Installation Manual
84
Network File System
(NFS)
The file-sharing protocol used in UNIX networks. This is one of the protocols that can be used
for accessing files on an HSM file system from a remote machine, particularly a Linux client.
offline file A file whose contents were migrated to one or more FSE media (according to the number of
copies defined), and then removed from the HSM file system. The header and extended
attributes of an offline file are left intact and remain on the HSM file system. An offline file
becomes online at an FSE user's request, when its contents are recalled from the FSE media.
offline medium An FSE medium which is temporarily put out of operation and physically removed from the FSE
library.
online file A file on an HSM file system that is ready to be used by an application. A file is online
immediately after it is stored on the HSM file system, regardless of whether it was newly created
or recalled from FSE media. An online file becomes offline when it is released.
online medium An FSE medium that is physically present in the FSE library and which does not have its status
set to unusable.
ordinary LAN A network, usually a company LAN, to which systems are attached using their primary network
adapters.
ordinary LAN
connection
A connection between parts of the FSE implementation which uses ordinary LAN for
communication purposes.
package
(FSE package)
A package with FSE software that will be installed to an FSE implementation.
partition
(FSE partition)
A configurable entity used by the FSE implementation to split the storage and configure it
according to user requirements. Each FSE partition is related to a single HSM file system and
one or more FSE media pools. It has its own policies, File System Catalog, and Hierarchical
Storage Management Database.
Partition Manager
(PM)
An FSE daemon (service) that executes and controls the migration, release, and recall processes
for a single FSE partition, according to the policies defined in the FSE partition configuration
file. The Partition Manager process name is fse-pm.
performance disk A disk with a high throughput which stores HSM file systems. Depending on the location of a
particular HSM file system, it needs to be locally mounted either on the consolidated FSE system
or on an external FSE client.
primary storage
space
A logical volume (disk partition) used to store the HSM file system.
private network A dedicated network to which systems are attached using their secondary network adapters.
private network
connection
A connection between parts of the FSE implementation which uses private network for
communication purposes.
process
(FSE process)
A process running on an FSE implementation that performs FSE-specific tasks.
recall policy A rule by which recall jobs for files on an HSM file system are conducted. Since recall is started
either implicitly or explicitly on an FSE user's request, the only configurable parameter specifies
the maximum time the user should wait for the file to become online. This parameter is defined
in the FSE partition configuration file. Each FSE partition has its own recall policy.
recall retention time A period of time during which a recalled file is kept online before it is released again. See also
”retention time”.