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I ran in to this issue after upgrading windows 2000 Master server to 2000
Server Service Pack 6, this some how changed the device drivers for the
drives,
With the wrong drivers we were constantly getting Media write and read
errors, along with Frozen tapes - I was over cleaning drives and having a
Hard time just getting backups to complete even with ten attempts - Until -
After installing the correct Veritas Drivers from the Veritas Install CD,
under additional products, additional products installation, Netbackup tape
device drivers -
It seemed to help out. Believe it or not Veritas support never mentioned
that when I was constantly getting media write errors or read errors and
frozen tapes.
Installing the drivers is simple, just follow the options then reboot the
server. This can help with all kinds of errors.
Also Very important - The Firmware on the drives is very important, it
should be on the Veritas HCL for those drives. Once the correct firmware is
installed
You would be amazed at the improvement from tape read and write errors and
cleaning messages that used to appear and after upgrading the firmware helps
Get rid of these messages, Also, you should really be careful about over
cleaning the drives, it harms the heads, specially if the errors are just
Driver and Firmware
Related.
Once you have the correct drivers installed, this should clear up a lot of
the error messages, But the critical issue is having the correct firmware
on the drives,
That can be seen from using the DLTSAGE from Quantum.
<http://support.veritas.com/dsl/lists/nbu_device_ddProduct_NETBACKUPDC_prod1
_NBUDC45_vendor_STK.htm>
http://support.veritas.com/dsl/lists/nbu_device_ddProduct_NETBACKUPDC_prod1_
NBUDC45_vendor_STK.htm
Use this to find out the firmware tested - and the DLTsage or STK support to
ensure that the correct Firmware is loaded on the drives. -
The correct firmware for drives causes backups to run smooth and free of
unnecessary errors - that result in over cleaning drives.
<http://support.veritas.com/menu_ddProduct_NETBACKUPDC.htm>
http://support.veritas.com/menu_ddProduct_NETBACKUPDC.htm
Eric Ljungblad
Computer Operator
Copley Information Services
Eric.Ljungblad AT copleypress DOT com <mailto:Eric.Ljungblad AT copleypress DOT
com>
(858) 729-8010
_____
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Cierkowski,
Wayne
Sent: Wednesday, January 05, 2005 9:07 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Media Write Errors, Exit Status 84
I'd like to get some feed back as to everyone's experience concerning Media
write errors. I have 4 sites that are almost identical, Compaq servers,
Compaq HBA's, STK L700's and SDLT320 drives. The only difference between
these sites would be number of processors in the server, amount of memory in
the server and the number of SDLT drives. One site in particular has racked
up over 182 frozen tapes since I implemented the backup solution which is
only 22 months old.
First question, does 182 frozen media in only 22 months seem to be a high
rate? Media is always brand new and either Fuji or Quantum.
STK has been working with us to try to resolve this issue and actually gave
us 120 brand new tapes last week. We pulled out all of our existing tapes
and loaded up the 120 new ones. Over the weekend we had 3 CRC's media write
errors. The percentage seems kind of high.
I'm running NetBackup 4.5 at the MP6 level.
Is this a normal level for CRC's with SDLT?
Is it the technology?
Anyone else out there having similar issues?
We are actually at the point of considering changing technology to LTO
drives and media. We have another small site due for replacement and so far
that seems to be the road we are taking because of the SDLT CRC issue.
