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    Don't forget about tape backups. Was any of the data covered by the
    DUA backed up to tape? How do you deal with that? <br>
    <pre class="moz-signature" cols="72">Prentice</pre>
    <div class="moz-cite-prefix">On 9/29/21 10:49 AM, Paul Edmon via
      Beowulf wrote:<br>
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      <p>Yeah, that's what we were surmising.  But paranoia and
        compliance being what it is we were curious what others were
        doing.</p>
      <p>-Paul Edmon-<br>
      </p>
      <div class="moz-cite-prefix">On 9/29/2021 10:32 AM, Renfro,
        Michael wrote:<br>
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          <p class="MsoNormal">I have to wonder if the intent of the DUA
            is to keep physical media from winding up in the wrong
            hands. If so, if the servers hosting the parallel filesystem
            (or a normal single file server) is physically secured in a
            data center, and the drives are destroyed on
            decommissioning, that might satisfy the requirements.<o:p></o:p></p>
          <p class="MsoNormal"><o:p> </o:p></p>
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            <p class="MsoNormal" style="margin-bottom:12.0pt"><b><span
                  style="font-size:12.0pt;color:black">From: </span></b><span
                style="font-size:12.0pt;color:black">Beowulf <a
                  class="moz-txt-link-rfc2396E"
                  href="mailto:beowulf-bounces@beowulf.org"
                  moz-do-not-send="true"><beowulf-bounces@beowulf.org></a>
                on behalf of Paul Edmon via Beowulf <a
                  class="moz-txt-link-rfc2396E"
                  href="mailto:beowulf@beowulf.org"
                  moz-do-not-send="true"><beowulf@beowulf.org></a><br>
                <b>Date: </b>Wednesday, September 29, 2021 at 9:15 AM<br>
                <b>To: </b>Scott Atchley <a
                  class="moz-txt-link-rfc2396E"
                  href="mailto:e.scott.atchley@gmail.com"
                  moz-do-not-send="true"><e.scott.atchley@gmail.com></a><br>
                <b>Cc: </b>Beowulf Mailing List <a
                  class="moz-txt-link-rfc2396E"
                  href="mailto:beowulf@beowulf.org"
                  moz-do-not-send="true"><beowulf@beowulf.org></a><br>
                <b>Subject: </b>Re: [Beowulf] Data Destruction<o:p></o:p></span></p>
          </div>
          <p style="margin:0in;text-align:center;background:white"
            align="center"><b><span
                style="font-size:12.0pt;color:red;background:white">External
                Email Warning</span></b><o:p></o:p></p>
          <p
style="mso-margin-top-alt:0in;margin-right:12.0pt;margin-bottom:0in;margin-left:12.0pt;text-align:center;background:white"
            align="center"> <b><span style="font-size:12.0pt;color:red">This
                email originated from outside the university. Please use
                caution when opening attachments, clicking links, or
                responding to requests.</span></b><o:p></o:p></p>
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            <p>The former.  We are curious how to selectively delete
              data from a parallel filesystem.  For example we commonly
              use Lustre, ceph, and Isilon in our environment.  That
              said if other types allow for easier destruction of
              selective data we would be interested in hearing about it.<o:p></o:p></p>
            <p>-Paul Edmon-<o:p></o:p></p>
            <div>
              <p class="MsoNormal">On 9/29/2021 10:06 AM, Scott Atchley
                wrote:<o:p></o:p></p>
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                <p class="MsoNormal">Are you asking about selectively
                  deleting data from a parallel file system (PFS) or
                  destroying drives after removal from the system either
                  due to failure or system decommissioning? <o:p></o:p></p>
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                  <p class="MsoNormal"><o:p> </o:p></p>
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                  <p class="MsoNormal">For the latter, DOE does not
                    allow us to send any non-volatile media offsite once
                    it has had user data on it. When we are done
                    with drives, we have a very big shredder.<o:p></o:p></p>
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              <p class="MsoNormal"><o:p> </o:p></p>
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                  <p class="MsoNormal">On Wed, Sep 29, 2021 at 9:59 AM
                    Paul Edmon via Beowulf <<a
                      href="mailto:beowulf@beowulf.org"
                      moz-do-not-send="true">beowulf@beowulf.org</a>>
                    wrote:<o:p></o:p></p>
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                  <p class="MsoNormal">Occassionally we get DUA (Data
                    Use Agreement) requests for sensitive <br>
                    data that require data destruction (e.g. NIST
                    800-88). We've been <br>
                    struggling with how to handle this in an era of
                    distributed filesystems <br>
                    and disks.  We were curious how other people handle
                    requests like this?  <br>
                    What types of filesystems to people generally use
                    for this and how do <br>
                    people ensure destruction?  Do these types of DUA's
                    preclude certain <br>
                    storage technologies from consideration or are there
                    creative ways to <br>
                    comply using more common scalable filesystems?<br>
                    <br>
                    Thanks in advance for the info.<br>
                    <br>
                    -Paul Edmon-<br>
                    <br>
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