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</style><table class="infobox ib-company vcard"><caption class="infobox-title fn org" style="font-size: 125%;">Sequent Computer Systems</caption><tbody><tr><td colspan="2" class="infobox-image ib-company-logo logo"></td></tr><tr><th scope="row" class="infobox-label">Industry</th><td class="infobox-data category">High-end computer hardware</td></tr><tr><th scope="row" class="infobox-label">Founded</th><td class="infobox-data">1983</td></tr><tr><th scope="row" class="infobox-label">Defunct</th><td class="infobox-data">1999</td></tr><tr><th scope="row" class="infobox-label">Fate</th><td class="infobox-data">Acquired</td></tr><tr><th scope="row" class="infobox-label">Successor</th><td class="infobox-data">IBM</td></tr><tr><th scope="row" class="infobox-label">Website</th><td class="infobox-data"><a rel="nofollow" class="external text" href="https://web.archive.org/web/19980203152329/http://www.sequent.com/">sequent.com</a> at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a> (archived 1998-02-03)</td></tr></tbody></table>

<p><b>Sequent Computer Systems, Inc.</b> was a computer company that designed and manufactured <a href="Multiprocessing" title="Multiprocessing">multiprocessing</a> <a href="Computer_system" class="mw-redirect" title="Computer system">computer systems</a>. They were among the pioneers in high-performance <a href="Symmetric_multiprocessing" title="Symmetric multiprocessing">symmetric multiprocessing</a> (SMP) <a href="Open_system_(computing)" title="Open system (computing)">open systems</a>, innovating in both hardware (e.g., <a href="Cache_(computing)" title="Cache (computing)">cache</a> management and <a href="Interrupt" title="Interrupt">interrupt</a> handling) and software (e.g., <a href="Read-copy-update" title="Read-copy-update">read-copy-update</a>).

</p><p>Through a partnership with <a href="Oracle_Corporation" title="Oracle Corporation">Oracle Corporation</a>, Sequent became a dominant high-end <a href="Unix" title="Unix">UNIX</a> platform in the late 1980s and early 1990s. Later they introduced a next-generation high-end platform for UNIX and <a href="Windows_NT" title="Windows NT">Windows NT</a> based on a <a href="Non-uniform_memory_access" title="Non-uniform memory access">non-uniform memory access</a> architecture, NUMA-Q. As hardware prices fell in the late 1990s, and <a href="Intel" title="Intel">Intel</a> shifted their server focus to the <a href="Itanium" title="Itanium">Itanium</a> processor family, Sequent joined the <a href="Project_Monterey" title="Project Monterey">Project Monterey</a> effort in October 1998, which aimed to move a standard Unix to several new platforms.<sup id="cite_ref-CNET_1-0" class="reference"><a href="#cite_note-CNET-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>

</p><p>In July 1999 Sequent agreed to be <a href="Data_Sciences_Ltd" class="mw-redirect" title="Data Sciences Ltd">acquired by IBM</a>.<sup id="cite_ref-nytimes_2-0" class="reference"><a href="#cite_note-nytimes-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> At the time, Sequent's CEO said its technology would "find its way through IBM's entire product field"<sup id="cite_ref-CNET_1-1" class="reference"><a href="#cite_note-CNET-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> and IBM announced it would "both sell Sequent machines, and fold Sequent's technology...into its own servers",<sup id="cite_ref-nytimes_2-1" class="reference"><a href="#cite_note-nytimes-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> but by May 2002 a decline in sales of the models acquired from Sequent, among other reasons, led to the retirement of Sequent-heritage products.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>

</p><p>Vestiges of Sequent's innovations live on in the form of data clustering software from <a href="PolyServe" class="mw-redirect" title="PolyServe">PolyServe</a> (subsequently acquired by HP),<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> various projects within <a href="OSDL" class="mw-redirect" title="OSDL">OSDL</a>, IBM contributions to the <a href="Linux_kernel" title="Linux kernel">Linux kernel</a>, and claims in the <i><a href="SCO_Group%2C_Inc._v._International_Business_Machines_Corp." title="SCO Group, Inc. v. International Business Machines Corp.">SCO v. IBM</a></i> lawsuit.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading2"><h2 id="History">History</h2></div>

