Installation Manual

HP StorageWorks File System Extender Software installation guide for Linux 79
debug file
(FSE debug file)
A log file of a single FSE process, which records the execution trace of operations inside the
process. FSE debug files are created only if tracing in FSE is enabled (typically on request of
technical support personnel of FSE). FSE debug files are located in the directory
/var/opt/fse/log/debug (on Linux platform) or in the directory
%InstallPath%\var\log\debug (on Windows platform).
deletion policy A set of rules that define expiration periods for groups of directories on an HSM file system.
Files which are older than the expiration period defined by the corresponding deletion policy
can be automatically deleted using the fsefile command. Configuration parameters for the
deletion policy are specified in the FSE partition configuration file. Each FSE partition has its
own deletion policy.
dirty file A file on an HSM file system which has been recently created and not yet migrated, or a file
that has changed since the last migration or recall.
disabled drive An FSE drive which is temporarily put out of operation and cannot be used by migration, recall,
administrative, maintenance and recovery jobs. This is done by changing its status in the
Resource Management Database to disabled. The status is set by an FSE administrator with
the fsedrive command. The example situation that calls for disabling the drive is when it
needs cleaning or servicing.
disk buffer
(FSE disk buffer)
One or more file systems, located on the consolidated FSE system or the FSE server, which are
configured to store temporary data used by some of the FSE processes. The FSE disk buffer is
managed by the Resource Manager. Separate file systems (on Linux platform) or volumes (disk
partitions, on Windows platform) are usually allocated for FSE disk buffer.
disk media pool
(FSE disk media pool)
An FSE disk media pool is a special type of FSE media pool where the migrated data is stored
on disks rather than on tape media. FSE disk media therefore emulate FSE tape media, with the
advantage of being much faster for migrations and recalls. Using and managing FSE disk
media pools is similar to using and managing FSE tape media pools. See also ”media pool
(FSE media pool)”.
disk medium
(FSE disk medium)
A disk medium is one file system mounted to a subdirectory of the directory
/var/opt/fse/dm (on Linux platform) or the directory %InstallPath%\var\dm (on
Windows platform). Disk media emulates tape media and is used for regular archiving of the
data on HSM file systems. The advantage of using disk media is in shortened recall of offline
files. See also ”medium (FSE medium)”.
drive
(FSE drive)
A tape drive inside the FSE library, configured to be used by the FSE implementation.
duplication See ”media duplication”.
enabled drive An FSE drive which is put back in operation by changing its status in the Resource
Management Database to online. This status is set manually using the fsedrive command.
An enabled drive is fully available for FSE system operation.
erroneous drive An FSE drive which is temporarily put out of operation and cannot be used by migration, recall,
administrative, maintenance and recovery jobs. Its status is automatically set in the Resource
Management Database to error as soon as the problems in the drive are detected by the
Back End Agent. Usually, such problems occur when the drive needs servicing.
error log
(FSE error log)
A file that records error messages of the running FSE processes. It stores information on all
major errors that occur during FSE system operation. These errors often require an intervention
of the FSE administrator. Major errors are, for example, failed initialization of an FSE medium,
erroneous FSE drive operation, migration job failure, and so on. The FSE error log also provides
usage statistics that can be used for fine tuning of the FSE configuration. The FSE error log,
named error.log, is located in the directory /var/opt/fse/log (on Linux platform) or in
the directory %InstallPath%\var\log (on Windows platform).