mbuffer: mbuffer (a tool for buffering data streams)
mbuffer:
mbuffer: mbuffer has a large set of unique features:
mbuffer:   - direct support for TCP based network targets (IPv4 and IPv6)
mbuffer:   - ability to send to multiple targets in parallel
mbuffer:   - support for multiple volumes
mbuffer:   - I/O rate limitation
mbuffer:   - high/low watermark based restart criteria
mbuffer:   - configurable buffer size
mbuffer:   - on the fly MD5 hash calculation
mbuffer: http://www.maier-komor.de/mbuffer.html