<p>Originally named <b>Sequel</b>,<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> Sequent was formed in 1983<sup id="cite_ref-RICM_12-0" class="reference"><a href="#cite_note-RICM-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> when a group of seventeen engineers and executives left <a href="Intel" title="Intel">Intel</a> after the failed <a href="Intel_iAPX_432" title="Intel iAPX 432">iAPX 432</a> "mainframe on a chip" project was cancelled; they were joined by one non-<a href="Intel" title="Intel">Intel</a> employee. They started Sequent to develop a line of SMP computers,<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> then considered one of the up-and-coming fields in computer design.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup>

</p>

<div class="mw-heading mw-heading3"><h3 id="Balance">Balance</h3></div>

<p>Sequent's first computer systems were the Balance 8000 (released in 1984) and Balance 21000 (released in 1986).<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> Both models were based on 10 MHz <a href="National_Semiconductor" title="National Semiconductor">National Semiconductor</a> <a href="NS32000" title="NS32000">NS32032</a> processors, each with a small write-through cache connected to a common memory to form a <a href="Shared_memory_architecture" class="mw-redirect" title="Shared memory architecture">shared memory</a> system. The Balance 8000 supported up to 6 dual-processor boards for a total maximum of 12 processors.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-cs.berkeley.edu_20-0" class="reference"><a href="#cite_note-cs.berkeley.edu-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> The Balance 21000 supported up to 15 dual-processor boards for a total maximum of 30 processors.<sup id="cite_ref-cs.berkeley.edu_20-1" class="reference"><a href="#cite_note-cs.berkeley.edu-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-unixreview198604_sequent_21-0" class="reference"><a href="#cite_note-unixreview198604_sequent-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup>

</p><p>The systems ran a modified version of <a href="Berkeley_Software_Distribution" title="Berkeley Software Distribution">4.2BSD</a> <a href="Unix" title="Unix">Unix</a> the company called <a href="DYNIX" title="DYNIX">DYNIX</a>, for DYNamic unIX. The machines were designed to compete with the <a href="Digital_Equipment_Corporation" title="Digital Equipment Corporation">DEC</a> <a href="VAX-11/780" class="mw-redirect" title="VAX-11/780">VAX-11/780</a>, with all of their inexpensive processors available to run any process. In addition the system included a series of libraries that could be used by programmers to develop applications that could use more than one processor at a time.

</p>

<div class="mw-heading mw-heading3"><h3 id="Symmetry">Symmetry</h3></div>

<p>Their next series was the <a href="Intel_80386" class="mw-redirect" title="Intel 80386">Intel 80386</a>-based Symmetry, released in 1987. Various models supported between 2 and 30 processors, using a new <a href="Write-back_cache" class="mw-redirect" title="Write-back cache">copy-back cache</a> and a wider <a href="64-bit" class="mw-redirect" title="64-bit">64-bit</a> <a href="Front_side_bus" class="mw-redirect" title="Front side bus">memory bus</a>. 1991's Symmetry 2000 models added multiple <a href="SCSI" title="SCSI">SCSI</a> boards, and were offered in versions with from one to six <a href="Intel_80486" class="mw-redirect" title="Intel 80486">Intel 80486</a> processors. The next year they added the <a href="VMEbus" title="VMEbus">VMEbus</a> based Symmetry 2000/x50 with faster CPUs.

</p>

<p>The late 1980s and early 1990s saw big changes on the software side for Sequent. DYNIX was replaced by DYNIX/ptx, which was based on a merger of <a href="AT%26T_Corporation" title="AT&T Corporation">AT&T Corporation</a>'s <a href="UNIX_System_V" title="UNIX System V">UNIX System V</a> and <a href="Berkeley_Software_Distribution" title="Berkeley Software Distribution">4.2BSD</a>. And this was during a period when Sequent's high-end systems became particularly successful due to a close working relationship with <a href="Oracle_Corporation" title="Oracle Corporation">Oracle</a>, specifically <a href="Oracle_database" class="mw-redirect" title="Oracle database">their high-end database servers</a>. In 1993 they added the Symmetry 2000/x90 along with their ptx/Cluster software, which added various <a href="High-availability_cluster" title="High-availability cluster">high availability</a> features and introduced custom support for Oracle Parallel Server.

