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[Veritas-bu] backup speed
2006-03-22 10:04:03
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uncompressed/compressed maximum through put of ur SDLT drives
(manufactuers spec) and ur network speed would be a good start. Beyond
that you get into testing data transfer performance outside of NBU by
testing things like ftp speed etc
Deiter Scott <scottd AT HanoverDirect DOT com>
Sent by: veritas-bu-admin AT mailman.eng.auburn DOT edu
22/03/2006 14:32
To: veritas-bu AT mailman.eng.auburn DOT edu
cc:
Subject: RE: [Veritas-bu] backup speed
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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<br><font size=2 face="sans-serif">uncompressed/compressed maximum through put
of ur SDLT drives (manufactuers spec) and ur network speed would be a good
start. Beyond that you get into testing data transfer performance outside of
NBU by testing things like ftp speed etc</font>
<br>
<br>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td>
<td><font size=1 face="sans-serif"><b>Deiter Scott <scottd AT HanoverDirect
DOT com></b></font>
<br><font size=1 face="sans-serif">Sent by: veritas-bu-admin AT
mailman.eng.auburn DOT edu</font>
<p><font size=1 face="sans-serif">22/03/2006 14:32</font>
<br>
<td><font size=1 face="Arial"> </font>
<br><font size=1 face="sans-serif"> To:
veritas-bu AT mailman.eng.auburn DOT edu</font>
<br><font size=1 face="sans-serif"> cc:
</font>
<br><font size=1 face="sans-serif"> Subject:
RE: [Veritas-bu] backup speed</font></table>
<br>
<br>
<br><font size=2 color=#000080 face="Arial">What config info is necessary to
evaluate our performance?</font>
<br><font size=2 color=#000080 face="Arial"> </font>
<br><font size=2 color=#000080 face="Arial"> </font>
<br><font size=2 face="Tahoma">-----Original Message-----<b><br>
From:</b> andrew.x.smith AT jpmchase DOT com [mailto:andrew.x.smith AT jpmchase
DOT com] <b><br>
Sent:</b> Wednesday, March 22, 2006 9:23 AM<b><br>
To:</b> Deiter Scott<b><br>
Cc:</b> veritas-bu AT mailman.eng.auburn DOT edu<b><br>
Subject:</b> Re: [Veritas-bu] backup speed</font>
<br><font size=3 face="Times New Roman"> </font>
<br><font size=2 face="sans-serif"><br>
Hi Dieter,</font><font size=3 face="Times New Roman"> <br>
</font><font size=2 face="sans-serif"><br>
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,</font><font size=3 face="Times New Roman"> <br>
</font><font size=2 face="sans-serif"><br>
cheers
Andy.</font><font size=3 face="Times New Roman"> <br>
<br>
<br>
</font>
<p>
<table width=100%>
<tr valign=top>
<td width=2%><font size=3 face="Times New Roman"> </font>
<td width=49%><font size=1 face="sans-serif"><b>Deiter Scott <scottd AT
HanoverDirect DOT com></b></font><font size=3 face="Times New Roman">
</font><font size=1 face="sans-serif"><br>
Sent by: veritas-bu-admin AT mailman.eng.auburn DOT edu</font><font size=3
face="Times New Roman"> </font>
<p><font size=1 face="sans-serif">21/03/2006 20:52</font><font size=3
face="Times New Roman"> </font>
<td width=47%><font size=1 face="Arial">
</font><font size=1 face="sans-serif"><br>
To: veritas-bu AT
mailman.eng.auburn DOT edu</font><font size=3 face="Times New Roman">
</font><font size=1 face="sans-serif"><br>
cc: </font><font size=3
face="Times New Roman"> </font><font size=1 face="sans-serif"><br>
Subject: [Veritas-bu]
backup speed</font></table>
<br><font size=3 face="Times New Roman"><br>
<br>
</font><font size=3 color=#000080 face="Times New Roman"><br>
I have been watching this discussion and trying to compare with our
config.</font><font size=3 face="Times New Roman"> </font><font size=2
color=#000080 face="Arial"><br>
Solaris 9 master/media server with a storagetek robot using SDLT
tape.</font><font size=3 face="Times New Roman"> </font><font size=2
color=#000080 face="Arial"><br>
Many assorted windows and unix clients.</font><font size=3 face="Times New
Roman"> </font><font size=2 color=#000080 face="Arial"><br>
All at 5.1 mp 4</font><font size=3 face="Times New Roman"> </font><font size=2
color=#000080 face="Arial"><br>
One particular windows client is a NAS file server. This is backing up
over a gigabit network.</font><font size=3 face="Times New Roman"> </font><font
size=2 color=#000080 face="Arial"><br>
This is approaching 0.5 terabyte and take 23 hours to backup at 4-5 Mb/sec.
Not sure what M stands for!</font><font size=3 face="Times New Roman">
</font><font size=2 color=#000080 face="Arial"><br>
</font><font size=3 face="Times New Roman"> </font><font size=2
color=#000080 face="Arial"><br>
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.</font><font size=3 face="Times New
Roman"> </font><font size=2 color=#000080 face="Arial"><br>
</font><font size=3 face="Times New Roman"> </font><font size=2
color=#000080 face="Arial"><br>
</font><font size=3 face="Times New Roman"> </font>
<br>
<br>
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