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I had the same thing on some Brocade switches. If I am not mistaken the
field engineer had to set the switches to not use the auto-detect. It
was re-targeting the luns which in turn would cause NBU to down the
drive.
=20
________________________________
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Sanders,
Donna
Sent: Tuesday, January 25, 2005 3:18 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] netbackup media servers losing connections to
drives through SNCs
=20
Hi,
I am using Netbackup 4.5 in a Windows2000 environment. There is the
following SSO configuration:
An ADIC Scalar1000 with 24 AIT-3 drives attached to 6 SNCs (storage
network controllers - fibrechannel-to-scsi bridges).
The SNCs are attached to Brocade Silkworm 3800 switches.
The 3 Netbackup media servers are also attached to the Silkworm 3800
switches (using Qlogic HBAs).
=20
The problem I am having is that during a backup, the media servers will
lose connection to some of the drives (you actually get the
plug-and-play message on the server that a device was disconnected).
Sometimes it is just one of the drives on an SNC, and sometimes it is
the whole SNC. We can cycle everything (including the SNCs) and
everything will work ok for a day or two and then the same thing happens
again. It is not limited to a specific media server, drive or SNC.
=20
Has anyone seen this problem before? Any help is greatly appreciated.
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>I had the same thing on some =
Brocade
switches. If I am not mistaken the field engineer had to set the =
switches to
not use the auto-detect. It was re-targeting the luns which in turn =
would cause
NBU to down the drive.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
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face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>
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</span></font></div>
<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'>
veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] <b><span =
style=3D'font-weight:
bold'>On Behalf Of </span></b>Sanders, Donna<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Tuesday, January =
25, 2005
3:18 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b>
veritas-bu AT mailman.eng.auburn DOT edu<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [Veritas-bu] =
netbackup
media servers losing connections to drives through =
SNCs</span></font><o:p></o:p></p>
</div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hi,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> I am using Netbackup 4.5 in a Windows2000
environment. There is the following SSO =
configuration:<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'text-indent:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>An ADIC Scalar1000 with 24 =
AIT-3
drives attached to 6 SNCs (storage network controllers –
fibrechannel-to-scsi bridges).<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'text-indent:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>The SNCs are attached to =
Brocade
Silkworm 3800 switches.<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'text-indent:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>The 3 Netbackup media =
servers are also
attached to the Silkworm 3800 switches (using Qlogic =
HBAs).<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'text-indent:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></fo=
nt></p>
<p class=3DMsoNormal style=3D'text-indent:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>The problem I am having is =
that
during a backup, the media servers will lose connection to some of the =
drives
(you actually get the plug-and-play message on the server that a device =
was
disconnected). Sometimes it is just one of the drives on an SNC, =
and
sometimes it is the whole SNC. We can cycle everything (including =
the
SNCs) and everything will work ok for a day or two and then the same =
thing
happens again. It is not limited to a specific media server, drive =
or
SNC.<o:p></o:p></span></font></p>
<p class=3DMsoNormal style=3D'text-indent:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'><o:p> </o:p></span></fo=
nt></p>
<p class=3DMsoNormal style=3D'text-indent:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>Has anyone seen this =
problem
before? Any help is greatly =
appreciated.<o:p></o:p></span></font></p>
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