[Veritas-bu] Throughput problem any ideas?

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Is nic binding supported?  Why not try that instead.
=20
Best Regards,
Darby Moses
=20

________________________________

From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Hindle,
Greg
Sent: Monday, May 16, 2005 9:41 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Throughput problem any ideas?
Importance: High


Hello all,
We have been having a problem here with our jobs basically hanging.
Failure rate is 50-80%. This came on all of a sudden and we have been
working on it for almost a week now with many people involved. Our
setup: We currently back up over 1200 servers each day. We have 2 data
centers, with a media server at each location and 1 master at one
location. I will call them site 1 and 2. We have all servers at site 1
backing up to site 2 and all servers at site 2 backing up at site 1.
Both sites have 2 L700 tape units with about 30+ drives.  Our media and
master server have 2 gig nics and using round robin IP addressing,
meaning the IP address is not tied to a card rather they bounce back and
forth in order to maximum throughput. We are using ether channel at one
site that has the master.  This setup worked great since Jan of this
year. Then one night it all stopped. Failures rates were 50-80%. The
media servers would connect to the client pc's then no data would pass.
While others servers worked fine. We struggled and look at everything to
find the cause. No changes were done to the Veritas network or the data
network. Veritas would not help us because they said we were in a
unsupported network config. We did send them some logs and they did say
we have packet reordering problem and that was the extent of the help.
So over the weekend we reduced the nics in our master and media server
to 1 and removed 1 IP address as well in order to stabilize the backup
network. It worked to a point, however we have doubled out backup times.
I am sending this here in hopes that others can share their setup. AND
to also ask if anyone has a setup that IS approved by Veritas that has
the ability to get more than a gig throughput on the media and master
servers. We want to understand what is the best way we should have a our
Solaris 8 master and media servers setup according to Veritas.
=20
=20
Greg Hindle
=20



>>> The information contained in this e-mail transmission is privileged
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<BODY>
<DIV dir=3Dltr align=3Dleft><SPAN class=3D129244114-16052005><FONT =
face=3DArial=20
color=3D#0000ff size=3D2>Is nic binding supported?&nbsp; Why not try =
that=20
instead.</FONT></SPAN></DIV>
<DIV>&nbsp;</DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Best Regards,</FONT></DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Darby Moses</FONT></DIV>
<DIV>&nbsp;</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 =
</B>Hindle,=20
Greg<BR><B>Sent:</B> Monday, May 16, 2005 9:41 AM<BR><B>To:</B>=20
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> [Veritas-bu] =
Throughput=20
problem any ideas?<BR><B>Importance:</B> High<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=3D670555212-16052005><FONT face=3DArial size=3D2>Hello=20
all,</FONT></SPAN></DIV>
<DIV><SPAN class=3D670555212-16052005><FONT face=3DArial size=3D2>We =
have been having=20
a problem here with our jobs basically hanging. Failure rate is 50-80%. =
This=20
came on all of a sudden and we have been working on it for almost a week =
now=20
with many people involved.&nbsp;Our setup: We currently back up over =
1200=20
servers each day. We have 2 data centers, with a media server at each =
location=20
and 1 master at one location. I will call them site 1 and 2. We have all =
servers=20
at site 1 backing up to site 2 and all servers at site 2 backing up at =
site 1.=20
Both sites have 2 L700 tape units with about 30+ drives.&nbsp; Our media =
and=20
master server have 2 gig nics and using round robin IP addressing, =
meaning the=20
IP address is not tied to a card rather they bounce back and forth in =
order to=20
maximum throughput. We are using ether channel at one site that has the=20
master.&nbsp; This setup worked great since Jan of this year. Then one =
night it=20
all stopped. Failures rates were 50-80%. The media servers would connect =
to the=20
client pc's then no data would pass.&nbsp; While others servers worked =
fine. We=20
struggled and look at everything to find the cause. No changes were done =
to the=20
Veritas network or the data network. Veritas would not help us because =
they said=20
we were in a unsupported network config. We did send them some logs and =
they did=20
say we have packet reordering problem and that was the extent of the =
help. So=20
over the weekend we reduced the nics in our master and media server to 1 =
and=20
removed 1 IP address as well in order to stabilize the backup network. =
It worked=20
to a point, however we have doubled out backup times. I am sending this =
here in=20
hopes that others can share their setup. AND to also ask if anyone has a =
setup=20
that IS approved by Veritas that has the ability to get more than a gig=20
throughput on the media and master servers. We want to understand what =
is the=20
best way we should have a our Solaris 8 master and media servers setup =
according=20
to Veritas.</FONT></SPAN></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV align=3Dleft><FONT face=3DArial size=3D2>Greg Hindle</FONT><FONT =
face=3DArial=20
size=3D2></FONT></DIV>
<DIV>&nbsp;</DIV><FONT size=3D2><BR><BR><BR>&gt;&gt;&gt; The information =
contained=20
in this e-mail transmission is privileged and/or confidential intended =
solely=20
for the exclusive use of the individual addressee. If you are not the =
intended=20
addressee you are hereby notified that any retention, disclosure or =
other use is=20
strictly prohibited. If you have received this notification in error, =
please=20
immediately contact the sender and delete the =
material.<BR></FONT></BODY></HTML>

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