The BNE25AHE is a BD (Blu-ray Disc) by Sony. The Sony BNE25AHE has a capacity of 25 GB and is a Write-once disc. This means that any data recorded on the BNE25AHE BD cannot be removed. The BNE25AHE can thus store an equivalent amount of data as 5 DVDs. The transfer rate for the BNE25AHE can reach up to 72 MB/s. A very important feature of the BNE25AHE is the Scratch Guard which protects against scratches as well as dust and stains. This is important because the launch of BDs was delayed for this very reason as even minor scratches on the BD can cause data corruption.