</p><p>In 1994 Sequent introduced the Symmetry 5000 series models SE20, SE60 and SE90, which used 66 MHz <a href="Pentium_(original)" title="Pentium (original)">Pentium</a> CPUs in systems from 2 to 30 processors.<sup id="cite_ref-RICM_12-1" class="reference"><a href="#cite_note-RICM-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> The next year they expanded that with the SE30/70/100 lineup using 100 MHz Pentiums,<sup id="cite_ref-RICM_12-2" class="reference"><a href="#cite_note-RICM-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> and then in 1996 with the SE40/80/120 with 166 MHz Pentiums. A variant of the Symmetry 5000, the WinServer 5000 series, ran <a href="Windows_NT" title="Windows NT">Windows NT</a> instead of DYNIX/ptx.<sup id="cite_ref-winserver_22-0" class="reference"><a href="#cite_note-winserver-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup>

</p>

<p>Recognizing the increase in competition for SMP systems after having been early adopters of the architecture, and the increasing integration of SMP technology into microprocessors, Sequent sought its next source of differentiation. They began investing in the development of a system based on a cache-coherent non-uniform memory architecture (<a href="CcNUMA" class="mw-redirect" title="CcNUMA">ccNUMA</a>) and leveraging <a href="Scalable_Coherent_Interconnect" class="mw-redirect" title="Scalable Coherent Interconnect">Scalable Coherent Interconnect</a>. NUMA distributes memory among the processors, avoiding the <a href="https://en.wiktionary.org/wiki/bottleneck" class="extiw external" title="wikt:bottleneck">bottleneck</a> that occurs with a single monolithic memory. Using NUMA would allow their multiprocessor machines to generally outperform SMP systems, at least when the tasks can be executed close to their memory — as is the case for <a href="Server_(computing)" title="Server (computing)">servers</a>, where tasks typically do not share large amounts of data.

</p><p>In 1996 they released the first of a new series of machines based on this new architecture. Known internally as STiNG, an <a href="Abbreviation" title="Abbreviation">abbreviation</a> for <i>Sequent: The Next Generation (with Intel inside)</i>, it was productized as NUMA-Q<sup id="cite_ref-NUMA.q_23-0" class="reference"><a href="#cite_note-NUMA.q-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> and was the last of the systems released before the company was purchased by IBM for over $800 million.

</p><p>IBM then started <a href="Project_Monterey" title="Project Monterey">Project Monterey</a> with <a href="Santa_Cruz_Operation" title="Santa Cruz Operation">Santa Cruz Operation</a>, intending to produce a NUMA-capable standardized <a href="Unix" title="Unix">Unix</a> running on <a href="IA-32" title="IA-32">IA-32</a>, <a href="IA-64" title="IA-64">IA-64</a> and <a href="IBM_Power_microprocessors" title="IBM Power microprocessors">POWER</a> and <a href="PowerPC" title="PowerPC">PowerPC</a> platforms. This project later fell through as both IBM and SCO turned to the <a href="Linux" title="Linux">Linux</a> market, but is the basis for "the new SCO"'s <i><a href="SCO_v._IBM" class="mw-redirect" title="SCO v. IBM">SCO v. IBM</a></i> Linux lawsuit.

</p>

<div class="mw-heading mw-heading3"><h3 id="IBM_purchase_and_disappearance">IBM purchase and disappearance</h3></div>

<p>With their future product strategy in tatters, it appeared Sequent had little future standing alone, and was purchased by IBM in 1999 for $810 million.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> IBM released several x86 servers with a NUMA architecture. The first was the x440 in August, 2002 with a follow-on x445 in 2003. In 2004, an Itanium-based x455 was added to the NUMA family. During this period, NUMA technology became the basis for IBM's <a href="IBM_System_x" class="mw-redirect" title="IBM System x">extended X-Architecture</a> (eXA, which could also stand for enterprise X-Architecture). As of 2011, this chipset is now on its fifth generation, known as eX5 technology.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> It now falls under the brand <a href="IBM_System_x" class="mw-redirect" title="IBM System x">IBM System x</a>.

