Toshiba quoted a transfer rate for the 22TB MG10 of 271MB/s. In our read-throughput test, the drive peaked at 291.66MB/s (4MB block) before dropping back to 273.55MB/s at the end of the test run (16MB block). Writes peaked at 264.52MB/s (8MB block) before finishing the test run at 260.68MB/s.