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Since you are running HP you CAN configure them independently, at least
at the driver level.
=20
I assume you are using IBMs driver (atdd) which contains both the tape
driver and the medium changer.
=20
IBM published a REDBOOK on their Gen 2 product and how to configure it
with various OS's and applications.
=20
http://www.redbooks.ibm.com/redbooks/pdfs/sg246502.pdf
=20
This should answer your questions. If not, please let me know.
David A. Chapa * Technical Advisor, Technical Marketing * ADIC *
720.249.5836 * david.chapa AT adic DOT com
Pathlight VX - Integrated Disk-to-Tape Backup - http://www.adic.com
<http://www.adic.com>=20
-----Original Message-----
From: Parisi, Aren [mailto:Aren.Parisi AT wwireless DOT com]=20
Sent: Thursday, December 04, 2003 1:08 PM
To: 'veritas-bu AT mailman.eng.auburn DOT edu'
Subject: [Veritas-bu] Where in NBU are drive settings (LTO-1 and LTO-2)
tuned separatel y?
=20
NBU 3.4.1 Master:HP-UX 11i three-way service guard cluster Library:ADIC
scalar10k IBM Ultrium drives:20@LTO-1, 10@LTO-2 same cabinet. We have
just benchmarked our new LTO-2 drives and they are NO FASTER than the
LTO-1 drives. Are there separate tuneables for the new drives we are not
looking at? Buffer settings, something undocumented perhaps? We have a
3GB (bound) FC ethernet connection on the media server so I don't think
it's a network bottleneck, disk is XP-512 (rebadged Hitachi) screaming
fast disk. Tested same class on each type of drive, identical runtimes.
??? Thank you experts.
Aren M. Parisi *=20
Information Technology=20
Western Wireless Corp.=20
(425)313-5225 mob.(206)795-6631=20
Where are we going and why am I in this handbasket?=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'>Since you are running HP you CAN =
configure
them independently, at least at the driver =
level.<o:p></o:p></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'><o:p> </o:p></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'>I assume you are using <span =
class=3DSpellE>IBMs</span>
driver (<span class=3DSpellE>atdd</span>) which contains both the tape =
driver and
the medium changer.<o:p></o:p></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'><o:p> </o:p></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'>IBM published a REDBOOK on their =
Gen 2
product and how to configure it with various <span =
class=3DSpellE>OS’s</span>
and applications.<o:p></o:p></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'><o:p> </o:p></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
href=3D"http://www.redbooks.ibm.com/redbooks/pdfs/sg246502.pdf";>http://ww=
w.redbooks.ibm.com/redbooks/pdfs/sg246502.pdf</a><o:p></o:p></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'><o:p> </o:p></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'>This should answer your =
questions.<span
style=3D'mso-spacerun:yes'> </span>If not, please let me =
know.<o:p></o:p></span></font></p>
<div>
<p><b><font size=3D1 color=3Dnavy face=3D"Times New Roman"><span =
style=3D'font-size:
7.5pt;color:navy;font-weight:bold;mso-no-proof:yes'>David A. Chapa =
</span></font></b><font
size=3D1 color=3Dnavy face=3DSymbol><span =
style=3D'font-size:7.5pt;font-family:Symbol;
color:navy;mso-no-proof:yes'>½</span></font><font size=3D1 =
color=3Dnavy><span
style=3D'font-size:7.5pt;color:navy;mso-no-proof:yes'> Technical =
Advisor,
Technical Marketing </span></font><font size=3D1 color=3Dnavy =
face=3DSymbol><span
style=3D'font-size:7.5pt;font-family:Symbol;color:navy;mso-no-proof:yes'>=
½</span></font><font
size=3D1 color=3D"#999999"><span =
style=3D'font-size:7.5pt;color:#999999;mso-no-proof:
yes'> </span></font><b><font size=3D1 color=3Dred><span =
style=3D'font-size:7.5pt;
color:red;font-weight:bold;mso-no-proof:yes'>ADIC</span></font></b><font
size=3D1 color=3D"#999999"><span =
style=3D'font-size:7.5pt;color:#999999;mso-no-proof:
yes'> </span></font><font size=3D1 color=3Dnavy face=3DSymbol><span =
style=3D'font-size:
7.5pt;font-family:Symbol;color:navy;mso-no-proof:yes'>½</span></fo=
