สำหรับคำสั่งที่ใช้ทดสอบ
CentOS
hdparm -t /dev/sda

CentOS & FreeBSD
Write Test
dd if=/dev/zero of=/usr/test.bin bs=512 count=4096000
dd if=/dev/zero of=/usr/test2.bin bs=512 count=4096000
Read Test
dd if=/usr/test.bin of=/dev/null

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