</p><p>According to a May 30, 2002 article in the <i><a href="Wall_Street_Journal" class="mw-redirect" title="Wall Street Journal">Wall Street Journal</a></i> (WSJ) entitled "Sequent Deal Serves Hard Lesson for IBM":

</p>

<dl><dd>When IBM bought Sequent, ...it [Sequent] lacked the size and resources to compete with <a href="Sun_Microsystems" title="Sun Microsystems">Sun</a> and <a href="Hewlett-Packard" title="Hewlett-Packard">Hewlett-Packard Co.</a> in the Unix server market....</dd>

<dd>In 1999, IBM had problems of its own with an aged and high-priced line of <a href="Server_(computing)" title="Server (computing)">servers</a>, particularly for its version of Unix known as <a href="AIX_operating_system" class="mw-redirect" title="AIX operating system">AIX</a>. It also faced huge losses in <a href="Personal_computer" title="Personal computer">personal computers</a> and declining sales in its cash-cow <a href="Mainframe_computer" title="Mainframe computer">mainframe line</a>.</dd></dl>

<div class="mw-heading mw-heading2"><h2 id="Detailed_model_descriptions">Detailed model descriptions</h2></div>

<p>The following is a more detailed description<sup id="cite_ref-27" class="reference"><a href="#cite_note-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> of the first two generations of Symmetry products, released between 1987 and 1990.

</p>

<div class="mw-heading mw-heading3"><h3 id="Symmetry_S-series">Symmetry S-series</h3></div>

<dl><dt>Symmetry S3</dt>

<dd>The S3 was the low-end platform based on commodity PC components running a fully compatible version of DYNIX 3. It featured a single 33 <a href="Megahertz" class="mw-redirect" title="Megahertz">MHz</a> <a href="Intel_80386" class="mw-redirect" title="Intel 80386">Intel 80386</a> processor, up to 40 <a href="Megabyte" title="Megabyte">megabytes</a> of RAM, up to 1.8 <a href="Gigabyte" title="Gigabyte">gigabytes</a> of <a href="SCSI" title="SCSI">SCSI</a>-based disk storage, and up to 32 direct-connected <a href="Serial_port" title="Serial port">serial ports</a>.<sup id="cite_ref-28" class="reference"><a href="#cite_note-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup></dd></dl>

<dl><dt>Symmetry S16</dt>

<dd>The S16 was the entry-level multiprocessing model, which ran DYNIX/ptx. It featured up to six 20 MHz Intel 80386 processors, each with a 128 <a href="Kilobyte" title="Kilobyte">kilobyte</a> <a href="CPU_cache" title="CPU cache">cache</a>. It also supported up to 80 MB of RAM, up to 2.5 GB of SCSI-based disk storage, and up to 80 direct-connected serial ports.</dd></dl>

<dl><dt>Symmetry S27</dt>

<dd>The S27 ran either DYNIX/ptx or DYNIX 3. It featured up to ten 20 MHz Intel 80386 processors, each with a 128 KB cache. It also supported up to 128 MB of RAM, up to 12.5 GB of disk storage, and up to 144 direct-connected serial ports.<sup id="cite_ref-S27.81_29-0" class="reference"><a href="#cite_note-S27.81-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup></dd></dl>

<dl><dt>Symmetry S81</dt>

<dd>The S81 ran either DYNIX/ptx or DYNIX 3. It featured up to 30 20 MHz Intel 80386 processors, each with a 128 KB cache. It also supported up to 384 MB of RAM, up to 84.8 GB of disk storage, and up to 256 direct-connected serial ports.<sup id="cite_ref-S27.81_29-1" class="reference"><a href="#cite_note-S27.81-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup></dd></dl>

<div class="mw-heading mw-heading3"><h3 id="Symmetry_2000_series">Symmetry 2000 series</h3></div>

<dl><dt>Symmetry 2000/40</dt>

<dd>The S2000/40 was the low-end platform based on commodity PC components running a fully compatible version of DYNIX/ptx. It featured a single 33 <a href="Megahertz" class="mw-redirect" title="Megahertz">MHz</a> <a href="Intel_80486" class="mw-redirect" title="Intel 80486">Intel 80486</a> processor, up to 64 <a href="Megabyte" title="Megabyte">megabytes</a> of RAM, up to 2.4 <a href="Gigabyte" title="Gigabyte">gigabytes</a> of <a href="SCSI" title="SCSI">SCSI</a>-based disk storage, and up to 32 direct-connected <a href="Serial_port" title="Serial port">serial ports</a>.</dd></dl>

