{"id":4624,"date":"2014-11-28T07:58:05","date_gmt":"2014-11-28T07:58:05","guid":{"rendered":"https:\/\/bodhost.com\/kb\/?p=4624"},"modified":"2026-02-26T14:04:31","modified_gmt":"2026-02-26T14:04:31","slug":"debian-know-the-playback-speed-of-a-hard-drive","status":"publish","type":"post","link":"https:\/\/www.bodhost.com\/kb\/debian-know-the-playback-speed-of-a-hard-drive\/","title":{"rendered":"How to Know Playback Speed of a Hard Drive with Debian?"},"content":{"rendered":"\r\n<p>Today, we will see a trick to calculate the playback speed of a hard drive, Linux, and specifically with Debian in this tutorial. For this, we will rely on fdisk to list the hard drives and hdparm for the calculation of performance.<\/p>\r\n\r\n\r\n\r\n<p>First, we are going to see the procedure with hdparm so let\u2019s start by listing the drives on the machine with the following command:<\/p>\r\n\r\n\r\n\r\n<pre class=\"wp-block-preformatted\">fdisk -l | grep \"Disque\"<\/pre>\r\n\r\n\r\n\r\n<p>Note: the presence of two discs: sda and sdb. About md0 and md1 it is software RAID arrays present on the machine.<\/p>\r\n\r\n\r\n\r\n<p>Now to calculate the playback speed we use two options with the command hdparm:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>&#8221; -t &#8221; to calculate the playback speed from the cache<\/li>\r\n\r\n\r\n\r\n<li>&#8221; -T &#8221; to calculate the playback speed direct access to the hard drive<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>Which will give us the following result\u2019 (see examples on the screenshot for sda, sdb and md0).<\/p>\r\n\r\n\r\n\r\n<pre class=\"wp-block-preformatted\">hdparm -t -T \/dev\/sda<\/pre>\r\n\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"523\" height=\"212\" class=\"wp-image-4636\" src=\"https:\/\/bodhost.com\/kb\/wp-content\/uploads\/2014\/11\/hdparm.jpg\" alt=\"hdparm\" srcset=\"https:\/\/www.bodhost.com\/kb\/wp-content\/uploads\/2014\/11\/hdparm.jpg 523w, https:\/\/www.bodhost.com\/kb\/wp-content\/uploads\/2014\/11\/hdparm-300x121.jpg 300w\" sizes=\"auto, (max-width: 523px) 100vw, 523px\" \/><\/figure>\r\n<\/div>\r\n\r\n\r\n\r\n\r\n<p>The line \u201cTiming cached reads: is the result of the option \u201c-t\u201d after the line \u201cTiming buffered disk reads\u201d corresponds to the \u201c-T\u201d. You can see read speeds of around 25568 MB\/s and 1344 MB\/s on each of the two discs, which are actually virtual hard disks, stored on a physical hard drive of 7200 rev\/min.<\/p>\r\n\r\n\r\n\r\n<p>For your information, the tool \u201cdd\u201d is usually preinstalled on Linux that allows performing write tests on the hard disk as well. For example:<\/p>\r\n\r\n\r\n\r\n<pre class=\"wp-block-preformatted\">dd bs=1M count=256 if=\/dev\/zero of=test<\/pre>\r\n\r\n\r\n\r\n<p><strong>Incoming searches related to this subject:<\/strong><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>speed test the hard drive<\/li>\r\n\r\n\r\n\r\n<li>speed external hard drive<\/li>\r\n\r\n\r\n\r\n<li>speed SATA hard drive<\/li>\r\n\r\n\r\n\r\n<li>speed of hard drive measured in<\/li>\r\n\r\n\r\n\r\n<li>write speed of the hard drive<\/li>\r\n\r\n\r\n\r\n<li>hard drive speed rpm<\/li>\r\n<\/ul>\r\n","protected":false},"excerpt":{"rendered":"<p>Today, we will see a trick to calculate the playback speed of a hard drive, Linux, and specifically with Debian in this tutorial. For this, we will rely on fdisk&hellip;<\/p>\n<p><a href=\"https:\/\/www.bodhost.com\/kb\/debian-know-the-playback-speed-of-a-hard-drive\/\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[297],"tags":[614,615],"class_list":["post-4624","post","type-post","status-publish","format-standard","hentry","category-faq","tag-speed-test-hard-drive","tag-write-speed-of-hard-drive"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Know Playback Speed of a Hard Drive with Debian?<\/title>\n<meta name=\"description\" content=\"Today, we will see a trick to calculate the playback speed of a hard drive, Linux, and specifically with Debian in this tutorial.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, 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