[Veritas-bu] 9940B config in a L700

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Well the st.driver is good..
=20
The patch level is at MP2 on NBU The backup network speed is gigabyt =
and the
backups are full, incr and RMAN.

-----Original Message-----
From: Brochart, Fabrice [mailto:BrochF AT europe.stortek DOT com]
Sent: Wednesday, April 30, 2003 10:15 AM
To: Rosamond, Travis
Cc: 'veritas-bu AT mailman.eng.auburn DOT edu'
Subject: RE: [Veritas-bu] 9940B config in a L700


    Well,
=20
See your st driver (what level of patch) !!
=20
What is your backup ?? network speed, full, incremental ???
=20
Fabrice

-----Message d'origine-----
De : Rosamond, Travis [mailto:trosamond AT uslec DOT com]
Envoy=E9 : mercredi 30 avril 2003 15:32
=C0 : 'Brochart, Fabrice'
Cc : 'Veritas-Bu (E-mail)'
Objet : RE: [Veritas-bu] 9940B config in a L700


Okay I ran the DD test and did in fact see speeds of 69M per sec....
=20
It seems to me that NBU is what is slowing the devices down... On Last
nights backups I still did not see much better than my DLT drives =
except for
one of my dev boxes which was 27...
=20
ANY Thoughts on this is needed because it just DOES NOT make sense to =
me...
=20
-Travis

-----Original Message-----
From: Brochart, Fabrice [mailto:BrochF AT europe.stortek DOT com]
Sent: Wednesday, April 30, 2003 5:06 AM
To: Rosamond, Travis
Cc: 'Veritas-Bu (E-mail)'
Subject: RE: [Veritas-bu] 9940B config in a L700


    Travis,
=20
All your drives are direct connect or via fiber switch ??
=20
It seems that all your NetBackup tuning parameters are good so,did you =
try,
as Paul mentioned it, some trivial tests.
=20
Speed disk test with dd command, and tape tests (even with DLT drive).
=20
Fabrice

-----Message d'origine-----
De : Paul Winkeler [mailto:pwinkeler AT pbnj-solutions DOT com]
Envoy=E9 : mardi 29 avril 2003 21:30
=C0 : 'Rosamond, Travis'
Cc : 'Veritas-Bu (E-mail)'
Objet : RE: [Veritas-bu] 9940B config in a L700


Travis
=20
I'll second what the two other gentlemen already mentioned.  Since you =
don't
say anything about restore operations failing I am assuming you already =
had
the SIZE_DATA_BUFFERS set properly.  The number of buffers is still key
though.
=20
Try this experiment on one of your T9940B drives:
    dd if=3D/dev/zero bs=3D1024k count=3D2048 of=3D/dev/rmt/<num>cbn
and use iostat -xn to monitor the write throughput to the drive.  I =
have
seen speeds of up to 69MByte/sec this way.
=20
By the way what class sun machine are running this on?
=20
 PaulW
=20
www.pbnj-solutions.com <http://www.pbnj-solutions.com/>  IT Solutions =
That
Stick
(216) 533-5708


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<DIV><SPAN class=3D667332614-30042003><FONT face=3D"Times New Roman"=20
color=3D#0000ff>Well the st.driver is good..</FONT></SPAN></DIV>
<DIV><SPAN class=3D667332614-30042003><FONT face=3D"Times New Roman"=20
color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=3D667332614-30042003><FONT face=3D"Times New Roman"=20
color=3D#0000ff>The patch level is at MP2 on NBU The backup network =
speed is=20
gigabyt and the backups are full, incr and RMAN.</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
  <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
  size=3D2>-----Original Message-----<BR><B>From:</B> Brochart, Fabrice =

