[Veritas-bu] backup speed

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What config info is necessary to evaluate our performance?

 

 

-----Original Message-----
From: andrew.x.smith AT jpmchase DOT com [mailto:andrew.x.smith AT jpmchase DOT 
com] 
Sent: Wednesday, March 22, 2006 9:23 AM
To: Deiter Scott
Cc: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] backup speed

 


Hi Dieter, 

  When you say "good" I will assume you mean compared to the theoretical
maximum and compared to what other people can achieve. Well firstly you need
to consider what the theoretical maximum is for your hardware, depending on
what type of SDLT you have then u will have a maximum of at least 15MB/sec
uncompressed, your network will be at least 100Mbit so is 12.5MB/sec - and
your actual throughput is (((512*1024)/23)/60)/60 = 6.3MB/sec. So in
conclusion your performance would not appear to be particularly good,
particularly if you are using gigabit Ethernet. There are of course other
factors and I've had to speculate on your config as you didn't post
sufficient detail, 

                cheers Andy. 






 

Deiter Scott <scottd AT HanoverDirect DOT com> 
Sent by: veritas-bu-admin AT mailman.eng.auburn DOT edu 

21/03/2006 20:52 

        
        To:        veritas-bu AT mailman.eng.auburn DOT edu 
        cc:         
        Subject:        [Veritas-bu] backup speed




I have been watching this discussion and trying to compare with our config. 
Solaris 9 master/media server with a storagetek robot using SDLT tape. 
Many assorted windows and unix clients. 
All at 5.1 mp 4 
One particular windows client is a NAS file server.  This is backing up over
a gigabit network. 
This is approaching 0.5 terabyte and take 23 hours to backup at 4-5 Mb/sec.
Not sure what M stands for! 
  
I'm trying to determine if this is good or bad.  We can not test a large ftp
because of the setup on the client. 
  
  


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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>What config info is necessary to evaluate
our performance?</span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>&nbsp;</span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>&nbsp;</span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> andrew.x.smith AT jpmchase 
DOT com
[mailto:andrew.x.smith AT jpmchase DOT com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, March 22, 2006
9:23 AM<br>
<b><span style='font-weight:bold'>To:</span></b> Deiter Scott<br>
<b><span style='font-weight:bold'>Cc:</span></b>
veritas-bu AT mailman.eng.auburn DOT edu<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Veritas-bu] backup
speed</span></font></p>

<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New 
Roman"><span
style='font-size:12.0pt'>&nbsp;</span></font></p>

<p class=MsoNormal style='margin-right:0in;margin-bottom:12.0pt;margin-left:
.5in'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><br>
</span></font><font size=2 face=sans-serif><span style='font-size:10.0pt;
font-family:sans-serif'>Hi Dieter,</span></font> <br>
<br>
<font size=2 face=sans-serif><span 
style='font-size:10.0pt;font-family:sans-serif'>&nbsp;
When you say &quot;good&quot; I will assume you mean compared to the
theoretical maximum and compared to what other people can achieve. Well firstly
you need to consider what the theoretical maximum is for your hardware,
depending on what type of SDLT you have then u will have a maximum of at least
15MB/sec uncompressed, your network will be at least 100Mbit so is 12.5MB/sec -
and your actual throughput is (((512*1024)/23)/60)/60 = 6.3MB/sec. So in
conclusion your performance would not appear to be particularly good, 
particularly
if you are using gigabit Ethernet. There are of course other factors and I've
had to speculate on your config as you didn't post sufficient 
detail,</span></font>
<br>
<br>
<font size=2 face=sans-serif><span 
style='font-size:10.0pt;font-family:sans-serif'>&nbsp;
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; cheers Andy.</span></font> <br>
<br>
<br>
<br>
</p>

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  style='font-size:12.0pt'>&nbsp;</span></font></p>
  </td>
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  <p class=MsoNormal><b><font size=1 face=sans-serif><span style='font-size:
  7.5pt;font-family:sans-serif;font-weight:bold'>Deiter Scott
  &lt;scottd AT HanoverDirect DOT com&gt;</span></font></b> <br>
  <font size=1 face=sans-serif><span 
style='font-size:7.5pt;font-family:sans-serif'>Sent
  by: veritas-bu-admin AT mailman.eng.auburn DOT edu</span></font> </p>
  <p><font size=1 face=sans-serif><span style='font-size:7.5pt;font-family:
  sans-serif'>21/03/2006 20:52</span></font> </p>
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  <p class=MsoNormal><font size=1 face=Arial><span style='font-size:7.5pt;
  font-family:Arial'>&nbsp; &nbsp; &nbsp; &nbsp; </span></font><br>
  <font size=1 face=sans-serif><span 
style='font-size:7.5pt;font-family:sans-serif'>&nbsp;
  &nbsp; &nbsp; &nbsp; To: &nbsp; &nbsp; &nbsp; &nbsp;veritas-bu AT 
mailman.eng.auburn DOT edu</span></font>
  <br>
  <font size=1 face=sans-serif><span 
style='font-size:7.5pt;font-family:sans-serif'>&nbsp;
  &nbsp; &nbsp; &nbsp; cc: &nbsp; &nbsp; &nbsp; &nbsp;</span></font> <br>
  <font size=1 face=sans-serif><span 
style='font-size:7.5pt;font-family:sans-serif'>&nbsp;
  &nbsp; &nbsp; &nbsp; Subject: &nbsp; &nbsp; &nbsp; &nbsp;[Veritas-bu] backup
  speed</span></font></p>
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<p class=MsoNormal style='margin-right:0in;margin-bottom:12.0pt;margin-left:
.5in'><font size=3 face="Times New Roman"><span style='font-size:12.0pt'><br>
<br>
<br>
<font color=navy><span style='color:navy'>I have been watching this discussion
and trying to compare with our config.</span></font> <br>
</span></font><font size=2 color=navy face=Arial><span style='font-size:10.0pt;
font-family:Arial;color:navy'>Solaris 9 master/media server with a storagetek
robot using SDLT tape.</span></font> <br>
<font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>Many assorted windows and unix clients.</span></font> <br>
<font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>All at 5.1 mp 4</span></font> <br>
<font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>One particular windows client is a NAS file server.
&nbsp;This is backing up over a gigabit network.</span></font> <br>
<font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>This is approaching 0.5 terabyte and take 23 hours to backup
at 4-5 Mb/sec. &nbsp;Not sure what M stands for!</span></font> <br>
<font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>&nbsp;</span></font> <br>
<font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>I'm trying to determine if this is good or bad. &nbsp;We can
not test a large ftp because of the setup on the client.</span></font> <br>
<font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>&nbsp;</span></font> <br>
<font size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial;color:navy'>&nbsp;</span></font> </p>

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