STONEFLY ISC-1208s, Руководство по установке

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StoneFly ISC Setup Guide Glossary
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A disk subsystem which includes control software with the capability to organize disks as
disk arrays.
Disk Array Subsystem Disk Drive
A non-volatile, randomly addressable, writable data storage device. Subdivision of a disk
drive, disk array, or RAID array.
Disk Partitions Distributed Lock Manager (DLM)
Software, hardware or a combination of hardware and software that prevents multiple
writers from altering a data element simultaneously or in a fashion that would lead to data
corruption.
Failed Over
A mode of operation for failure-tolerant systems in which a component has failed and its
function has been assumed by a redundant component. A system operating in a failed-over
mode that protects against single failures is not failure tolerant, since a failure of the
redundant component may render the system unable to function. Some systems (e.g.,
clusters) are able to tolerate more than one failure; these remain failure tolerant until no
redundant component is available to protect against further failures.
FailOver
The automatic substitution of a functionally equivalent system component for a failed one.
FailOver automatically redirects user requests from the failed or down system to the backup
system that takes over the operations of the primary system.
File Server
A computer whose primary purpose is to serve files to clients. A file server is a general-
purpose computer capable of hosting additional applications or capable of only serving files.
The server is also called a host.
File System
Software that imposes structure on the address space of one or more physical or logical
disks so that applications may deal more conveniently with abstract-named data objects of
variable size (files). File systems are often supplied as operating system components but are
implemented and marketed as independent software components.
Graphical User Interface (GUI)
A user interface for intelligent devices that is characterized by pictorial displays and highly
structured forms-oriented input.