nt><font
size=3D1 color=3Dnavy><span =
style=3D'font-size:7.5pt;color:navy;mso-no-proof:yes'>
720.249.5836 </span></font><font size=3D1 color=3Dnavy =
face=3DSymbol><span
style=3D'font-size:7.5pt;font-family:Symbol;color:navy;mso-no-proof:yes'>=
½
</span></font><font size=3D1 color=3Dnavy><span =
style=3D'font-size:7.5pt;color:navy;
mso-no-proof:yes'><a =
href=3D"mailto:david.chapa AT adic DOT com">david.chapa AT adic DOT
com</a></span></fon=
t><font
color=3Dnavy><span =
style=3D'color:navy;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p><font size=3D1 color=3Dnavy face=3D"Times New Roman"><span =
style=3D'font-size:7.5pt;
color:navy;mso-no-proof:yes'>Pathlight VX - Integrated Disk-to-Tape =
Backup - </span></font><font
color=3Dnavy><span style=3D'color:navy;mso-no-proof:yes'><a
href=3D"http://www.adic.com";><font size=3D1><span =
style=3D'font-size:7.5pt'>http://www.adic.com</span></font></a></span></f=
ont><o:p></o:p></p>
</div>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D2 =
face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma'>-----Original =
Message-----<br>
<b><span style=3D'font-weight:bold'>From:</span></b> =
</span></font><st1:PersonName><font
size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:Tahoma'>Parisi,
Aren</span></font></st1:PersonName><font size=3D2 face=3DTahoma><span
style=3D'font-size:10.0pt;font-family:Tahoma'> =
[mailto:Aren.Parisi AT wwireless DOT com<span
class=3DGramE>] <br>
<b><span style=3D'font-weight:bold'>Sent</span></b></span><b><span
style=3D'font-weight:bold'>:</span></b> Thursday, December 04, 2003 1:08 =
PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> =
'</span></font><st1:PersonName><font
size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:Tahoma'>veritas-bu AT mailman.eng DOT
aubu=
rn.edu</span></font></st1:PersonName><font
size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;font-family:Tahoma'>'<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [Veritas-bu] =
Where in NBU
are drive settings (LTO-1 and LTO-2) tuned separatel =
y?</span></font></p>
<p class=3DMsoNormal style=3D'margin-left:.5in'><font size=3D3 =
face=3D"Times New Roman"><span
style=3D'font-size:12.0pt'><o:p> </o:p></span></font></p>
<p style=3D'margin-left:.5in'><font size=3D2 face=3DCourier><span =
style=3D'font-size:
10.0pt;font-family:Courier'>NBU 3.4.1 Master:HP-UX 11i three-way service =
guard
cluster Library:ADIC scalar10k IBM Ultrium drives:20@LTO-1, 10@LTO-2 =
same
cabinet. We have just benchmarked our new LTO-2 drives and they are NO =
FASTER
than the LTO-1 drives. Are there separate tuneables for the new drives =
we are
not looking at? Buffer settings, something undocumented =
perhaps? We
have a 3GB (bound) FC ethernet connection on the media server so I don't =
think
it's a network bottleneck, disk is XP-512 (rebadged Hitachi) screaming =
fast
disk. Tested same class on each type of drive, identical runtimes. =
???
Thank you experts.</span></font><o:p></o:p></p>
<p style=3D'margin-left:.5in'><font size=3D4 color=3Dred face=3D"Century =
Gothic"><span
style=3D'font-size:13.5pt;font-family:"Century =
Gothic";color:red'>
Aren M. Parisi</span></font> <font size=3D2 color=3Dred =
face=3DSymbol><span
style=3D'font-size:10.0pt;font-family:Symbol;color:red'>Ò</span></=
font> <br>
<font size=3D2 color=3Dblack face=3DCourier><span =
style=3D'font-size:10.0pt;font-family:
Courier;color:black'> Information Technology</span></font> <br>
<font size=3D2 color=3Dblack face=3DCourier><span =
style=3D'font-size:10.0pt;font-family:
Courier;color:black'> Western Wireless Corp.</span></font> <br>
<font size=3D1 color=3Dblack face=3DMonotype.com><span =
style=3D'font-size:7.5pt;
font-family:"Monotype\.com";color:black'>(425)313-5225 =
mob.(206)795-6631</span></font>
<br>
<font size=3D1 color=3Dblack face=3D"Small Fonts"><span =
style=3D'font-size:7.5pt;
font-family:"Small Fonts";color:black'>Where are we going and why am I =
in this
handbasket?</span></font> <o:p></o:p></p>
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