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What is the .RRD File Extension?

.RRD File Extension Description:

The term RRD refers to Round-Robin Database, the concept of which is described as a fixed number of records in the database, that when the last record has been written, the next update goes to the first record, and so on. In this way, databases will never grow out of control.

The RRD concept was adopted by Tobi Oetiker, author of MRTG (Multi Router Traffic Grapher), when it developed the RRDTool. The RRDTool contains a single tool which provides all the functions to create databases as well as modify, tune, and update them, generate graphs, and handle time series data such as network bandwidth, CPU load, temperature, etc. These data are stored in files with the .rrd file extension. Since they are contained in a round-robin database, their system storage footprint remains constant all the time.

The RRDTool is called with the "create" argument in order to create a file with the .rrd file extension. It also contains two arguments, DS and RRA, which specify the time at which the database starts. DS, meaning Data Sources, specifies the DST or Data Source Type from any of Counter, Gauge, Derive, or even Absolute. RRA for Round Robin Archives, are like views by which data are stored. Within the file that has the .rrd file extension, every RRA is actually stored separately along with predefined number of records. Every time the file with the .rrd file extension is updated, a PDP (Primary Data Point) is added and combined with RRA to determine the actual value.

Files with the .rrd file extension can also be created with the use of the RRD::Simple, which provides a simple interface to the RRD module. This module, which is part of the RRDTool, is ideal for quick and simple creation of files with the .rrd file extension based on the Round Robin Archive (RRA) definitions. The module can also dynamically add new data source names to an existing file with the .rrd file extension.

A typical file with the .rrd file extension contains configuration files used by the RRD Measurement Archive divided into two sections: a Metadata section which describes the interface, each section of which has a unique metadata and subject identifiers and a Data section which references to the Metadata section using the metadataIdRef value.

Author: Tobias Oetiker
Author URL:
Related Applications: RRDtool
Common Path: N/A


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What Causes .RRD files Errors to Occur?

.RRD files errors are possibly critical Windows file errors and are often brought on by a damaged registry that should be repaired immediately to prevent further failure in other applications and/or hardware. Experiencing these errors places your personal computer at risk for fatal crashes, blue screen errors and even system device failure.

.RRD files Errors - Common Symptoms:

.RRD files errors bring forth many symptoms, including: system locks on start up or shut down, applications halt, diminished computer speed, built-in speaker beeping, problems saving documents, sluggish behaviour and application installation trouble.

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