14年前(2007 年)的笔记本的 HDD 和插在 USB 口的 HDD 移动硬盘的读写速度测试结果

HDD:
$ dd if=/root/tmp.data of=/dev/null bs=1024k
4096+0 records in
4096+0 records out
4294967296 bytes transferred in 190.078495 secs (22595756 bytes/sec)
$ dd if=/dev/random of=/root/tmp.data bs=1024k count=4096
4096+0 records in
4096+0 records out
4294967296 bytes transferred in 200.241032 secs (21448987 bytes/sec)

Read speed: 21.54 Megabyte per second
Write speed: 20.45 Megabyte per second

HDD @ USB:
$ dd if=/dev/random of=/tank/tmp.data bs=1024k count=1024
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 100.581317 secs (10675361 bytes/sec)
$ dd if=/tank/tmp.data of=/dev/null
2097152+0 records in
2097152+0 records out
1073741824 bytes transferred in 43.525504 secs (24669257 bytes/sec)

Read speed: 23.52 Megabyte per second
Write speed: 10.18 Megabyte per second

#dd, #hdd, #usb

HDD read/write speed test result

Disk:
  HGST
  1TB 7200RPM
  5V 800mA
  HDD: 7K1000-1000
  Type TS7SAF100
  SATA 6.0Gb/s

with ORICO TYPE-C USB 3.1 Transparent 2.5 inch Hard Drive Enclosure  [2139C3-R1.1]

$ dd if=/dev/random of=./tmp.data bs=1024k count=65536
65536+0 records in
65536+0 records out
68719476736 bytes transferred in 948.964624 secs (72415214 bytes/sec)

$ dd if=./tmp.data of=/dev/null bs=1024k
65536+0 records in
65536+0 records out
68719476736 bytes transferred in 712.999277 secs (96380851 bytes/sec)

Read speed: 96.380851 Megabyte per second
Write speed: 72.415214 Megabyte per second

#HDD #dd