<dl><dt>Symmetry 2000/200</dt>

<dd>The S2000/200 was the entry-level multiprocessing model, which ran DYNIX/ptx. It featured up to six 25 MHz Intel 80486 processors, each with a 512 <a href="Kilobyte" title="Kilobyte">kilobyte</a> <a href="CPU_cache" title="CPU cache">cache</a>. It also supported up to 128 MB of RAM, up to 2.5 GB of SCSI-based disk storage, and up to 80 direct-connected serial ports.</dd></dl>

<dl><dt>Symmetry 2000/400</dt>

<dd>The S2000/400 ran either DYNIX/ptx or DYNIX 3. It featured up to ten 25 MHz Intel 80486 processors, each with a 512 KB cache. It also supported up to 128 MB of RAM, up to 14.0 GB of disk storage, and up to 144 direct-connected serial ports.</dd></dl>

<dl><dt>Symmetry 2000/700</dt>

<dd>The S2000/700 ran either DYNIX/ptx or DYNIX 3. It featured up to 30 25 MHz Intel 80486 processors, each with a 512 KB cache. It also supported up to 384 MB of RAM, up to 85.4 GB of disk storage, and up to 256 direct-connected serial ports.</dd></dl>

<ul><li><a href="NCR_Voyager" title="NCR Voyager">NCR Voyager</a> (early 486/Pentium SMP systems)</li></ul>

<div class="mw-heading mw-heading2"><h2 id="References">References</h2></div>

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<li id="cite_note-CNET-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-CNET_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-CNET_1-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://news.cnet.com/Sequent+was+overmatched,+CEO+says/2100-1001_3-228478.html">Sequent was overmatched, CEO says</a>, a July 1999 article from <a href="CNET_Networks" class="mw-redirect" title="CNET Networks">CNET Networks</a></span>

</li>

<li id="cite_note-nytimes-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-nytimes_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-nytimes_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://query.nytimes.com/gst/fullpage.html?res=950DE2DB113CF930A25754C0A96F958260">Sequent Computer Systems To Be Acquired by I.B.M.</a>, a July 13, 1999 article from <i><a href="The_New_York_Times" title="The New York Times">The New York Times</a></i></span>

</li>

<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.bizjournals.com/portland/stories/2002/05/20/daily45.html">IBM lays off 250 in Beaverton</a>, a May 2002 article from <i><a href="Portland_Business_Journal" class="mw-redirect" title="Portland Business Journal">Portland Business Journal</a></i>, one of the <a href="American_City_Business_Journals" title="American City Business Journals">American City Business Journals</a></span>

</li>

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</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.theregister.co.uk/2007/02/27/hp_buys_polyserve">"HP pays for PolyServe while IBM and Dell watch"</a>. <i><a href="The_Register" title="The Register">The Register</a></i>. February 27, 2007.</cite></span>

</li>

<li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.infoworld.com/article/2635806/hewlett-packard-to-buy-polyserve.html">"Hewlett-Packard to buy PolyServe"</a>. March 2007.</cite></span>

</li>

<li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.groklaw.net/article.php?story=6">"SCO Falls Downstairs, Hitting its Head on Every Step — Updated: SCOsource is Born"</a>. <i>Groklaw</i>. 17 May 2003<span class="reference-accessdate">. Retrieved <span class="nowrap">27 September</span> 2023</span>.</cite></span>

</li>

<li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.groklaw.net/article.php?story=59">"Oh, That is Why They Are Saying That"</a>. <i>Groklaw</i>. 17 June 2003<span class="reference-accessdate">. Retrieved <span class="nowrap">27 September</span> 2023</span>.</cite></span>

</li>

<li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.groklaw.net/article.php?story=66">"And They Call Linus Careless"</a>. <i>Groklaw</i>. 18 June 2003<span class="reference-accessdate">. Retrieved <span class="nowrap">27 September</span> 2023</span>.</cite></span>

</li>

<li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.groklaw.net/article.php?story=72">"Why Cringley Says SCO Will Lose"</a>. <i>Groklaw</i>. 20 June 2003<span class="reference-accessdate">. Retrieved <span class="nowrap">27 September</span> 2023</span>.</cite></span>

