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[Veritas-bu] backups shows begin writing
2004-12-09 10:05:03
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Are your tape drives attached to a SAN with Fibre? or are the Direct SCSI?
I have seen issues very similar to this;
1) If the devices are Fibre Attached make sure you are not using any sort of
SAN Management Tool. Compaq has one, HP has one, Tivoli SAN Manager is a
nother. I think Q-Logic has one as well. These tools send a soft reset on
the Fibre Channel every once and a while that interrupts the backup. The job
tries to recover and before it can it gets hit again. I have had to use a
Fibre Channel Analyser to catch this in some cases.
2) Ensure that the Windows Removable Storage Manager is disabled. With
Windows 2000 SP4 and Windows 2003 windows will send a scsi probe on the
SCSI/Fibre bus. This probe determines if a tape drive is loaded and it
attempts to read the label. This is very similar to the auto mount feature
of a CDROM on a windows system. Windows 2003 actually requires a registry
hack to disable this default behaviour, even with RSM disabled.
Both are very common for causing performance issues with a Windows Server.
Job starts out properly and then gets slower, slower and slower...
Just my unreliable 2 cents
-----Original Message-----
System is a windows 2000 environment with 4.5 DC
1 backup server and 18 clients backing up over Gigabit LAN to library
attached to backup server
2 clients ( windows domain controllers) when backing up C:\ & system state
the jobs show begin writing and freeze there until cancelled.
When looking at task manager shows a few bpbkar32 processes, rebooted
resolves the issue but keeps coming back
Any ideas??
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<BODY lang=EN-GB vLink=purple link=blue>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=314195814-09122004>Are
your tape drives attached to a SAN with Fibre? or are the Direct
SCSI?</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=314195814-09122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=314195814-09122004>I
have
seen issues very similar to this;</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=314195814-09122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=314195814-09122004>1) If
the devices are Fibre Attached make sure you are not using any sort of SAN
Management Tool. Compaq has one, HP has one, Tivoli SAN Manager is a nother. I
think Q-Logic has one as well. These tools send a soft reset on the Fibre
Channel every once and a while that interrupts the backup. The job tries to
recover and before it can it gets hit again. I have had to use a Fibre Channel
Analyser to catch this in some cases. </SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=314195814-09122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=314195814-09122004>2)
Ensure that the Windows Removable Storage Manager is disabled. With Windows
2000
SP4 and Windows 2003 windows will send a scsi probe on the SCSI/Fibre bus. This
probe determines if a tape drive is loaded and it attempts to read the label.
This is very similar to the auto mount feature of a CDROM on a windows system.
Windows 2003 actually requires a registry hack to disable this default
behaviour, even with RSM disabled.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=314195814-09122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=314195814-09122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=314195814-09122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=314195814-09122004>Both
are very common for causing performance issues with a Windows Server. Job
starts
out properly and then gets slower, slower and slower...</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=314195814-09122004></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=314195814-09122004>Just
my unreliable 2 cents</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=314195814-09122004></SPAN></FONT> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma size=2>-----Original Message-----<BR></FONT></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">System is a windows 2000
environment with 4.5 DC </SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">1 backup server and 18 clients
backing up over Gigabit LAN to library attached to backup
server</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">2 clients ( windows domain
controllers) when backing up C:\ & system state the jobs show begin
writing and freeze there until cancelled.</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">When looking at task manager
shows
a few bpbkar32 processes, rebooted resolves the issue but keeps coming
back</SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT> </P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Any
ideas??<SPAN class=314195814-09122004><FONT
color=#0000ff> </FONT></SPAN></SPAN></P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=314195814-09122004></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=314195814-09122004></SPAN></SPAN> </P>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><SPAN
class=314195814-09122004> </SPAN></SPAN></P>
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style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"></SPAN></FONT><FONT face=Arial
color=#0000ff size=2><SPAN
style="FONT-SIZE:
12pt"></SPAN></FONT> </P></DIV></BLOCKQUOTE></BODY></HTML>
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