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<DIV>Hi</DIV>
<DIV>Thanks for the information. Things are getting little clear now.</DIV>
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<DIV><FONT size=2 face=Verdana>Regards</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Verdana><STRONG>Ravi Konila</STRONG></FONT></DIV>
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<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A
title=colin.faber@seagate.com>Colin Faber</A> </DIV>
<DIV><B>Sent:</B> Friday, September 15, 2017 10:41 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>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> </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> </DIV>
<DIV>-cf</DIV>
<DIV> </DIV></DIV>
<DIV class=gmail_extra>
<DIV> </DIV>
<DIV class=gmail_quote>On Fri, Sep 15, 2017 at 10:20 AM, Ravi Konila <SPAN
dir=ltr><<A target=_blank>ravibhatk@gmail.com</A>></SPAN> wrote:<BR>
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style="PADDING-LEFT: 1ex; BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex">
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<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
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<TD class=m_-4080250913922797413xl72
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<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
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align=right><FONT
style="FONT-SIZE: 11pt">129.6</FONT></TD></TR></TBODY></TABLE>
<DIV> </DIV>
<DIV>2. How many MDTs should I create for each file system?</DIV>
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<DIV> </DIV>
<DIV><FONT size=2 face=Verdana>Regards</FONT></DIV><SPAN>
<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>
<DIV> </DIV></SPAN></DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV></DIV>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>
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<DIV> </DIV>
<DIV style="BACKGROUND: #f5f5f5">
<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>
<DIV> </DIV></DIV>
<DIV>
<DIV class=h5>
<DIV
style='FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: "Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; DISPLAY: inline'>
<DIV dir=ltr>Hi,
<DIV class=gmail_extra>
<DIV> </DIV>
<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>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex">
<DIV dir=ltr>
<DIV dir=ltr>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>Hi,</DIV>
<DIV> </DIV>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV dir=ltr>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>I have few queries about Lustre File system as I am building new Lustre
File system for our production use. </DIV>
<DIV> </DIV>
<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>
<DIV> </DIV>
<DIV>Yes</DIV>
<DIV> </DIV>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex">
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<DIV dir=ltr>
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<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<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>
<DIV> </DIV>
<DIV>You will need to partition the storage and assign each storage target to
a different file system name.</DIV>
<DIV> </DIV>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex">
<DIV dir=ltr>
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<DIV dir=ltr>
<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV>3. With single MDT can I have multiple Lustre file
system?</DIV></DIV></DIV></DIV></DIV></DIV></DIV></BLOCKQUOTE>
<DIV> </DIV>
<DIV>No</DIV>
<DIV> </DIV>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex">
<DIV dir=ltr>
<DIV dir=ltr>
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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>
<DIV> </DIV>
<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>
<DIV> </DIV>
<BLOCKQUOTE class=gmail_quote
style="PADDING-LEFT: 1ex; BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex">
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<DIV> </DIV>
<DIV>Any help in this regard would be highly appreciated.</DIV><SPAN
class=m_-4080250913922797413HOEnZb><FONT color=#888888>
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<DIV style="FONT-SIZE: 12pt; FONT-FAMILY: 'Calibri'; COLOR: #000000">
<DIV> </DIV>
<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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