A hydraulically-operated ripper tool is mounted as an attachment on a hydraulic arm of a carrier or excavator and used in a method for demolition of large metal walled structures such as storage tanks in a very short time. A first hardened bushing includes a first opening and a first perimeter. Each of the sections of the waveguide are coupled with a thin waveguide having a high index of refraction. The selected cache entries and metadata for cache entries that were not selected are migrated from the first storage device to the second storage device. The disclosed method for storing and retrieving the remaining part of the data stream on another storage device uses metadata tags and data buffers to split a data stream seamlessly into chunks while recording it, and distribute the chunks in real-time to different connected storage devices, so that the chunks can be seamlessly concatenated again in real-time for replaying the stream.