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      STATES</strong></font></div>
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      AND EXCHANGE COMMISSION</strong></font></div>
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      DC 20549</strong></font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 16pt; FONT-FAMILY: Times New Roman"><strong>FORM
      8-K</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>CURRENT
      REPORT</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Pursuant
      to Section&#160;13 or 15(d) of the</strong></font></div>
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      Exchange Act of 1934</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date
      of
      Report (Date of earliest event reported): </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>April
      26, 2006 </strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 20pt; FONT-FAMILY: Times New Roman"><strong>RACKABLE
      SYSTEMS, INC.</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Exact
      name of registrant as specified in its charter)</font></div>
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                or other jurisdiction of incorporation)</font></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Commission
                File Number)</font></div>
            </td>
            <td valign="top" width="33%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(I.R.S.
                Employer Identification No.)</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>1933
      Milmont Drive </strong></font></div>
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      of principal executive offices and zip code)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
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      telephone number, including area code: </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>(408)
      240-8300</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
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      the
      appropriate box below if the Form 8-K filing is intended to simultaneously
      satisfy the filing obligation of the registrant under any of the following
      provisions:</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">&#168;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
      Written
      communications pursuant to Rule 425 under the Securities Act (17 CFR
      230.425)</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">&#168;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
      Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">&#168;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">
      Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
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      Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
      Act
      (17 CFR 240.13e-4(c))</font></div>
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    <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
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        <div id="GLFTR" style="WIDTH: 100%" align="left">&#160;</div>
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        <div style="WIDTH: 100%; TEXT-ALIGN: center">&#160;</div>
        <div style="WIDTH: 100%; TEXT-ALIGN: center">
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ITEM&#160;5.02.
      DEPARTURE OF DIRECTORS OR PRINCIPAL OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT
      OF PRINCIPAL OFFICERS. </strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
      April
      26, 2006, Rackable Systems&#8217; Board of Directors appointed Todd Ford to President
      and Madhu Ranganathan to Chief Financial Officer and Principal Finance and
      Accounting Officer. </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Mr.
      Ford
      will continue to report to Tom Barton Rackable Systems&#8217; Chief Executive
      Officer.</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Mr.
      Ford,
      age 39, joined Rackable Systems in December 2002 as Chief Financial Officer
      and
      he became Executive Vice President of Operations in December 2003. From June
      2002 to December 2002, Mr.&#160;Ford provided consulting services to Rackable
      Systems as a consultant at Callero Partners. From June 2000 to March 2002,
      Mr.&#160;Ford served as Chief Financial Officer at Noosh, Inc. a print
      management software company.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Mr.
      Ford
      shall receive an annual base salary of $260,500 and will be eligible to receive
      an annual bonus of up to $100,000 based upon the achievement of specific
      performance targets.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Immediately
      prior to Rackable Systems initial public offering in June 2005, Rackable
      Investments LLC, then Rackable Systems&#8217; largest stockholder, converted all of
      the shares of then outstanding Series A preferred stock and distributed the
      resulting shares to its members. Each share of Series A preferred stock
      converted into one share of Series B preferred stock, which at the closing
      of
      our initial public offering was redeemed for approximately $1.25 in cash, and
      approximately 0.467 shares of common stock. Mr.&#160;Ford, was a member of
      Rackable Investment LLC and owned units in Rackable Investment LLC representing
      283,333 shares of our Series A preferred stock.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Ms.
      Ranganathan, age 41, joined Rackable Systems in December 2005 as Vice President
      of Finance. From August 2002 to November 2005, Ms. Ranganathan served as the
      Vice President and Corporate Controller at Redback Networks a publicly traded
      company providing telecommunication networking equipment. From January 2000
      to
      August 2002, Ms Ranganathan served as Vice President of Finance at Jamcracker,
      Inc. an application services provider. </font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Ms.
      Ranganathan shall receive an annual base salary of $200,000 and will be eligible
      to receive quarterly bonuses of up to $20,000 based upon the achievement of
      specific performance targets.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 72pt; TEXT-INDENT: -36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ITEM&#160;9.01.
      FINANCIAL STATEMENTS AND EXHIBITS. </strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>(d)
      Exhibits. </strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 18pt; TEXT-INDENT: -18pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
      following exhibit is filed herewith: </font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div>
      <table cellpadding="0" cellspacing="0" width="100%">

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            <td align="left" valign="bottom" width="7%" style="border-bottom: black thin solid;">
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Number</strong></font></div>
            </td>
            <td align="left" valign="bottom" width="3%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
            <td align="left" valign="bottom" width="80%" style="border-bottom: black thin solid;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Description</strong></font></div>
            </td>
          </tr>
          <tr>
            <td align="left" valign="top" width="7%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">99.1</font></div>
            </td>
            <td align="left" valign="bottom" width="3%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
            </td>
            <td align="left" valign="bottom" width="80%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Press
                release issued by Rackable Systems, Inc., dated April 26, 2006, announcing
                the promotion of Todd Ford and Madhu
                Ranganathan</font></div>
            </td>
          </tr>

      </table>
    </div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><br></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 36pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
      to the requirements of the Securities Exchange Act of 1934, the registrant
      has
      duly caused this report to be signed on its behalf by the undersigned, thereunto
      duly authorized.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">
      <table align="center" bgcolor="#ffffff" border="0" cellpadding="0" cellspacing="0" width="100%">

