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Companion File
"Companion file" is another name for the low-resolution proxy file that Buffalo Surveillance
Server can create when capturing or ingesting videos.
Component
A component is a single, independently running application or utility that might or might not
interact with or have dependencies on other applications. Buffalo Surveillance Server software
consists of several separate components (for example, clients and servers) that work together
to protect your files.
CRC
CRC stands for "cyclic redundancy check." Buffalo Surveillance Server uses CRCs to ensure
data integrity by detecting accidental alterations of data during transmission or storage. Using
this method, a unique numeric CRC value is assigned to the files that are being captured or
ingested. An algorithm calculates this value based on the file's size, data stream, and other
unique characteristics. The CRC value is calculated on the client host computer as data is
sent to Vaults. It is also calculated independently as the Vault is writing the files to its storage
device.
When the data write sequence is completed, the Vault compares the client- and server-
calculated values. If they match, the data on the storage media is considered valid. If they
don't match, the files are marked with an error.
Buffalo Surveillance Server's uses CRCs for data verification every time stored files are moved
or replicated within the Information Repository. CRCs provide the same level of data continuity
verification as other methods that require a read-after-write of the stored data, but CRCs do so
with much higher performance and less resource overhead.
Data Storage Area
The Data Storage Area is the space on media used to store protected files.
Default
A default value or setting is the value or setting that a device or program automatically selects
if you do not specify an alternative.
Default Location
"Default location" defines where, by default, media will be stored and managed. Wherever in
Buffalo Surveillance Server there is an option to use a default location, Buffalo Surveillance
Server will use the default location.
Glossary
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