<div dir="ltr">The number of OST's is typically calculated based on overall OST size (cannot exceed maximum FS limits), and performance. The number you choose to utilize should be based on that, if that means you get the best performance out of your system with fewer OST's which are larger then use that. In any case benchmarking of your hardware should be a first step before deciding layouts.<div><br></div><div>Secondly the number of MDTs required is also based on performance and file limit considerations. A single MDT is required, however multiple MDT's can be utilized on the same file system (via DNE feature) to allow you to horizontally scale your metadata performance, as well as total file system file count capacity.</div><div><br></div><div>-cf</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Sep 15, 2017 at 10:20 AM, Ravi Konila <span dir="ltr"><<a href="mailto:ravibhatk@gmail.com" target="_blank">ravibhatk@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div dir="ltr">
<div style="FONT-SIZE:12pt;FONT-FAMILY:'Calibri';COLOR:#000000">
<div>Hi</div>
<div>Thank you very much for quick response. </div>
<div> </div>
<div>Just a quick questions, some times I do get confused.</div>
<div> </div>
<div>1. If I need 78TB for home and 50TB for scratch, how many OSTs should be
there for each file system in a single DAS (attached to two OSSs (HA).</div>
<div>Presently my OST table is as follows:</div>
<div> </div>
<table style="BORDER-COLLAPSE:collapse;COLOR:#000000" cellspacing="0" cellpadding="0" width="540" border="0">
<colgroup>
<col style="WIDTH:48pt" span="3" width="64">
<col style="WIDTH:84pt" width="112">
<col style="WIDTH:72pt" width="96">
<col style="WIDTH:48pt" width="64">
<col style="WIDTH:57pt" width="76">
</colgroup><tbody>
<tr style="HEIGHT:15pt" height="20">
<td class="m_-4080250913922797413xl66" style="BORDER-TOP:windowtext 1pt solid;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:windowtext 1pt solid;PADDING-RIGHT:1px" height="20" width="64"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl67" style="BORDER-TOP:windowtext 1pt solid;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" width="64"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl67" style="BORDER-TOP:windowtext 1pt solid;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" width="64"><font style="FONT-SIZE:11pt">Total HDD</font></td>
<td class="m_-4080250913922797413xl67" style="BORDER-TOP:windowtext 1pt solid;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" width="112"><font style="FONT-SIZE:11pt">RAID 6 Overhead</font></td>
<td class="m_-4080250913922797413xl67" style="BORDER-TOP:windowtext 1pt solid;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" width="96"><font style="FONT-SIZE:11pt">Available HDD</font></td>
<td class="m_-4080250913922797413xl67" style="BORDER-TOP:windowtext 1pt solid;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" width="64"><font style="FONT-SIZE:11pt">each HDD Capacity (in TB)</font></td>
<td class="m_-4080250913922797413xl68" style="BORDER-TOP:windowtext 1pt solid;BORDER-RIGHT:windowtext 1pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" width="76"><font style="FONT-SIZE:11pt">Total in TB)</font></td></tr>
<tr style="HEIGHT:15pt" height="20">
<td class="m_-4080250913922797413xl69" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:windowtext 1pt solid;PADDING-RIGHT:1px" height="20"><font style="FONT-SIZE:11pt">OST_01</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">20</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">2</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">18</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">1.2</font></td>
<td class="m_-4080250913922797413xl70" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 1pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">21.6</font></td></tr>
<tr style="HEIGHT:15pt" height="20">
<td class="m_-4080250913922797413xl69" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:windowtext 1pt solid;PADDING-RIGHT:1px" height="20"><font style="FONT-SIZE:11pt">OST_02</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">20</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">2</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">18</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">1.2</font></td>
<td class="m_-4080250913922797413xl70" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 1pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">21.6</font></td></tr>
<tr style="HEIGHT:15pt" height="20">
<td class="m_-4080250913922797413xl69" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:windowtext 1pt solid;PADDING-RIGHT:1px" height="20"><font style="FONT-SIZE:11pt">OST_03</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">20</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">2</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">18</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">1.2</font></td>
<td class="m_-4080250913922797413xl70" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 1pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">21.6</font></td></tr>
<tr style="HEIGHT:15pt" height="20">
<td class="m_-4080250913922797413xl69" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:windowtext 1pt solid;PADDING-RIGHT:1px" height="20"><font style="FONT-SIZE:11pt">OST_04</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">20</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">2</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">18</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">1.2</font></td>
<td class="m_-4080250913922797413xl70" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 1pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">21.6</font></td></tr>
<tr style="HEIGHT:15pt" height="20">
<td class="m_-4080250913922797413xl69" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:windowtext 1pt solid;PADDING-RIGHT:1px" height="20"><font style="FONT-SIZE:11pt">OST_05</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">20</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">2</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">18</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">1.2</font></td>