</li>

<li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><cite id="CITEREFAliza_Earnshaw2007" class="citation news cs1">Aliza Earnshaw (28 February 2007). <a rel="nofollow" class="external text" href="http://www.bizjournals.com/portland/stories/2007/02/26/daily23.html">"PolyServe to join HP division"</a>. <i>Portland Business Journal</i><span class="reference-accessdate">. Retrieved <span class="nowrap">27 September</span> 2023</span>.</cite></span>

</li>

<li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.netlib.org/papers/advarch">Advanced Architecture Computers</a> and <a rel="nofollow" class="external text" href="http://www.netlib.org/papers/advarch-post">Part Two</a>, Argonne National Labs, Technical Report No. 57, Jack J. Dongarra and Iain S. Duff</span>

</li>

<li id="cite_note-RICM-12"><span class="mw-cite-backlink">^ <a href="#cite_ref-RICM_12-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-RICM_12-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-RICM_12-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.ricomputermuseum.org/Home/equipment/sequent-5000">"Sequent Symmetry 5000"</a>.</cite></span>

</li>

<li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text">with some of their names included

here <a class="external autonumber external" href="https://en.wikipedia.org/w/index.php?title=Sequent_Computer_Systems&diff=902882568&oldid=896743436">[1]</a></span>

</li>

</li>

<li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.bitsavers.org/pdf/dec/vax/8800/EK-8840H-UG-001_88xx_System_Hardware_Users_Guide_Mar88.pdf">VAX 8820/8830/8840 System Hardware User's Guide</a>: by 1988 the VAX operating system was SMP</span>

</li>

<li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text">was up & coming @ 1077, already came by VMS</span>

</li>

<li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><cite id="CITEREFR._W._HockneyC._R._Jesshope1988" class="citation book cs1">R. W. Hockney; C. R. Jesshope (1988). <i>Parallel Computers 2: Architecture, Programming and Algorithms</i>. Taylor & Francis. p. 46. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>0-85274-811-6</bdi>.</cite></span>

</li>

<li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20160412082437/http://homepages.inf.ed.ac.uk/cgi/rni/comp-arch.pl?Shmem%2Fsb.html%2CShmem%2Fsb-f.html%2CShmem%2Fmenu-seq.html">"Archived copy"</a>. Archived from <a rel="nofollow" class="external text" href="http://homepages.inf.ed.ac.uk/cgi/rni/comp-arch.pl?Shmem%2Fsb.html%2CShmem%2Fsb-f.html%2CShmem%2Fmenu-seq.html">the original</a> on 2016-04-12<span class="reference-accessdate">. Retrieved <span class="nowrap">2022-07-17</span></span>.</cite><span class="cs1-maint citation-comment"><code class="cs1-code">{{cite web}}</code>: CS1 maint: archived copy as title (link)</span></span>

</li>

<li id="cite_note-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-19">^</a></b></span> <span class="reference-text"><cite id="CITEREFFosterKaplan2011" class="citation book cs1">Foster, Richard; Kaplan, Sarah (2011-04-20). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=FJRVm8pDO9cC&q=balance+8000+sequent&pg=PT229"><i>Creative Destruction: Why Companies That Are Built to Last Underperform the Market--And How to Success fully Transform Them</i></a>. Crown. <a href="ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <bdi>9780307779311</bdi>.</cite></span>

</li>

<li id="cite_note-cs.berkeley.edu-20"><span class="mw-cite-backlink">^ <a href="#cite_ref-cs.berkeley.edu_20-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-cs.berkeley.edu_20-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.cs.berkeley.edu/~culler/machines/sequent.ps">Machines. Sequent</a> cs.berkeley.edu</span>

</li>

<li id="cite_note-unixreview198604_sequent-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-unixreview198604_sequent_21-0">^</a></b></span> <span class="reference-text"><cite class="citation magazine cs1"><a rel="nofollow" class="external text" href="https://archive.org/details/sim_unix-review_1986-04_4_4/page/79/mode/1up">"Growth in Balance"</a>. <i>UNIX Review</i>. April 1986. pp. <span class="nowrap">79–</span>80<span class="reference-accessdate">. Retrieved <span class="nowrap">24 June</span> 2022</span>.</cite></span>

