Up for sale is a used BUFFALO TeraStation TS-RXL 12 TB (4x 3TB) RAID 1U Network Attached Storage NAS. It has been tested and the firmware has been. Solution: I'm not sure what you mean by Discovery tool, could you elaborate? I use a Buffalo TB RXL NAS myself. and it uses the web-portal. We bought an 8TB Buffalo TeraStation TS-RXL a few months back for use as backup/general storage etc Over the past few months I have.