Veritas-bu

[Veritas-bu] backup speed

2006-03-20 16:42:55
Subject: [Veritas-bu] backup speed
From: RMajor AT vericenter DOT com (Major, Rusty)
Date: Mon, 20 Mar 2006 15:42:55 -0600
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I think you have your MRTG set with the default settings for 10/100
NICs. 100Mbits / 8bits =3D 12.5Mbytes/s.
=20
-Rusty

________________________________

From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of
andrew.x.smith AT jpmchase DOT com
Sent: Monday, March 20, 2006 7:52 AM
To: Atif Munir; veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] backup speed



BTW, I think your maths is a bit wrong:=20

1.7TB of data it takes about 9 hours=20

((1782579.2Mb/9)/60)/60 =3D 55Mbytes a second =3D 440Mbits a second. =
This
isn't bad.....  Maybe ur MRTG is somehow limited to showing 100Mb as its
maximum value????=20





        "Atif Munir" <atif76 AT gmail DOT com>=20

20/03/2006 11:53=20


       =20
        To:        "andrew.x.smith AT jpmchase DOT com"
<andrew.x.smith AT jpmchase DOT com>=20
        cc:        =20
        Subject:        Re: [Veritas-bu] backup speed



I am getting 100Mbits per sec.=20
I have only one client connect to the gigabit switch. and to backup
1.7TB of data it takes about 9 hours. either i use 3 drives or 4.

My mrtg graphs shows that I could not use more than 100Mbits per sec.
I am using rman netbackup so the option of "Allow multiple data stream
is not highlighted but i am using 4 channels to backup data.

I have no idea where i can see NBU buffer size.

Regards,
atif

On 3/20/06, andrew.x.smith AT jpmchase DOT com
<mailto:andrew.x.smith AT jpmchase DOT com>  <andrew.x.smith AT jpmchase DOT com
<mailto:andrew.x.smith AT jpmchase DOT com> > wrote:=20

Hi Atif,=20

 Do you mean 100Mbytes or 100Mbits a second? Maximum theoretical through
put of 1000baseT is 1000/8=3D125MBytes a second so 100MBytes would be =
very
good, in contrast if you are getting only 100Mbits then that is failry
poor - in this instance please post some additional information about
your config as this is a very complex issue. Ie are the clients also
connected on gigabit ethernet, how many clients are there, what are your
multiplexing settings, what are your NBU buffer settings, etc, etc, etc=20

               cheers Andy.=20




        "Atif Munir" <atif76 AT gmail DOT com <mailto:atif76 AT gmail DOT com> 
>=20
Sent by: veritas-bu-admin AT mailman.eng.auburn DOT edu
<mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu> =20

20/03/2006 10:57=20

       =20
       To:        veritas-bu AT mailman.eng.auburn DOT edu
<mailto:veritas-bu AT mailman.eng.auburn DOT edu> =20
        cc:        =20

       Subject:        [Veritas-bu] backup speed




I have a gigabit ethernet. Recently i have installed 5 LTO Gen 3
drives. But I am not getting a very good speed. As a total I am
getting 100Mb/sec, and it take a lot of time to finish my backup.

Why I could not get a good speed.

Regards,
atif

_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
<mailto:Veritas-bu AT mailman.eng.auburn DOT edu>=20
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
<http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu>=20