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<body lang=3DEN-US link=3Dblue vlink=3Dpurple>
<div class=3DSection1>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
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------------------------------------------------------------------------=
------------------------------------------------------------------------=
---------------------------------------------------------------------</s=
pan></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>I ran in to =
this issue
after upgrading windows 2000 Master server to 2000 Server Service Pack =
6, this
some how changed the device drivers for the drives,</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>With the wrong =
drivers we
were constantly getting Media write and read errors, along with Frozen =
tapes
- I was over cleaning drives and having a </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>Hard time just =
getting
backups to complete even with ten attempts - Until =
-</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'> </span></f=
ont></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dred face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:red'>After installing =
the
correct Veritas Drivers from the Veritas Install CD, under additional =
products,
additional products installation, Netbackup tape device drivers =
-</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>It seemed to =
help
out. Believe it or not Veritas support never mentioned that when =
I was
constantly getting media write errors or read errors and frozen =
tapes.</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>Installing the =
drivers is
simple, just follow the options then reboot the server. =
This can
help with all kinds of errors.</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'> </span></f=
ont></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>Also Very =
important
- The Firmware on the drives is very important, it should be on =
the
Veritas HCL for those drives. Once the correct firmware is =
installed </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>You would be =
amazed at
the improvement from tape read and write errors and cleaning messages =
that used
to appear and after upgrading the firmware helps</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>Get rid of =
these
messages, Also, you should really be careful about over cleaning =
the
drives, it harms the heads, specially if the errors are just =
Driver and
Firmware</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>Related.</span><=
/font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'> </span></f=
ont></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>Once you have =
the correct
drivers installed, this should clear up a lot of the error =
messages, But
the critical issue is having the correct firmware on the =
drives,</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>That can be =
seen from using
the DLTSAGE from Quantum.</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'> </span></f=
ont></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dmaroon
face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;color:maroon'><a
href=3D"http://support.veritas.com/dsl/lists/nbu_device_ddProduct_NETBAC=
KUPDC_prod1_NBUDC45_vendor_STK.htm"><font
color=3Dmaroon><span =
style=3D'color:maroon'>http://support.veritas.com/dsl/lists/nbu_device_d=
dProduct_NETBACKUPDC_prod1_NBUDC45_vendor_STK.htm</span></font></a>
</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'> </span></f=
ont></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>Use this to =
find out the
firmware tested - and the DLTsage or STK support to ensure that the
correct Firmware is loaded on the drives. -</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>The correct =
firmware for
drives causes backups to run smooth and free of unnecessary errors - =
that
result in over cleaning drives.</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'> </span></f=
ont></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dmaroon
face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;color:maroon'><a
href=3D"http://support.veritas.com/menu_ddProduct_NETBACKUPDC.htm";><font=
color=3Dmaroon><span =
style=3D'color:maroon'>http://support.veritas.com/menu_ddProduct_NETBACK=
UPDC.htm</span></font></a></span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'> </span></f=
ont></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
color=3Dnavy face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial;color:navy'>Eric =
Ljungblad</span></font><font
size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:10.0pt;font-family:Arial;
color:navy'> =
=
<br>
Computer Operator <br>
Copley Information Services <br>
<a =
href=3D"mailto:Eric.Ljungblad AT copleypress DOT com">Eric.Ljungblad@copleypres=
s.com</a>
<br>
(858) 729-8010 </span></font></p>
<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>
<hr size=3D2 width=3D"100%" align=3Dcenter>
</span></font></div>
<blockquote style=3D'border:none;border-left:solid blue =
1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt=
'>
<p class=3DMsoNormal =
style=3D'margin-right:0in;margin-bottom:12.0pt;margin-left:
1.0in'><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>Cierkowski, Wayne<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> =
</span></font><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:Tahoma'>Wednesday,
January 05, 2005</span></font><font size=3D2 face=3DTahoma><span =
style=3D'font-size:
10.0pt;font-family:Tahoma'> </span></font><font size=3D2 =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma'>9:07 =
AM</span></font><font size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'><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] =
Media Write
Errors, Exit Status 84</span></font></p>
<div>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>I'd like to get some feed =
back
as to everyone's experience concerning Media write errors. I have 4 =
sites
that are almost identical, Compaq servers, Compaq HBA's, STK L700's
and SDLT320 drives. The only difference between these sites would be =
number of
processors in the server, amount of memory in the server and the number =
of SDLT
drives. One site in particular has racked up over 182 frozen tapes =
since I
implemented the backup solution which is only 22 months old. =
</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>First question, does 182 =
frozen
media in only 22 months seem to be a high rate? Media is always brand =
new and
either </span></font><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Fuji</span></font><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'> or =
Quantum.</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>STK has been working with =
us to try
to resolve this issue and actually gave us 120 brand new tapes last =
week. We
pulled out all of our existing tapes and loaded up the 120 new ones. =
Over the
weekend we had 3 CRC's media write errors. The percentage seems kind of
high. </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>I'm running NetBackup 4.5 =
at
the MP6 level. </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>Is this a normal level for
CRC's with SDLT? </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>Is it the technology? =
</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>Anyone else out there =
having similar
issues? </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'>We are actually at the =
point of
considering changing technology to LTO drives and media. We have =
another small
site due for replacement and so far that seems to be the road we are =
taking
because of the SDLT CRC issue. </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:1.0in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'> </span></font></p>
<p class=3DMsoNormal style=3D'margin-left:81.0pt'><font size=3D3
face=3D"Times New Roman"><span =
style=3D'font-size:12.0pt'> </span></font></p>
</div>
</blockquote>
</div>
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