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I started this thread a while ago and got sidetracked. I am running
NetBackup FP 4.5 on HP-UX 11.i, master server is on an HP L2000, and this
media server is on an HP N4000 with a SureStore 20/700 library using LTO-1
drives. The majority of my backups are coming off split BCV's mounted to
my media server from an EMC unit. After a bit of digging and analysis we
have come to the conclusion that we need to do a bit of tuning. We are only
getting around 3 to 5 mb/sec on backups according to the Activity Monitor
gui. We ran a test outside of NetBackup and pumped around 26 mb/sec
compressed data and 14 mb/sec uncompressed to one of the drives. This kind
of points a finger at NetBackup.
First of all, is there a NetBackup Performance Tuning guide that refers to
NetBackup FP 4.5? All I can find is the one for Version 3.2/3.4.
My biggest fear is that the tuning guide it has statements about possible
restore problems after changes to:
NET_BUFFER_SZ
NUMBER_DATA_BUFFERS
SIZE_DATA_BUFFERS
They only say there may be a problem, well does this mean some of my
restores may work and some may not? I do plan to test restores after any
changes but there is no way to test a restore for everyone of my policies.
The guide also has the following warning:
"NOTE: Restores use the same buffer size that was used to backup the image
being restored." Is this saying that to do any restore I will have to
change the above parameters back to what they were when that backup was
taken or will NB determine the backup size and use that for the restore? We
have been running NetBackup for a while now and I don't want to jeopardize
my ability to do restores when needed.
If anyone has any experience with changing the above, please share what you
know.
Thanks in advance.
Wayne BeDour
IT Unix System Administrator
PH: 313-240-3374 FAX: 313-240-3065
Outlook: wbedo
Internet: wbedour AT lear DOT com
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<DIV><FONT face=Arial size=2><SPAN class=834052517-26082003>I started this
thread a while ago and got sidetracked. <FONT face=Arial color=black
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">I am
running NetBackup FP 4.5 on HP-UX 11.i, master server is on an HP L2000, and
this media server is on an HP N4000 with a SureStore 20/700 library using
LTO-1 drives. The majority of my backups are coming off split
BCV's mounted to my media server from an EMC unit. </SPAN></FONT>After a
bit of digging and analysis we have come to the conclusion that we
need to do a bit of tuning. We are only getting around 3 to 5 mb/sec
on backups according to the Activity Monitor gui. We ran a test outside
of
NetBackup and pumped around 26 mb/sec compressed data and 14 mb/sec
uncompressed
to one of the drives. This kind of points a finger at
NetBackup.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=834052517-26082003>First of all, is
there a NetBackup Performance Tuning guide that refers to NetBackup FP
4.5? All I can find is the one for Version 3.2/3.4.
</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=834052517-26082003>My biggest fear is
that the tuning guide it has statements about possible restore problems after
changes to:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=834052517-26082003>NET_BUFFER_SZ</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=834052517-26082003>NUMBER_DATA_BUFFERS</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=834052517-26082003>SIZE_DATA_BUFFERS</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=834052517-26082003>They only say there
may be a problem, well does this mean some of my restores may work and some may
not? I do plan to test restores after any changes but there is no way to
test a restore for everyone of my policies. The guide also has the
following warning:</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=834052517-26082003>"NOTE: Restores use
the same buffer size that was used to backup the image being restored."
Is
this saying that to do any restore I will have to change the above parameters
back to what they were when that backup was taken or will NB determine the
backup size and use that for the restore? We have been running NetBackup
for a while now and I don't want to jeopardize my ability to do restores when
needed. </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=834052517-26082003>If anyone has any
experience with changing the above, please share what you
know.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=834052517-26082003>Thanks in
advance.</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=834052517-26082003></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2>Wayne BeDour</FONT> <BR><FONT face=Arial size=2>IT
Unix System Administrator</FONT> <BR><FONT face=Arial size=2>PH:
313-240-3374 FAX: 313-240-3065</FONT> <BR><FONT face=Arial
size=2>Outlook: wbedo </FONT><BR><FONT face=Arial
size=2>Internet: wbedour AT lear DOT com</FONT> </DIV><BR>
<DIV> </DIV></BODY></HTML>
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