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<BODY>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D726093721-20032006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>I think you have your MRTG set with the default =
settings=20
for 10/100 NICs. 100Mbits / 8bits =3D 12.5Mbytes/s.</FONT></SPAN></DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D726093721-20032006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2></FONT></SPAN>&nbsp;</DIV>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D726093721-20032006><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>-Rusty</FONT></SPAN></DIV><BR>
<DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft>
<HR tabIndex=3D-1>
<FONT face=3DTahoma size=3D2><B>From:</B> =
veritas-bu-admin AT mailman.eng.auburn DOT edu=20
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] <B>On Behalf Of=20
</B>andrew.x.smith AT jpmchase DOT com<BR><B>Sent:</B> Monday, March 20, 2006 =
7:52=20
AM<BR><B>To:</B> Atif Munir;=20
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> Re: [Veritas-bu] =
backup=20
speed<BR></FONT><BR></DIV>
<DIV></DIV><BR><FONT face=3Dsans-serif size=3D2>BTW, I think your maths =
is a bit=20
wrong:</FONT> <BR><BR><FONT face=3D"Times New Roman" size=3D3>1.7TB of =
data it takes=20
about 9 hours</FONT> <BR><BR><FONT face=3Dsans-serif=20
size=3D2>((1782579.2Mb/9)/60)/60 =3D 55Mbytes a second =3D 440Mbits a =
second. This=20
isn't bad..... &nbsp;Maybe ur MRTG is somehow limited to showing 100Mb =
as its=20
maximum value????</FONT> <BR><BR><BR><BR><BR>
<TABLE width=3D"100%">
  <TBODY>
  <TR vAlign=3Dtop>
    <TD>
    <TD><FONT face=3Dsans-serif size=3D1><B>"Atif Munir"=20
      &lt;atif76 AT gmail DOT com&gt;</B></FONT>=20
      <P><FONT face=3Dsans-serif size=3D1>20/03/2006 11:53</FONT> =
<BR></P>
    <TD><FONT face=3DArial size=3D1>&nbsp; &nbsp; &nbsp; &nbsp; =
</FONT><BR><FONT=20
      face=3Dsans-serif size=3D1>&nbsp; &nbsp; &nbsp; &nbsp; To: &nbsp; =
&nbsp;=20
      &nbsp; &nbsp;"andrew.x.smith AT jpmchase DOT com"=20
      &lt;andrew.x.smith AT jpmchase DOT com&gt;</FONT> <BR><FONT =
face=3Dsans-serif=20
      size=3D1>&nbsp; &nbsp; &nbsp; &nbsp; cc: &nbsp; &nbsp; &nbsp; =
&nbsp;</FONT>=20
      <BR><FONT face=3Dsans-serif size=3D1>&nbsp; &nbsp; &nbsp; &nbsp; =
Subject:=20
      &nbsp; &nbsp; &nbsp; &nbsp;Re: [Veritas-bu] backup=20
speed</FONT></TR></TBODY></TABLE><BR><BR><BR><FONT face=3D"Times New =
Roman"=20
size=3D3>I am getting 100Mbits per sec. <BR>I have only one client =
connect to the=20
gigabit switch. and to backup 1.7TB of data it takes about 9 hours. =
either i use=20
3 drives or 4.<BR><BR>My mrtg graphs shows that I could not use more =
than=20
100Mbits per sec.<BR>I am using rman netbackup so the option of "Allow =
multiple=20
data stream is not highlighted but i am using 4 channels to backup=20
data.<BR><BR>I have no idea where i can see NBU buffer=20
size.<BR><BR>Regards,<BR>atif<BR></FONT><BR><FONT face=3D"Times New =
Roman"=20
size=3D3>On 3/20/06, </FONT><A =
href=3D"mailto:andrew.x.smith AT jpmchase DOT com"><FONT=20
face=3D"Times New Roman" color=3Dblue=20
size=3D3><B><U>andrew.x.smith AT jpmchase DOT com</U></B></FONT></A><FONT=20
face=3D"Times New Roman" size=3D3> &lt;</FONT><A=20
href=3D"mailto:andrew.x.smith AT jpmchase DOT com"><FONT face=3D"Times New =
Roman"=20
color=3Dblue size=3D3><U>andrew.x.smith AT jpmchase DOT com =
</U></FONT></A><FONT=20
face=3D"Times New Roman" size=3D3>&gt; wrote:</FONT> <BR><FONT =
face=3Dsans-serif=20
size=3D2><BR>Hi Atif,</FONT><FONT face=3D"Times New Roman" size=3D3> =
<BR></FONT><FONT=20
face=3Dsans-serif size=3D2><BR>&nbsp;Do you mean 100Mbytes or 100Mbits a =
second?=20
Maximum theoretical through put of 1000baseT is 1000/8=3D125MBytes a =
second so=20
100MBytes would be very good, in contrast if you are getting only =
100Mbits then=20
that is failry poor - in this instance please post some additional =
information=20
about your config as this is a very complex issue. Ie are the clients =
also=20
connected on gigabit ethernet, how many clients are there, what are your =

