The <a href="https://en.wikipedia.org/wiki/IBM_305_RAMAC" id="mw6g" rel="mw:WikiLink" title="IBM 305 RAMAC">IBM 305 RAMAC</a> is introduced, the first commercial computer to use <a href="https://en.wikipedia.org/wiki/Disk_storage" id="mw6w" rel="mw:WikiLink" title="Disk storage">disk storage</a>.<sup about="#mwt23" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-2"}}' id="cite_ref-2" rel="dc:references" typeof="mw:Extension/ref"><a href="./September_13#cite_note-2" id="mw7A" style="counter-reset: mw-Ref 2;"><span class="mw-reflink-text" id="mw7Q">[2]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-2"><cite about="#mwt20" class="citation web cs1" id="mwB4M"><a class="external text" href="https://www-03.ibm.com/ibm/history/exhibits/650/650_pr2.html" id="mwB4Q" rel="mw:ExtLink nofollow">"IBM Archives: 650 RAMAC announcement press release"</a>. 23 January 2003.</cite><span about="#mwt20" class="Z3988" id="mwB4U" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=unknown&amp;rft.btitle=IBM+Archives%3A+650+RAMAC+announcement+press+release&amp;rft.date=2003-01-23&amp;rft_id=https%3A%2F%2Fwww-03.ibm.com%2Fibm%2Fhistory%2Fexhibits%2F650%2F650_pr2.html&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3ASeptember+13"></span> </span>