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Try the net buffer size variable, then the how many buffers, there is one
more which increases the tcp packet size... veritas has docs regarding all
these, then there is the policies you create, that is a performance boost
big time... I had a increase with 32 buffers at 1024k or was it K? anyway...
call veritas they have the paper with your answers.
-----Original Message-----
From: veritas-bu-admin AT Eng.Auburn DOT EDU
[mailto:veritas-bu-admin AT Eng.Auburn DOT EDU]On Behalf Of O. Aytug KARALAR
Sent: Friday, February 16, 2001 1:24 AM
To: Veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Netbackup performance on SAN
Hi all,
In a customer we installed Netbackup 3.4 on a SAN environment.There is an
STK L700 Robotic Library. There are 4 drives (STK9840). Netbackup server is
SUN E450(Solaris 7). There is a STK fiberswitch. On our tests, Netbackup
mounts drives very slow(2-3 mins.) and the backup speed is 8-9Mb/s . This is
a terrible speed for SAN environment. Because STK9840 supports max 40mb/s.
The fiber lines and switch supports 70Mb/s. The worse is other backup
softwares like Legato and SCH Reel performs much much better on the same
environment. For example Legato's backup speed is avarage 20Mb/s, SCH Reel's
is 40 Mb/s. Also Reel mount very quick on STK 9840 drives. A backup software
must mount more quick on STK9840 than other DLT drives. But netbackup here
mounts 9840 like it is a DLT drive. Even worse. None wants to buy a
software backuping with the speed of 10 Mb/s on a 50Mb/s speed SAN
environment..Even the other softwares backups at least with the speed of
30Mb/s. There is a big gap on performances. Does anyone have idea for
improving the performance of Netbackup or is it just netbackup performs ?
O. AYTUG KARALAR
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<DIV><SPAN class=3D890195509-16022001><FONT face=3DArial color=3D#0000ff =
size=3D2>Try=20
the net buffer size variable, then the how many buffers, there is one =
more which=20
increases the tcp packet size... veritas has docs regarding all these,=20
then there is the policies you create, that is a =
performance=20
boost big time... I had a increase with 32 buffers at 1024k or was =
it K?=20
anyway... call veritas they have the paper with your=20
answers.</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B>=20
veritas-bu-admin AT Eng.Auburn DOT EDU =
[mailto:veritas-bu-admin AT Eng.Auburn DOT EDU]<B>On=20
Behalf Of </B>O. Aytug KARALAR<BR><B>Sent:</B> Friday, February 16, =
2001 1:24=20
AM<BR><B>To:</B> Veritas-bu AT mailman.eng.auburn DOT
edu<BR><B>Subject:</B>=20
[Veritas-bu] Netbackup performance on SAN<BR><BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Hi all,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>In a customer we installed Netbackup =
3.4 on a SAN=20
environment.There is an STK L700 Robotic Library. There are 4 drives=20
(STK9840). Netbackup server is SUN E450(Solaris 7). There is a STK=20
fiberswitch. On our tests, Netbackup mounts drives very slow(2-3 =
mins.) and=20
the backup speed is 8-9Mb/s . This is a terrible speed for SAN =
environment.=20
Because STK9840 supports max 40mb/s. The fiber lines and switch =
supports=20
70Mb/s. The worse is other backup softwares like Legato and SCH Reel =
performs=20
much much better on the same environment. For example Legato's =
backup=20
speed is avarage 20Mb/s, SCH Reel's is 40 Mb/s. Also Reel mount very =
quick on=20
STK 9840 drives. A backup software must mount more quick on STK9840 =
than other=20
DLT drives. But netbackup here mounts 9840 like it is a DLT drive.=20
Even worse. None wants to buy a software backuping with the =
speed=20
of 10 Mb/s on a 50Mb/s speed SAN environment..Even the other softwares =
backups=20
at least with the speed of 30Mb/s. There is a big gap on performances. =
Does anyone have idea for improving the performance of =
Netbackup or=20
is it just netbackup performs ? </FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>O. AYTUG KARALAR</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial =
size=3D2><BR></FONT> </DIV></BLOCKQUOTE></BODY></HTML>
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