  [mailto:BrochF AT europe.stortek DOT com]<BR><B>Sent:</B> Wednesday, April =
30, 2003=20
  10:15 AM<BR><B>To:</B> Rosamond, Travis<BR><B>Cc:</B>=20
  'veritas-bu AT mailman.eng.auburn DOT edu'<BR><B>Subject:</B> RE: =
[Veritas-bu] 9940B=20
  config in a L700<BR><BR></FONT></DIV>
  <DIV><SPAN class=3D950041214-30042003><FONT =
size=3D2>&nbsp;&nbsp;&nbsp;=20
  Well,</FONT></SPAN></DIV>
  <DIV><SPAN class=3D950041214-30042003><FONT =
size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D950041214-30042003><FONT size=3D2>See your st =
driver (what=20
  level of patch) !!</FONT></SPAN></DIV>
  <DIV><SPAN class=3D950041214-30042003><FONT =
size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D950041214-30042003><FONT size=3D2>What is your =
backup ??=20
  network speed, full, incremental ???</FONT></SPAN></DIV>
  <DIV><SPAN class=3D950041214-30042003><FONT =
size=3D2></FONT></SPAN>&nbsp;</DIV>
  <DIV><SPAN class=3D950041214-30042003><FONT =
size=3D2>Fabrice</FONT></SPAN></DIV>
  <BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
    <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
    size=3D2>-----Message d'origine-----<BR><B>De&nbsp;:</B> Rosamond, =
Travis=20
    [mailto:trosamond AT uslec DOT com]<BR><B>Envoy=E9&nbsp;:</B> mercredi 30 =
avril 2003=20
    15:32<BR><B>=C0&nbsp;:</B> 'Brochart, Fabrice'<BR><B>Cc&nbsp;:</B> =
'Veritas-Bu=20
    (E-mail)'<BR><B>Objet&nbsp;:</B> RE: [Veritas-bu] 9940B config in a =