</li>

<li id="cite_note-winserver-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-winserver_22-0">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.allbusiness.com/technology/software-services-applications-computer/7126055-1.html">"Sequent Unveils New High-End Systems for Windows NT; Based on Industry-Leading Platform Symmetry Platform"</a>. <i><a href="Business_Wire" title="Business Wire">Business Wire</a></i>. 1995-05-23<span class="reference-accessdate">. Retrieved <span class="nowrap">2009-03-23</span></span>.</cite></span>

</li>

<li id="cite_note-NUMA.q-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-NUMA.q_23-0">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20190623084303/https://www.computerworld.co.nz/article/518203/auckland_university_first_buy_sequent_numa-q_box">"IT news, careers, business technology, reviews"</a>. Archived from <a rel="nofollow" class="external text" href="https://www.computerworld.co.nz/article/518203/auckland_university_first_buy_sequent_numa-q_box">the original</a> on 2019-06-23.</cite></span>

</li>

<li id="cite_note-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-24">^</a></b></span> <span class="reference-text"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.computerworld.com/article/2576139/network-servers/ibm-drops-intel-high-end-server.html">"IBM drops Intel high-end server"</a>. <i>Computerworld</i>. May 13, 2002.</cite></span>

</li>

<li id="cite_note-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-25">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://archive.today/20130125221915/http://www.ibm.com/systems/info/x86servers/ex5/">"IBM eX5 flexible enterprise systems: EX5 systems overview"</a>. <i>www.ibm.com</i>. Archived from <a rel="nofollow" class="external text" href="http://www.ibm.com/systems/info/x86servers/ex5/">the original</a> on 25 January 2013<span class="reference-accessdate">. Retrieved <span class="nowrap">22 May</span> 2022</span>.</cite></span>

</li>

<li id="cite_note-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-26">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.redbooks.ibm.com/Redbooks.nsf/pages/xref?Open">"XREF: System x Reference | IBM Redbooks"</a>.</cite></span>

</li>

<li id="cite_note-27"><span class="mw-cite-backlink"><b><a href="#cite_ref-27">^</a></b></span> <span class="reference-text">Sequent Computer Systems (1991). <i>Symmetry Multiprocessor Architecture Overview</i>. Company publication number 1003-50113-01</span>

</li>

<li id="cite_note-28"><span class="mw-cite-backlink"><b><a href="#cite_ref-28">^</a></b></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.cs.uoregon.edu/research/paraducks/papers/sc93.d/subsubsection3_3_2_3.html">"The Sequent Symmetry"</a>. February 24, 1994.</cite></span>

</li>

<li id="cite_note-S27.81-29"><span class="mw-cite-backlink">^ <a href="#cite_ref-S27.81_29-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-S27.81_29-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://people.eecs.berkeley.edu/~culler/machines/sequent2.ps">"Sequent Symmetry S27 and Symmetry S81 Parallel Bus Architecture"</a>.</cite></span>

</li>

</ol></div>

<div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2></div>

<ul><li><a rel="nofollow" class="external text" href="https://web.archive.org/web/19980203152329/http://www.sequent.com/">Official website</a> at the <a href="Wayback_Machine" title="Wayback Machine">Wayback Machine</a> (archived 1998-02-03)</li></ul>

<p><span class="noviewer" typeof="mw:File"></span> Media related to <a href="https://commons.wikimedia.org/wiki/Category:Sequent_Computer_Systems" class="extiw external" title="commons:Category:Sequent Computer Systems">Sequent Computer Systems</a> at Wikimedia Commons

</p>

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</style><div id="Large_companies_formerly_based_in_Oregon178" style="font-size:114%;margin:0 4em">Large companies formerly based in <a href="Oregon" title="Oregon">Oregon</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div>Peak annual revenues of $100 million or more</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Moved out of state</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Georgia-Pacific" title="Georgia-Pacific">Georgia-Pacific</a></li>

<li><a href="Electric_Lightwave" title="Electric Lightwave">Integra Telecom</a> (2014)</li>

<li><a href="Louisiana-Pacific" title="Louisiana-Pacific">Louisiana-Pacific</a></li>

<li><a href="Banfield_Pet_Hospital" title="Banfield Pet Hospital">Banfield</a></li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Acquired by <br>out-of-state entities</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Camera_World" title="Camera World">Camera World</a> (2002)</li>

