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ble/wipe-buffersize

A template to define the BLE config.txt with.

Defines the BufferSize configuration value for the BlanccoLUNEraser integration. The value is expressed in Bytes, and will result in Memory allocation of BufferSize * 2.

Blancco LUN Eraser supports a variety of different storage equipment. Depending of the type of storage the amount of I/O sent at one time can affect the performance of the erasure. The user can affect this amount by changing the parameter BufferSize. If the BufferSize parameter is not set the software will try to use the preferred size specified by the hardware and the operating system. Especially in high-end storage systems this size is normally too small to get the optimal erasure performance.

Note that Blancco LUN Eraser requires double the amount of RAM based off of the buffer size. For example, if the buffer size is 512MB, then 1024MB of RAM will be used.

If you want the software to automatically change the buffer depending on the current performance, the configuration should be set to the following:

  • BufferSize = "-1"

The buffer size then changes each minute depending on the current performance. If the same storage is erased over and over again the most efficient is to manually specify a buffer size that is believed to optimize performance. The software will then run the whole operation with the specified buffer size. The buffer size used needs to be divisible by 1024.

Example with 50MB buffer:

  • BufferSize = "52428800"

RackN defines a maximum range of 128 GB (137,438,953,472 bytes) which would consume 256 GB of memory for each erasure operation.

The default value is '0' , which signfies to use the preferred size as specified by the hardware and the operating system.