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Reference.org
Density (computer storage)
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<p>Density is a measure of the quantity of information <a href="/facts/Bit/S972NSaD">bits</a> that can be stored on a given <a href="/facts/Space/tq6LUM3C">physical space</a> of a <a href="/facts/Computer_storage/wPHKFpdx">computer storage medium</a>. There are three types of density: length (<i>linear density</i>) of <a href="/facts/Hard_disk/kekLSGSE">track</a>, area of the <a href="/facts/Surface_area/WNowzFCw">surface</a> (<i>areal density</i>), or in a given <a href="/facts/Volume/aeAXCBUd">volume</a> (<i>volumetric density</i>). </p><p>Generally, higher density is more desirable, for it allows more data to be stored in the same physical space. Density therefore has a direct relationship to storage capacity of a given medium. Density also generally affects the performance within a particular medium, as well as price. </p>