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[Veritas-bu] Error Reading Header Block
2003-02-13 15:16:56
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=20
I am having tons of media problems. We have 30 Seagate LTO Ultrium 1 =
drives
shared by four media servers between two L700 Tape Libraries. The bptm =
logs complain about
not being able to read the header block. The drives are running at the =
latest (1460) firmware
level and all the tapes (and drives) are new. The /var/adm/messages =
file complains about
tape error recovery retrying and even sometimes failures. I can't seem =
to find any pattern where
it points to a drive or a particular tape.
=20
Some History:
- A couple of weeks ago (right about the time we started seeing issues) =
we had two drives replaced
with the same Firmware level, but with a higher hardware level. We =
downed those drives until we
know for sure that this isn't our problem.
=20
- A Veritas consultant actually recommended that we use 512 for the =
NUMBER_DATA_BUFFERS
and 524288 for SIZE_DATA_BUFFERS. We had tons of problems with our =
vault sessions failing
so I opened a support call to Veritas. They recommended that I change =
the NUMBER_DATA_BUFFERS
to 256 and the SIZE_DATA_BUFFERS to 262144. After this change, my vault =
sessions were
100% successful until all these media problems began.
=20
We are running in a SAN and SSO, Solaris 8 Platform, Netbackup =
Datacenter 4.5 MP2. Any help
would be great appreciated.
=20
=20
Gina Robinson
=20
Systems Administrator
Off: (310)813-4202
Pg: (310)389-8550
Email: <mailto:gina.robinson AT trw DOT com> gina.robinson AT trw DOT com
=20
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<BODY bgColor=3D#ffffff>
<DIV><SPAN class=3D169064322-12022003><FONT face=3DVerdana =
color=3D#000080=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D169064322-12022003><FONT face=3DVerdana =
color=3D#000080 size=3D2>I am=20
having tons of media problems. We have 30 Seagate LTO Ultrium 1=20
drives</FONT></SPAN></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>shared by four media servers between two L700 =
Tape=20
Libraries. The bptm logs complain =
about</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>not being able to read the header =
block. The=20
drives are running at the latest (1460)=20
firmware</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>level and all the tapes (and drives) are=20
new. The /var/adm/messages file complains=20
about</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>tape error recovery retrying and even =
sometimes=20
failures. I can't seem to find any pattern=20
where</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>it points to a drive or a particular=20
tape.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003><U><EM>Some=20
History:</EM></U></SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>- A couple of weeks ago (right about =
the time we=20
started seeing issues) we had two drives=20
replaced</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>with the same Firmware level, but with a =
higher=20
hardware level. We downed those drives until=20
we</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>know for sure that this isn't our=20
problem.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>- A Veritas consultant actually recommended =
that we use=20
512 for the NUMBER_DATA_BUFFERS</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>and 524288 for SIZE_DATA_BUFFERS. We =
had tons of=20
problems with our vault sessions =
failing</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>so I opened a support call to Veritas. =20
They recommended that I change the =
</SPAN></FONT></FONT></FONT><FONT=20
face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>NUMBER_DATA_BUFFERS</SPAN></FONT></FONT></FONT=
></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>to 256 </SPAN></FONT></FONT></FONT><FONT=20
face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN =
class=3D169064322-12022003>and=20
the SIZE_DATA_BUFFERS to 262144. After this change,=20
</SPAN></FONT></FONT></FONT><FONT face=3DVerdana><FONT size=3D2><FONT=20
color=3D#000080><SPAN class=3D169064322-12022003>my vault sessions=20
were</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>100% </SPAN></FONT></FONT></FONT><FONT=20
face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>successful until all these media problems=20
began.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>We are running in a SAN and SSO, Solaris 8 =
Platform,=20
Netbackup Datacenter 4.5 MP2. Any =
help</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DVerdana><FONT size=3D2><FONT color=3D#000080><SPAN=20
class=3D169064322-12022003>would be great=20
appreciated.</SPAN></FONT></FONT></FONT></DIV>
<DIV><SPAN class=3D169064322-12022003><FONT face=3DVerdana =
color=3D#000080=20
size=3D2></FONT></SPAN> </DIV>
<DIV> </DIV>
<P>
<DIV><FONT face=3DVerdana size=3D2><EM>Gina Robinson</DIV></FONT></EM>
<P></P>
<P><IMG height=3D41 src=3D"cid:169064322@12022003-34b4" width=3D227>=20
<DIV><FONT size=3D1>Systems Administrator</FONT><FONT =
size=3D1></DIV></FONT>
<DIV><FONT size=3D1>Off: (310)813-4202</DIV></FONT>
<DIV><FONT size=3D1>Pg: (310)389-8550</DIV></FONT>
<DIV>
<DIV><FONT size=3D1>Email: </FONT><A =
href=3D"mailto:gina.robinson AT trw DOT com"><FONT=20
size=3D1>gina.robinson AT trw DOT com</FONT></A></DIV></DIV>
<P></P>
<DIV> </DIV></BODY></HTML>
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