Display Hard disk Infomation using hdparm

Hdparm is a free tool for linux to measure sequential disk performance which is primarily used to tune and optimize disk parameters or to set and view hard disk drive hardware parameters. It is working on SATA/ATA/IDE/SAS disk. The command below has been tested on CentOS 6.5 and running on VMware ESXi 4.1 virtual machine.

Install the hdparm :

[root@server ~]# yum install hdparm -y
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
 * Webmin: download.webmin.com
 * base: mirror.upsi.edu.my
 * epel: ftp.cuhk.edu.hk
 * extras: mirror.upsi.edu.my
 * updates: centos.mirror.secureax.com
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package hdparm.x86_64 0:9.43-4.el6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

====================================================================================================
 Package               Arch                  Version                      Repository           Size
====================================================================================================
Installing:
 hdparm                x86_64                9.43-4.el6                   base                 81 k

Transaction Summary
====================================================================================================
Install       1 Package(s)

Total download size: 81 k
Installed size: 150 k
Downloading Packages:
hdparm-9.43-4.el6.x86_64.rpm                                                 |  81 kB     00:00
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing : hdparm-9.43-4.el6.x86_64                                                         1/1
  Verifying  : hdparm-9.43-4.el6.x86_64                                                         1/1

Installed:
  hdparm.x86_64 0:9.43-4.el6

Complete!

To display the configuration of the hard disk :

[root@server ~]# hdparm /dev/sda

/dev/sda:
SG_IO: bad/missing sense data, sb[]:  70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 multcount     =  0 (off)
 readonly      =  0 (off)
 readahead     = 256 (on)
 geometry      = 2871/255/63, sectors = 46137344, start = 0

To check the speed of the hard disk :

[root@server ~]# hdparm -Tt /dev/sda

/dev/sda:
 Timing cached reads:   2024 MB in  2.00 seconds = 1012.10 MB/sec
 Timing buffered disk reads: 534 MB in  3.00 seconds = 177.94 MB/sec

To measure how many MB/s your hard disk (SATA/IDE) can read :

[root@server ~]# hdparm -t --direct /dev/sda

/dev/sda:
 Timing O_DIRECT disk reads: 1122 MB in  3.00 seconds = 373.67 MB/sec

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