multiplexing settings, what are your NBU buffer settings, etc, etc,=20
etc</FONT><FONT face=3D"Times New Roman" size=3D3> <BR></FONT><FONT =
face=3Dsans-serif=20
size=3D2><BR>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; =
&nbsp;cheers=20
Andy.</FONT><FONT face=3D"Times New Roman" size=3D3> =
<BR><BR><BR><BR></FONT>
<TABLE width=3D"100%">
  <TBODY>
  <TR vAlign=3Dtop>
    <TD width=3D"2%">
    <TD width=3D"49%"><FONT face=3Dsans-serif size=3D1><B>"Atif Munir"=20
      &lt;</B></FONT><A href=3D"mailto:atif76 AT gmail DOT com" =
target=3D_blank><FONT=20
      face=3Dsans-serif color=3Dblue=20
      size=3D1><B><U>atif76 AT gmail DOT com</U></B></FONT></A><FONT =
face=3Dsans-serif=20
      size=3D1><B>&gt;</B></FONT><FONT face=3D"Times New Roman" =
size=3D3> </FONT><FONT=20
      face=3Dsans-serif size=3D1><BR>Sent by: </FONT><A=20
      href=3D"mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu" =
target=3D_blank><FONT=20
      face=3Dsans-serif color=3Dblue=20
      =
size=3D1><U>veritas-bu-admin AT mailman.eng.auburn DOT 
edu</U></FONT></A><FONT=20
      face=3D"Times New Roman" size=3D3> </FONT>
      <P><FONT face=3Dsans-serif size=3D1>20/03/2006 10:57</FONT><FONT=20
      face=3D"Times New Roman" size=3D3> </FONT></P>
    <TD width=3D"47%"><FONT face=3DArial size=3D1>&nbsp; &nbsp; &nbsp; =
&nbsp;=20
      </FONT><FONT face=3Dsans-serif size=3D1><BR>&nbsp; &nbsp; &nbsp; =
&nbsp;To:=20
      &nbsp; &nbsp; &nbsp; &nbsp;</FONT><A=20
      href=3D"mailto:veritas-bu AT mailman.eng.auburn DOT edu" =
target=3D_blank><FONT=20
      face=3Dsans-serif color=3Dblue=20
      size=3D1><U>veritas-bu AT mailman.eng.auburn DOT 
edu</U></FONT></A><FONT=20
      face=3D"Times New Roman" size=3D3> </FONT><BR><FONT =
face=3Dsans-serif=20
      size=3D1>&nbsp; &nbsp; &nbsp; &nbsp; cc: &nbsp; &nbsp; &nbsp;=20
      &nbsp;</FONT><FONT face=3D"Times New Roman" size=3D3> =
</FONT><BR><FONT=20
      face=3Dsans-serif size=3D1><BR>&nbsp; &nbsp; &nbsp; &nbsp;Subject: =
&nbsp;=20
      &nbsp; &nbsp; &nbsp;[Veritas-bu] backup=20
speed</FONT></TR></TBODY></TABLE><BR><FONT face=3D"Times New Roman"=20
size=3D3><BR><BR></FONT><FONT face=3D"Courier New" size=3D2><BR>I have a =
gigabit=20
ethernet. Recently i have installed 5 LTO Gen 3<BR>drives. But I am not =
getting=20
a very good speed. As a total I am<BR>getting 100Mb/sec, and it take a =
lot of=20
time to finish my backup.<BR><BR>Why I could not get a good=20
speed.<BR><BR>Regards,<BR>atif<BR><BR>___________________________________=
____________<BR>Veritas-bu=20
maillist &nbsp;- &nbsp;</FONT><A =
href=3D"mailto:Veritas-bu AT mailman.eng.auburn DOT edu"=20
target=3D_blank><FONT face=3D"Courier New" color=3Dblue=20
size=3D2><U>Veritas-bu AT mailman.eng.auburn DOT edu</U></FONT></A><FONT=20
face=3D"Courier New" color=3Dblue size=3D2><U><BR></U></FONT><A=20
href=3D"http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu"=20
target=3D_blank><FONT face=3D"Courier New" color=3Dblue=20
size=3D2><U>http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu</U>=
</FONT></A><FONT=20
face=3D"Times New Roman" =
size=3D3><BR><BR></FONT><BR><BR><BR></BODY></HTML>

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