Commands – CentOS Frequent used commands

Test Disk Speed

hdparm –tT /dev/sda

Write Speed - dd if=/dev/zero of=test bs=1048576 count=2048

Read Speed – dd if=test of=/dev/null bs=1048576

Find WWPN

cat /sys/class/scsi_host/host1/device/fc_host:host1/port_name

Hardware Detection

lshw / lspci