1(DASD containing data in a space-savingformat); and migration level 2 (tapecartridges containing data in aspace-saving format).storage poolA named set of storage volumes that arethe destination that is used to store clientdata. A storage pool contains backupversions, archive copies, and files that aremigrated from space manager clientnodes. A primary storage pool is backedup to a copy storage pool. See alsoprimary storage pool, copy storage pool, andactive-data pool.storage pool volumeA volume that has been assigned to astorage pool. See also volume, active-datapool, copy storage pool, and primary storagepool.storage privilege classA privilege class that gives anadministrator the authority to control howstorage resources for the server areallocated and used, such as monitoringthe database, the recovery log, and serverstorage. See also privilege class.stub A shortcut on the Windows file systemthat is generated by the hierarchicalstorage management (HSM) client for amigrated file that allows transparent useraccess. A stub is the sparse filerepresentation of a migrated file, with areparse point attached.stub fileA file that replaces the original file on alocal file system when the file is migratedto storage. A stub file contains theinformation that is necessary to recall amigrated file from Tivoli Storage Managerstorage. It also contains additional690 IBM Tivoli Storage Manager for Windows Backup-Archive Clients: Installation and User's Guide