The Create data disc test is available in its classic version on the Benchmark tab and as an advanced version on the Create Disc tab. You can use the classic test to analyze the read speed and the rotational speed. You can use the advanced test to also measure the buffer level and the CPU usage caused by the optical drive.
The classic test is run on the Benchmark tab, where the result is also displayed. The graph shows the curve for the write speed in this case, and the rotational speed of the disc on request.
The classic test is run in accordance with the settings you defined in the options under the Transfer Rate navigation entry (see ).
| Rotational speed |
Discs can be read and/or burned in different ways. As a general rule, the reading process in optical drives starts at the radius of the disc and moves from the center outwards. The two standards used to define the types of rotational speed are linear velocity and angular velocity. With constant angular velocity, the tracks at the center of the disc always travel at the slowest linear velocity. The linear velocity increases as you move away from the center towards the outer edge. Angular velocity (also called rotational speed) describes the change in the rotation angle over time independently of the radius of the disc, i.e. the velocity at which an object loops a sector.
Previously selected binary data is written to a blank disc until the maximum disc capacity is reached. The number of files written differs according to the disc type, since a DVD holds significantly more data than a CD.
See also
| Write Speed |
The write speed indicates the speed at which a drive can write data to the optical storage medium, e.g. 8x or 16x speed.
| Rotational speed |
Discs can be read and/or burned in different ways. As a general rule, the reading process in optical drives starts at the radius of the disc and moves from the center outwards. The two standards used to define the types of rotational speed are linear velocity and angular velocity. With constant angular velocity, the tracks at the center of the disc always travel at the slowest linear velocity. The linear velocity increases as you move away from the center towards the outer edge. Angular velocity (also called rotational speed) describes the change in the rotation angle over time independently of the radius of the disc, i.e. the velocity at which an object loops a sector.
| Buffer |
A buffer refers to temporary memory that records and delivers data that cannot be processed immediately as required. The buffer also allows for continuous data flow.
| CPU usage |
The central processing unit processes a computer’s processes. The higher the computing performance, the higher the load of the CPU and its performance.
| Disc type |
Disc type refers to different optical storage media with different specifications. The best known are CD’s and DVD’s that can be written to once or multiple times, and which are manufactured with different storage capacities.
| Rotational speed |
Discs can be read and/or burned in different ways. As a general rule, the reading process in optical drives starts at the radius of the disc and moves from the center outwards. The two standards used to define the types of rotational speed are linear velocity and angular velocity. With constant angular velocity, the tracks at the center of the disc always travel at the slowest linear velocity. The linear velocity increases as you move away from the center towards the outer edge. Angular velocity (also called rotational speed) describes the change in the rotation angle over time independently of the radius of the disc, i.e. the velocity at which an object loops a sector.