Drive ADATA Technology Co., Ltd. XPG GAMMIX S70 BLADE 2TB hdparm -t /dev/nvme0n1 Timing buffered disk reads: 17150 MB in 3.00 seconds = 5715.78 MB/sec Drive Western Digital Technologies, Inc. My Passport (WD40NMZW) 4TB hdparm -t /dev/sda Timing buffered disk reads: 254 MB in 3.03 seconds = 83.96 MB/sec Drive SanDisk Corp. SanDisk 3.2Gen1 123GB hdparm -t /dev/sdb Timing buffered disk reads: 470 MB in 3.00 seconds = 156.53 MB/sec