Drive Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961/SM963 512GB hdparm -t /dev/nvme0n1 Timing buffered disk reads: 5516 MB in 3.00 seconds = 1838.62 MB/sec Drive Seagate ST2000LM007-1R8174 2TB hdparm -t /dev/sda Timing buffered disk reads: 392 MB in 3.01 seconds = 130.27 MB/sec