<td class="m_-4080250913922797413xl70" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 1pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">21.6</font></td></tr>
<tr style="HEIGHT:15pt" height="20">
<td class="m_-4080250913922797413xl69" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:windowtext 1pt solid;PADDING-RIGHT:1px" height="20"><font style="FONT-SIZE:11pt">OST_06</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">20</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">2</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">18</font></td>
<td class="m_-4080250913922797413xl65" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">1.2</font></td>
<td class="m_-4080250913922797413xl70" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 1pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 0.5pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">21.6</font></td></tr>
<tr style="HEIGHT:15.75pt" height="21">
<td class="m_-4080250913922797413xl71" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 1pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:windowtext 1pt solid;PADDING-RIGHT:1px" height="21"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl72" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 1pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl72" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 1pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl72" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 1pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl72" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 1pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl72" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 0.5pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 1pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px"><font style="FONT-SIZE:11pt"> </font></td>
<td class="m_-4080250913922797413xl73" style="BORDER-TOP:medium none;BORDER-RIGHT:windowtext 1pt solid;VERTICAL-ALIGN:bottom;BORDER-BOTTOM:windowtext 1pt solid;PADDING-TOP:1px;PADDING-LEFT:1px;BORDER-LEFT:medium none;PADDING-RIGHT:1px" align="right"><font style="FONT-SIZE:11pt">129.6</font></td></tr></tbody></table>
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<div>2. How many MDTs should I create for each file system?</div>
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<div><font size="2" face="Verdana">Regards</font></div><span class="">
<div><font size="2" face="Verdana"></font> </div>
<div><font face="Verdana"><strong>Ravi
Konila</strong></font></div>
<div><font face="Verdana">Sr. Technical Consultant</font></div>
<div><font face="Verdana">MSIL, India</font></div>
<div><font style="COLOR:#a5a5a5"><font face="Verdana">Ph: +91
9901072688</font></font></div>
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<div><b>From:</b> <a title="colin.faber@seagate.com">Colin Faber</a> </div>
<div><b>Sent:</b> Friday, September 15, 2017 8:18 PM</div>
<div><b>To:</b> <a title="ravibhatk@gmail.com">Ravi Konila</a> </div>
<div><b>Cc:</b> <a title="lustre-discuss@lists.lustre.org">Lustre Discuss</a>
</div>
<div><b>Subject:</b> Re: [lustre-discuss] Multiple Lustre
filesystem</div></div></div>
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<div dir="ltr">Hi,
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<div class="gmail_quote">On Fri, Sep 15, 2017 at 6:54 AM, Ravi Konila <span dir="ltr"><<a>ravibhatk@gmail.com</a>></span> wrote:<br>
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<div>Hi,</div>
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<div>I have few queries about Lustre File system as I am building new Lustre
File system for our production use. </div>
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<div>1. Can I create more than one Lustre file system for example, one Lustre
file system for /home and other for /scratch ?<span style="FONT-SIZE:small;FONT-FAMILY:arial,sans-serif;COLOR:rgb(34,34,34)"> </span></div></div></div></div></div></div></div></blockquote>
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<div>Yes</div>
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<div>2. As of now I have created 6 OSTs (total of 128TB storage) under shared
storage which uses two OSSs, how do I allocate that to different Lustre file
system if I can create multiple file
system?</div></div></div></div></div></div></div></blockquote>
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<div>You will need to partition the storage and assign each storage target to a
different file system name.</div>
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<div>3. With single MDT can I have multiple Lustre file
system?</div></div></div></div></div></div></div></blockquote>
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<div>No</div>
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<div>4. Is it better to create multiple MDTs or single MDT would do? (again I
am using single shared storage with 2
MDS/MGS)?</div></div></div></div></div></div></div></blockquote>
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<div>You can have 1 MGS for multiple file systems, but each file system requires
it's own MDT, and each file system can have multiple MDT's via DNE
feature.</div>
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<div>Any help in this regard would be highly appreciated.</div><span class="m_-4080250913922797413HOEnZb"><font color="#888888">
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<div><font size="2" face="Verdana"><strong>Ravi Konila</strong></font></div>
<div><font size="2" face="Verdana">Sr. Technical Consultant</font></div>
<div><font size="2" face="Verdana">MSIL, India</font></div>
<div><font color="#a5a5a5"><font size="2" face="Verdana">Ph: +91
9901072688</font></font></div>
<div> </div></div></div></div></div></div></div></div></div></div></div></div></div></font></span></div></div></div></div></div></div><br>______________________________<wbr>_________________<br>lustre-discuss
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