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    Hi Tibor,<br>
    <br>
    It all depends on if you can risk the chance of downtime. <br>
    Buying a couple larger HDD's is probably cheaper than spending a
    couple of hours of your time on it when things break. You could have
    one node down permanently, replace it completly and heal the volume<br>
(<a class="moz-txt-link-freetext" href="http://gluster.org/community/documentation/index.php/Gluster_3.4:_Brick_Restoration_-_Replace_Crashed_Server">http://gluster.org/community/documentation/index.php/Gluster_3.4:_Brick_Restoration_-_Replace_Crashed_Server</a>)<br>
    <br>
    During this time the cluster is at risk and performance will suffer
    during healing. I think if you use the same data disk healing will
    be quick though.<br>
    <br>
    Kind regards,<br>
    <br>
    Jorick Astrego <br>
    Netbulae B.V.<br>
    <br>
    <div class="moz-cite-prefix">On 08/19/2014 10:09 AM, Punit Dambiwal
      wrote:<br>
    </div>
    <blockquote
cite="mid:CAGZcrBmSd-LyDhaeFeoULySZ6g4oiOomr4ynCgUpc88w1UtARA@mail.gmail.com"
      type="cite">
      <div dir="ltr">Hi Tibor,
        <div><br>
        </div>
        <div>In this if your host OS disk will crash your brick data
          also inaccessible..better to have the RAID1 for OS...</div>
        <div><br>
        </div>
        <div>Thanks,</div>
        <div>Punit&nbsp;</div>
      </div>
      <div class="gmail_extra">
        <br>
        <br>
        <div class="gmail_quote">On Tue, Aug 19, 2014 at 2:29 PM,
          Demeter Tibor <span dir="ltr">&lt;<a moz-do-not-send="true"
              href="mailto:tdemeter@itsmart.hu" target="_blank">tdemeter@itsmart.hu</a>&gt;</span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div>
              <div style="font-family:times new roman,new
                york,times,serif;font-size:12pt;color:#000000">
                <div>Hi,</div>
                <div><br>
                </div>
                <div>I would like to make a four-node gluster based
                  cluster, but I don't have enought hdd. I just
                  wondering, on the hosts (not on the portal) I won't
                  use raid for the main system (os).</div>
                <div>I have disks only for bricks. I will give one disk
                  for the os, and one disk for gluster brick per server.</div>
                <div><br>
                </div>
                <div><span style="font-size:12pt">Is it a good idea?</span></div>
                <div>What will happen if the main system's hdd will
                  break? </div>
                <div>Can I recreate gluster+vdsm host without data loss?
                </div>
                <div>How did I do it?</div>
                <div><br>
                </div>
                <div><br>
                </div>
                <div>Thanks for advance.</div>
                <span class="HOEnZb"><font color="#888888">
                    <div><br>
                    </div>
                    <div>Tibor</div>
                    <div><br>
                    </div>
                  </font></span></div>
            </div>
            <br>
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            <br>
          </blockquote>
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