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<title>Selecting the RAID level by pool capacity</title>

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<h1>Selecting the RAID level by pool capacity</h1>
<table width="352" border="2" cellpadding="5">
  <tr valign=top bgcolor="#C0C0C0">
    <td width="213"><b>If your pool has...</b></td>
    <td width="105"><b>Consider this RAID level...</b></td>
  </tr>

  <tr valign=top>
      <td width="213"> <p>One physical drive. </p>
        <dl>
          <dt><b><img src="images/note.gif" width="15" height="17"></b> Note:</dt>
          <dd>
            <ol>
              <li>This is the only choice if the logical device contains only one physical
                drive.
            </ol>
          </dd>
        </dl></td>
      <td width="105"><a href="craidvol.htm">Simple volume</a></td>
  </tr>
  <tr valign=top>
    <td width="213"> <p>Two or more physical drives. </p>
      <dl>
        <dt><b><img src="images/note.gif" width="15" height="17"></b> Note:</dt>
        <dd>
          <ol>

            <li>You can select RAID level-0 for any logical device.
          </ol>
        </dd>
      </dl></td>
    <td width="105"><a href="craid0.htm">RAID level-0</a></td>
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  <tr valign=top>
    <td width="213">Two physical drives. The default for two physical drives is
      RAID level-1. </td>
    <td width="105"><a href="craid1.htm">RAID level-1</a></td>
  </tr>

  <tr valign=top>
      <td width="213">Three or more physical drives. </td>
      <td width="105"><a href="craid1e.htm">RAID level-1E</a></td>
    </tr>
    <tr valign=top>
      <td width="213">Three or more physical drives.</td>
      <td width="105"><a href="craid5.htm">RAID level-5</a></td>
    </tr>

    <tr valign=top>
      <td width="213">Four or more physical drives.</td>
      <td width="105"><a href="craid5ee.htm">RAID level-5EE</a> </td>
    </tr>
    <tr valign=top>
        <td width="213">Four or more physical drives.</td>
        <td width="105"><a href="craid6.htm">RAID level-6</a> </td>
    </tr>

    <tr valign=top>
      <td width="213">Four or more physical drives.</td>
      <td width="105"><a href="craidx0.htm">RAID level-10 </a> </td>
    </tr>

    <tr valign=top>
      <td width="213">Six or more physical drives.</td>
      <td width="105"><a href="craidx0.htm">RAID level-50 </a> </td>
    </tr>

    <tr valign=top>
	      <td width="213">Eight or more physical drives.</td>
	      <td width="105"><a href="craidx0.htm">RAID level-60 </a> </td>
    </tr>
</table>

<h2>More information</h2>

<ul>
  <li><a href="cselraid.htm">Selecting a RAID level and performance tuning</a></li>
</ul>

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