In response to competitive pressures, IBM introduced a memory upgrade option, allowing 96K on a 360/30.<ref>Historical Note: A posted submission to Ed Thelen's 360/30 writings (http://ed-thelen.org/comp-hist/ibm-360-30.html) signed LEONARD. BEARES.ctr (at) disa.mil (December 2005) indicated that, in response to a 128K offering by a small company, IBM actually introduced an upgrade, allowing 96K on a 360/30. BEARES noted that this allowed hour-plus tape/disk-based sorts to be done in-core in minutes.</ref> It seems, based on the system's front panel, that a provision for supporting more than 64K had been pre-planned.<ref>http://www.ljw.me.uk/ibm360/links has an entry named '''Glenn's Computer Museum''' (http://www.glennsmuseum.com/ibm/ibm.html) that has the following annotation: note that this front panel has indicators for extra address bits to allow more than 64k main storage</ref>
