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[Veritas-bu] HP LTO 3 Ultrium & WIN2K03 NBU Optimization?
2006-01-31 16:16:15
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Subject: |
[Veritas-bu] HP LTO 3 Ultrium & WIN2K03 NBU Optimization? |
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From: |
mambrose AT qualcomm DOT com (Ambrose, Monte) |
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Date: |
Tue, 31 Jan 2006 13:16:15 -0800 |
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Daryl
=20
A large SIZE_DATA_BUFFERS is not always the best configuration. If the
Windows limitation is 64KB I would go with that. You also need to set
the NUMBER_DATA_BUFFERS. Since you are using a smaller data buffer
size I would increase the number of data buffers X 4. Example: If you
were going to use 40 buffers increase it to 160. It all works out the
same in the end but now you are setting to the system limit for each
buffer. I have found that more buffers with a not so huge size tendsto
work better any way.
=20
Monte
=20
________________________________
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Daryl
Katauskas
Sent: Tuesday, January 31, 2006 12:29 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] HP LTO 3 Ultrium & WIN2K03 NBU Optimization?
=20
Hello all:
=20
Am in the midst of deploying new HP LTO3 (Fibre) drives in our NBU
environment and am finding some conflicting information regarding NBU
buffer configuration.
=20
(Using Qlogic & Emulex HBA's).
=20
HP recommends the following settings: =20
=20
<install path>\ NetBackup\db\config\SIZE_DATA_BUFFERS =3D 256KB (262144)
=20
I have read (MS Technet Article Q152518) which states that the Windows
O/S has a limitation of 64KB tape variable blocksize.
=20
If this is the case, how does one configure NBU 5.x/6.x to optimally
perform under WIN2K03 or WIN2K with Fibre LTO3 drives?
=20
Any insight/info would be most appreciated.
=20
=20
Daryl Katauskas
Consultant, Storage Solutions
2050 Finley Road, Suite 80
Lombard, IL 60148
vox 630.281.7041
fax 630.904.9601
=20
=20
=20
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Daryl</span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>A large SIZE_DATA_BUFFERS is not =
always the
best configuration. If the Windows limitation is 64KB I would go =
with that. You
also need to set the NUMBER_DATA_BUFFERS. Since you are =
using a smaller data buffer
size I would increase the number of data buffers X 4. =
Example: If you were going
to use 40 buffers increase it to 160. It all works out the same in =
the end but
now you are setting to the system limit for each buffer. I have =
found that more
buffers with a not so huge size tendsto work better any =
way.</span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Monte</span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
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10.0pt;font-family:Arial;color:navy'> </span></font></p>
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<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'>
veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] <b><span =
style=3D'font-weight:
bold'>On Behalf Of </span></b>Daryl Katauskas<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Tuesday, January =
31, 2006
12:29 PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> =
veritas-bu AT mailman.eng.auburn DOT edu<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [Veritas-bu] HP =
LTO 3
Ultrium & WIN2K03 NBU Optimization?</span></font></p>
</div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hello all:</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Am in the midst of deploying new HP LTO3 (Fibre) =
drives in
our NBU environment and am finding some conflicting information =
regarding NBU
buffer configuration.</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>(Using Qlogic & Emulex =
HBA’s).</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>HP recommends the following settings: =
</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><install path>\ =
NetBackup\db\config\SIZE_DATA_BUFFERS
=3D 256KB (262144)</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I have read (MS Technet Article Q152518) which states =
that
the Windows O/S has a limitation of 64KB tape variable =
blocksize.</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>If this is the case, how does one configure NBU =
5.x/6.x to optimally
perform under WIN2K03 or WIN2K with Fibre LTO3 drives?</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Any insight/info would be most =
appreciated.</span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> </span></font></p>
<p class=3DMsoAutoSig><b><font size=3D2 color=3Dnavy face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma;color:navy;font-weight:bold'=
>Daryl
Katauskas</span></font></b></p>
<p class=3DMsoAutoSig><b><font size=3D2 color=3D"#333333" =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma;color:#333333;font-weight:bo=
ld'>Consultant,
Storage Solutions</span></font></b></p>
<p class=3DMsoAutoSig><font
size=3D2 color=3D"#333333" face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:
Tahoma;color:#333333'>2050 Finley Road, Suite 80</span></font></p>
<p class=3DMsoAutoSig><font size=3D2 color=3D"#333333" =
face=3DTahoma><span
=
style=3D'font-size:10.0pt;font-family:Tahoma;color:#333333'>Lombard</span=
></font><font
size=3D2 color=3D"#333333" face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:
Tahoma;color:#333333'>, IL 60148</span></font></p>
<p class=3DMsoAutoSig><b><font size=3D2 color=3Dnavy face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma;color:navy;font-weight:bold'=
>vox </span></font></b><font
size=3D2 color=3D"#333333" face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:
Tahoma;color:#333333'>630.281.7041</span></font></p>
<p class=3DMsoAutoSig><b><font size=3D2 color=3Dnavy face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma;color:navy;font-weight:bold'=
>fax</span></font></b><font
size=3D2 color=3Dnavy face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:Tahoma;
color:navy'> </span></font><font size=3D2 color=3D"#333333" =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma;color:#333333'>630.904.9601<=
/span></font></p>
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style=3D'font-size:9.0pt;font-family:Arial;color:black;font-weight:bold'>=
<img
width=3D96 height=3D62 src=3D"cid:[email protected]"
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