<li><a href="Cascade_Microtech" title="Cascade Microtech">Cascade Microtech</a> (2016)</li>

<li><a href="Electro_Scientific_Industries" title="Electro Scientific Industries">Electro Scientific Industries</a> (2019)</li>

<li><a href="Fred_Meyer" title="Fred Meyer">Fred Meyer</a></li>

<li><a href="Freightliner_Trucks" title="Freightliner Trucks">Freightliner</a></li>

<li><a href="Harry_%26_David" title="Harry & David">Harry & David</a> (2014)</li>

<li><a href="LaCrosse_Footwear" title="LaCrosse Footwear">LaCrosse Footwear</a> (2012)</li>

<li><a href="Les_Schwab_Tire_Centers" title="Les Schwab Tire Centers">Les Schwab</a> (2020)</li>

<li><a href="MathStar" title="MathStar">MathStar</a> (2010)</li>

<li><a href="McCormick_%26_Schmick's" title="McCormick & Schmick's">McCormick & Schmick's</a> (2012)</li>

<li><a href="Meier_%26_Frank" title="Meier & Frank">Meier & Frank</a></li>

<li><a href="Mentor_Graphics" title="Mentor Graphics">Mentor Graphics</a> (2017)</li>

<li><a href="Merix_Corporation" title="Merix Corporation">Merix</a> (2010)</li>

<li><a href="Oregon_Steel_Mills" class="mw-redirect" title="Oregon Steel Mills">Oregon Steel Mills</a></li>

<li><a href="Planar_Systems" title="Planar Systems">Planar Systems</a> (2015)</li>

<li><a href="Sawyer's" title="Sawyer's">Sawyer's</a> (1966)</li>

<li><a href="StanCorp_Financial_Group" title="StanCorp Financial Group">StanCorp Financial</a> (2016)</li>

<li><a href="Tektronix" title="Tektronix">Tektronix</a> (2007)</li>

<li><a href="U.S._Bancorp" title="U.S. Bancorp">U.S. Bancorp</a></li>

<li><a href="West_Coast_Bancorp" title="West Coast Bancorp">West Coast Bank</a> (2012)</li>

<li><a href="Willamette_Industries" title="Willamette Industries">Willamette Industries</a> (2002)</li></ul>

</div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Defunct or <br>out of business</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em">

<ul><li><a href="Consolidated_Freightways" title="Consolidated Freightways">Consolidated Freightways</a> (2002)</li>

<li><a href="Emporium_(department_store_chain)" class="mw-redirect" title="Emporium (department store chain)">Emporium</a> (2003)</li>

<li><a href="Evergreen_International_Aviation" title="Evergreen International Aviation">Evergreen International Aviation</a></li>

<li><a href="Floating_Point_Systems" title="Floating Point Systems">Floating Point Systems</a></li>

<li><a href="Hollywood_Video" title="Hollywood Video">Hollywood Video</a> (2010)</li>

<li><a href="Sprouse-Reitz" title="Sprouse-Reitz">Sprouse-Reitz</a> (1994)</li>

<li><a href="White_Stag_(clothing)" title="White Stag (clothing)">White Stag Manufacturing</a></li></ul>

</div></td></tr></tbody></table></div>

<div class="navbox-styles"></div><div role="navigation" class="navbox authority-control" aria-labelledby="Authority_control_databases_frameless&#124;text-top&#124;10px&#124;alt=Edit_this_at_Wikidata&#124;link=https&#58;//www.wikidata.org/wiki/Q7452493#identifiers&#124;class=noprint&#124;Edit_this_at_Wikidata501" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="Authority_control_databases_frameless&#124;text-top&#124;10px&#124;alt=Edit_this_at_Wikidata&#124;link=https&#58;//www.wikidata.org/wiki/Q7452493#identifiers&#124;class=noprint&#124;Edit_this_at_Wikidata501" style="font-size:114%;margin:0 4em">Authority control databases </div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">International</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://viaf.org/viaf/132207822">VIAF</a></span></li></ul></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">National</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"><ul><li><span class="uid"><a rel="nofollow" class="external text" href="https://id.loc.gov/authorities/no2002022761">United States</a></span></li></ul></div></td></tr></tbody></table></div></div><div><div class="zim-footer">

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