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[Veritas-bu] Where in NBU are drive settings (LTO-1 and LTO-2) tuned separatel y?
2003-12-05 11:34:20
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Subject: |
[Veritas-bu] Where in NBU are drive settings (LTO-1 and LTO-2) tuned separatel y? |
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From: |
TWu AT PPC DOT com (Tommy Wu) |
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Date: |
Fri, 5 Dec 2003 11:34:20 -0500 |
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How did you determine the bottleneck? Check the wait time in the bptm
log (grep for times or wait). We are getting 50MB/Sec using multiplexing
four backup streams to one LTO 2 tape drive.
Tommy
=20
-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Parisi,
Aren
Sent: Thursday, December 04, 2003 3:08 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'>How did you determine the =
bottleneck? Check
the wait time in the <span class=3DSpellE>bptm</span> log (<span =
class=3DSpellE>grep</span>
for times or wait). We are getting 50MB/Sec using multiplexing four =
backup
streams to one LTO 2 tape drive.<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'>Tommy<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 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>
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>Parisi, Aren<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Thursday, December =
04, 2003
3:08 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] =
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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