Veritas-bu

[Veritas-bu] Backup speeds to STK 9940A drives

2002-10-22 13:06:32
Subject: [Veritas-bu] Backup speeds to STK 9940A drives
From: BrochF AT europe.stortek DOT com (Brochart, Fabrice)
Date: Tue, 22 Oct 2002 18:06:32 +0100
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                Hi,

Maybe you can , also, take a look at your st driver ( minimum 108725-08 =
)

You can trace bptm & bpbkar ,take a look if there any too much wait. ( =
ie :
http://ftp.support.veritas.com/pub/support/products/NetBackup_DataCenter=
/240
733.pdf )

Hth

F@b

-----Message d'origine-----
De : David A. Chapa [mailto:david AT datastaff DOT com]
Envoy=E9 : mardi 22 octobre 2002 18:02
=C0 : andy.skates AT btopenworld DOT com
Cc : veritas-bu AT mailman.eng.auburn DOT edu
Objet : Re: [Veritas-bu] Backup speeds to STK 9940A drives


Without seeing any of your logs its hard to make suggestions, but I =
will=20
anyway ;-)

Change your NUMBER_DATA_BUFFERS =3D 64

You really ought to do some kind of performance assessment before you =
make=20
sweeping changes though.

Is this speed only when you are backing up itself or when you are =
backing up

network clients?

David

Quoting andy.skates AT btopenworld DOT com:

> Solaris 8 Media Server
> NBU 4.5 MP1
> E220R (dual processor, 3Gb RAM)
> Emulex LP8000 HBA
>=20
> NUMBER_DATA_BUFFERS =3D 32
> SIZE_DATA_BUFFERS =3D 262144
>=20
> Only getting about 15009Kb/sec to FC tape.
>=20
> Is there anything that I can change to try and
> improve this?



_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu

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<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT SIZE=3D2>Hi,</FONT>
</P>

<P><FONT SIZE=3D2>Maybe you can , also, take a look at your st driver ( =
minimum 108725-08 )</FONT>
</P>

<P><FONT SIZE=3D2>You can trace bptm &amp; bpbkar ,take a look if there =
any too much wait. ( ie : <A =
HREF=3D"http://ftp.support.veritas.com/pub/support/products/NetBackup_Da=
taCenter/240733.pdf" =
TARGET=3D"_blank">http://ftp.support.veritas.com/pub/support/products/Ne=
tBackup_DataCenter/240733.pdf</A> )</FONT></P>

<P><FONT SIZE=3D2>Hth</FONT>
</P>

<P><FONT SIZE=3D2>F@b</FONT>
</P>

<P><FONT SIZE=3D2>-----Message d'origine-----</FONT>
<BR><FONT SIZE=3D2>De : David A. Chapa [<A =
HREF=3D"mailto:david AT datastaff DOT com">mailto:david AT datastaff DOT 
com</A>]</FON=
T>
<BR><FONT SIZE=3D2>Envoy=E9 : mardi 22 octobre 2002 18:02</FONT>
<BR><FONT SIZE=3D2>=C0 : andy.skates AT btopenworld DOT com</FONT>
<BR><FONT SIZE=3D2>Cc : veritas-bu AT mailman.eng.auburn DOT edu</FONT>
<BR><FONT SIZE=3D2>Objet : Re: [Veritas-bu] Backup speeds to STK 9940A =
drives</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>Without seeing any of your logs its hard to make =
suggestions, but I will </FONT>
<BR><FONT SIZE=3D2>anyway ;-)</FONT>
</P>

<P><FONT SIZE=3D2>Change your NUMBER_DATA_BUFFERS =3D 64</FONT>
</P>

<P><FONT SIZE=3D2>You really ought to do some kind of performance =
assessment before you make </FONT>
<BR><FONT SIZE=3D2>sweeping changes though.</FONT>
</P>

<P><FONT SIZE=3D2>Is this speed only when you are backing up itself or =
when you are backing up </FONT>
<BR><FONT SIZE=3D2>network clients?</FONT>
</P>

<P><FONT SIZE=3D2>David</FONT>
</P>

<P><FONT SIZE=3D2>Quoting andy.skates AT btopenworld DOT com:</FONT>
</P>

<P><FONT SIZE=3D2>&gt; Solaris 8 Media Server</FONT>
<BR><FONT SIZE=3D2>&gt; NBU 4.5 MP1</FONT>
<BR><FONT SIZE=3D2>&gt; E220R (dual processor, 3Gb RAM)</FONT>
<BR><FONT SIZE=3D2>&gt; Emulex LP8000 HBA</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; NUMBER_DATA_BUFFERS =3D 32</FONT>
<BR><FONT SIZE=3D2>&gt; SIZE_DATA_BUFFERS =3D 262144</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; Only getting about 15009Kb/sec to FC =
tape.</FONT>
<BR><FONT SIZE=3D2>&gt; </FONT>
<BR><FONT SIZE=3D2>&gt; Is there anything that I can change to try =
and</FONT>
<BR><FONT SIZE=3D2>&gt; improve this?</FONT>
</P>
<BR>
<BR>

<P><FONT =
SIZE=3D2>_______________________________________________</FONT>
<BR><FONT SIZE=3D2>Veritas-bu maillist&nbsp; -&nbsp; =
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HREF=3D"http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu"; =
TARGET=3D"_blank">http://mailman.eng.auburn.edu/mailman/listinfo/veritas=
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