          <tr valign="top" bgcolor="#ffffff">
            <td width="50%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="1%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="49%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td colspan="2"><strong><font size="2">Rackable Systems,
              Inc.</font></strong></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">Dated:
              April 28, 2006</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">By:&#160;&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">/s/
              William P. Garvey</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td colspan="2"><font style="FONT-FAMILY: " size="1">&#160;</font></td>
            <td align="left">
              <hr style="COLOR: black" align="left" noshade size="2" width="80%"><font size="2">William
              P. Garvey</font></td>
          </tr>
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            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">General
              Counsel and Vice President, Corporate Development
</font></td>
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      INDEX</strong></font></div>
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                release issued by Rackable Systems, Inc., dated April 26, 2006, announcing
                the promotion of Todd Ford and Madhu
                Ranganathan</font></div>
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{"company-data": {"conformed-name": "Rackable Systems, Inc.", "cik": "0001316625", "assigned-sic": "3571", "irs-number": "320047154", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-51333", "film-number": "06790514"}, "business-address": {"street1": "1933 MILMONT DRIVE", "city": "MILPITAS", "state": "CA", "zip": "95035", "phone": "408-240-8300"}, "mail-address": {"street1": "1933 MILMONT DRIVE", "city": "MILPITAS", "state": "CA", "zip": "95035"}}
UNITED
      STATES
SECURITIES
      AND EXCHANGE COMMISSION
Washington,
      DC 20549
FORM
      8-K
CURRENT
      REPORT
Pursuant
      to Section 13 or 15(d) of the
Securities
      Exchange Act of 1934
Date
      of
      Report (Date of earliest event reported):
April
      26, 2006
RACKABLE
      SYSTEMS, INC.
(Exact
      name of registrant as specified in its charter)
Delaware
000-51333
32-0047154
(State
                or other jurisdiction of incorporation)
(Commission
                File Number)
(I.R.S.
                Employer Identification No.)
1933
      Milmont Drive
Milpitas,
      CA 95035
(Address
      of principal executive offices and zip code)
Registrant's
      telephone number, including area code:
(408)
      240-8300
Check
      the
      appropriate box below if the Form 8-K filing is intended to simultaneously
      satisfy the filing obligation of the registrant under any of the following
      provisions:
¨
Written
      communications pursuant to Rule 425 under the Securities Act (17 CFR
      230.425)
¨
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)
¨
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange
      Act
      (17 CFR 240.14d-2(b))
¨
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange
      Act
      (17 CFR 240.13e-4(c))
ITEM 5.02.
      DEPARTURE OF DIRECTORS OR PRINCIPAL OFFICERS; ELECTION OF DIRECTORS; APPOINTMENT
      OF PRINCIPAL OFFICERS.
On
      April
      26, 2006, Rackable Systems' Board of Directors appointed Todd Ford to President
      and Madhu Ranganathan to Chief Financial Officer and Principal Finance and
      Accounting Officer.
Mr.
      Ford
      will continue to report to Tom Barton Rackable Systems' Chief Executive
      Officer.
Mr.
      Ford,
      age 39, joined Rackable Systems in December 2002 as Chief Financial Officer
      and
      he became Executive Vice President of Operations in December 2003. From June
      2002 to December 2002, Mr. Ford provided consulting services to Rackable
      Systems as a consultant at Callero Partners. From June 2000 to March 2002,
      Mr. Ford served as Chief Financial Officer at Noosh, Inc. a print
      management software company.
Mr.
      Ford
      shall receive an annual base salary of $260,500 and will be eligible to receive
      an annual bonus of up to $100,000 based upon the achievement of specific
      performance targets.
Immediately
      prior to Rackable Systems initial public offering in June 2005, Rackable
      Investments LLC, then Rackable Systems' largest stockholder, converted all of
      the shares of then outstanding Series A preferred stock and distributed the
      resulting shares to its members. Each share of Series A preferred stock
      converted into one share of Series B preferred stock, which at the closing
      of
      our initial public offering was redeemed for approximately $1.25 in cash, and
      approximately 0.467 shares of common stock. Mr. Ford, was a member of
      Rackable Investment LLC and owned units in Rackable Investment LLC representing
      283,333 shares of our Series A preferred stock.
Ms.
      Ranganathan, age 41, joined Rackable Systems in December 2005 as Vice President
      of Finance. From August 2002 to November 2005, Ms. Ranganathan served as the
      Vice President and Corporate Controller at Redback Networks a publicly traded
      company providing telecommunication networking equipment. From January 2000
      to
      August 2002, Ms Ranganathan served as Vice President of Finance at Jamcracker,
      Inc. an application services provider.
Ms.
      Ranganathan shall receive an annual base salary of $200,000 and will be eligible
      to receive quarterly bonuses of up to $20,000 based upon the achievement of
      specific performance targets.
ITEM 9.01.
      FINANCIAL STATEMENTS AND EXHIBITS.
(d)
      Exhibits.
The
      following exhibit is filed herewith:
Exhibit
Number
Description
99.1
Press
                release issued by Rackable Systems, Inc., dated April 26, 2006, announcing
                the promotion of Todd Ford and Madhu
                Ranganathan
SIGNATURE
Pursuant
      to the requirements of the Securities Exchange Act of 1934, the registrant
      has
      duly caused this report to be signed on its behalf by the undersigned, thereunto
      duly authorized.
Rackable Systems,
              Inc.
Dated:
              April 28, 2006
By:
/s/
              William P. Garvey
William
              P. Garvey
General
              Counsel and Vice President, Corporate Development
EXHIBITS
      INDEX
Exhibit
Number
Description
99.1
Press
                release issued by Rackable Systems, Inc., dated April 26, 2006, announcing
                the promotion of Todd Ford and Madhu
                Ranganathan