    L700<BR><BR></FONT></DIV>
    <DIV><SPAN class=3D701332813-30042003><FONT face=3D"Times New =
Roman"=20
    color=3D#0000ff>Okay I ran the DD test and did in fact see speeds =
of 69M per=20
    sec....</FONT></SPAN></DIV>
    <DIV><SPAN class=3D701332813-30042003><FONT face=3D"Times New =
Roman"=20
    color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
    <DIV><SPAN class=3D701332813-30042003><FONT face=3D"Times New =
Roman"=20
    color=3D#0000ff>It seems to me that NBU is what is slowing the =
devices down...=20
    On Last nights backups I still did not see much better than my DLT =
drives=20
    except for one of my dev boxes which was 27...</FONT></SPAN></DIV>
    <DIV><SPAN class=3D701332813-30042003><FONT face=3D"Times New =
Roman"=20
    color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
    <DIV><SPAN class=3D701332813-30042003><FONT face=3D"Times New =
Roman"=20
    color=3D#0000ff>ANY Thoughts on this is needed because it just DOES =
NOT make=20
    sense to me...</FONT></SPAN></DIV>
    <DIV><SPAN class=3D701332813-30042003><FONT face=3D"Times New =
Roman"=20
    color=3D#0000ff></FONT></SPAN>&nbsp;</DIV>
    <DIV><SPAN class=3D701332813-30042003><FONT face=3D"Times New =
Roman"=20
    color=3D#0000ff>-Travis</FONT></SPAN></DIV>
    <BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
      <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
      size=3D2>-----Original Message-----<BR><B>From:</B> Brochart, =
Fabrice=20
      [mailto:BrochF AT europe.stortek DOT com]<BR><B>Sent:</B> Wednesday, =
April 30,=20
      2003 5:06 AM<BR><B>To:</B> Rosamond, Travis<BR><B>Cc:</B> =
'Veritas-Bu=20
      (E-mail)'<BR><B>Subject:</B> RE: [Veritas-bu] 9940B config in a=20
      L700<BR><BR></FONT></DIV>
      <DIV><SPAN class=3D567093908-30042003><FONT =
size=3D2>&nbsp;&nbsp;&nbsp;=20
      Travis,</FONT></SPAN></DIV>
      <DIV><SPAN class=3D567093908-30042003><FONT=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
      <DIV><SPAN class=3D567093908-30042003><FONT size=3D2>All your =
drives are=20
      direct connect or via fiber switch ??</FONT></SPAN></DIV>
      <DIV><SPAN class=3D567093908-30042003><FONT=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
      <DIV><SPAN class=3D567093908-30042003><FONT size=3D2>It seems =
that all your=20
      NetBackup tuning parameters are good so,did you try, as Paul =
mentioned it,=20
      some trivial tests.</FONT></SPAN></DIV>
      <DIV><SPAN class=3D567093908-30042003><FONT=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
      <DIV><SPAN class=3D567093908-30042003><FONT size=3D2>Speed disk =
test with dd=20
      command, and tape tests (even with DLT =
drive).</FONT></SPAN></DIV>
      <DIV><SPAN class=3D567093908-30042003><FONT=20
size=3D2></FONT></SPAN>&nbsp;</DIV>
      <DIV><SPAN class=3D567093908-30042003><FONT=20
      size=3D2>Fabrice</FONT></SPAN></DIV>
      <BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
        <DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
        size=3D2>-----Message d'origine-----<BR><B>De&nbsp;:</B> Paul =
Winkeler=20
        [mailto:pwinkeler AT pbnj-solutions DOT com]<BR><B>Envoy=E9&nbsp;:</B> =
mardi 29=20
        avril 2003 21:30<BR><B>=C0&nbsp;:</B> 'Rosamond,=20
        Travis'<BR><B>Cc&nbsp;:</B> 'Veritas-Bu =
(E-mail)'<BR><B>Objet&nbsp;:</B>=20
        RE: [Veritas-bu] 9940B config in a L700<BR><BR></FONT></DIV>
        <DIV><SPAN class=3D937152419-29042003><FONT=20
        size=3D2>Travis</FONT></SPAN></DIV>
        <DIV><SPAN class=3D937152419-29042003><FONT=20
        size=3D2></FONT></SPAN>&nbsp;</DIV>
        <DIV><SPAN class=3D937152419-29042003><FONT size=3D2>I'll =
second what the=20
        two other gentlemen already mentioned.&nbsp; Since you don't =
say=20
        anything about restore operations failing I am assuming you =
already had=20
        the <FONT size=3D2>SIZE_DATA_BUFFERS set properly.&nbsp; The =
number of=20
        buffers is still key though.</FONT></FONT></SPAN></DIV>
        <DIV><SPAN class=3D937152419-29042003><FONT=20
        size=3D2></FONT></SPAN>&nbsp;</DIV>
        <DIV><SPAN class=3D937152419-29042003><FONT size=3D2>Try this =
experiment on=20
        one of your T9940B drives:</FONT></SPAN></DIV>
        <DIV><SPAN =
class=3D937152419-29042003>&nbsp;&nbsp;&nbsp;&nbsp;<FONT=20
        size=3D2>dd if=3D/dev/zero bs=3D1024k count=3D2048=20
        of=3D/dev/rmt/&lt;num&gt;cbn</FONT></SPAN></DIV>
        <DIV><SPAN class=3D937152419-29042003><FONT size=3D2>and use =
iostat -xn to=20
        monitor the write throughput to the drive.&nbsp; I have seen =
speeds of=20
        up to 69MByte/sec this way.</FONT></SPAN></DIV>
        <DIV><SPAN class=3D937152419-29042003><FONT=20
        size=3D2></FONT></SPAN>&nbsp;</DIV>
        <DIV><SPAN class=3D937152419-29042003><FONT size=3D2>By the way =
what class=20
        sun machine are running this on?</FONT></SPAN></DIV>
        <DIV><SPAN class=3D937152419-29042003><FONT=20
        size=3D2></FONT></SPAN>&nbsp;</DIV>
        <DIV><SPAN class=3D937152419-29042003><FONT=20
        size=3D2>&nbsp;PaulW</FONT></SPAN></DIV>
        <DIV><FONT size=3D2></FONT>&nbsp;</DIV>
        <DIV align=3Dleft><FONT size=3D2><A=20
        =
href=3D"http://www.pbnj-solutions.com/";>www.pbnj-solutions.com</A> IT=20
        Solutions That Stick</FONT></DIV>
        <DIV align=3Dleft><FONT size=3D2>(216)=20
    =
533-5708</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE=
></BODY></HTML>

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