Installation Manual

HP StorageWorks File System Extender Software installation guide for Linux 85
recall, recall job A process, executed by the Partition Manager, that copies the file contents from the FSE media
to the HSM file system. Once the process is completed, the offline file becomes online again. Its
file entry is then added to the release candidate list.
recovery
(FSE recovery)
A process, executed by the Partition Manager, that recovers the HSM file system or the File
System Catalog (FSC) without requiring FSE backup copies. The HSM file system is recreated
from the Name Space Catalog (NSC), while the FSC is recreated either from Fast Recovery
Information (FRI) or from migrated metadata. FSE recovery can be used as a fallback if restore
of FSE is not possible due to missing FSE backup data. A recovery job is triggered explicitly on
an FSE user's request with the fserecover command.
recovery job See ”recovery (FSE recovery)”.
recycled medium
volume
An FSE medium volume from which all selected data was copied to another medium volume
during media reorganization. The data on recycled medium volumes can no longer be
retrieved, but the storage space on such volumes can be reused for new migrated data.
redundant data copy
recreation
A process in FSE that recreates a copy of a file set that has become unreadable, most probably
because the FSE medium to which it was migrated is damaged. The process recreates the
damaged data copy using copies of the same data that were migrated to other FSE media
pools. Therefore, the main prerequisite to execute this process is a multiple media pool
configuration of the corresponding FSE partition. A redundant data copy recreation process is
triggered manually by the FSE administrator.
regular release Release of files on an HSM file system that are on the release candidate list and meet the
predefined criteria, triggered when the high watermark of usage is reached on the HSM file
system. The process is stopped when the low watermark on the HSM file system is reached. See
also ”release”.
release A process that usually follows a migration or recall, executed by the Hierarchical Storage
Manager. This process removes the file data from the HSM file system, leaving only the file
header. Release is triggered by the Partition Manager according to the defined watermarks.
After release, files are offline and their file entries are removed from the release candidate list.
release candidate An online file that is scheduled for release and that has either been migrated or was brought
online by recall.
release candidate list A list of online files that have already been migrated or that have recently been recalled and
are waiting to be released. The list is maintained by the Hierarchical Storage Manager.
release policy A set of rules by which the release process for files on a release candidate list is initiated.
Configuration parameters for the release policy are specified in the FSE partition configuration
file. Each FSE partition has its own release policy.
resource
(FSE resource)
Either an FSE partition, FSE library, FSE drive, FSE media pool, or FSE medium including
medium volumes. Each FSE resource is configured using an FSE configuration file and has an
entry in the Resource Management Database.
Resource
Management
Database (RMDB)
A database with records of all configured FSE resources. It contains all relevant resource
information, such as configuration parameters, resource characteristics, current status, usage
statistics, and relations to other resources. The Resource Management Database is located in
the directory /var/opt/fse/rmdb (on Linux platform) or in the directory
%InstallPath%\var\rmdb directory (on Windows platform).
Resource Manager
(RM)
An FSE daemon (service) responsible for managing data in the Resource Management
Database, allocating and releasing FSE resources and providing resource information to other
FSE daemons (services) and processes. The Resource Manager process name is fse-rm.