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If the card supports high speed PCI, then make sure it's in one of the
high-speed PCI slots on the 4800. If you're reading your data from some
other source than the HBA (local disks, another HBA) make sure it's in a
slot that's on a different PCI bus from that one. If you're reading it from
the same HBA, then you're really getting 120MBps, which is 960Mbps, or close
to saturating the Gb SAN.
-----Original Message-----
From: Vijay Korde [mailto:vijay_korde AT hotmail DOT com]
Sent: Thursday, April 24, 2003 10:24 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] performance of the STK 9840B tape drive with the
SunFire 4800 machine
Hi to all,
I'm researching the performance of the STK 9840B tape drive with the SunFire
4800 machine. We have a Qlogics 2200 HBA and find a throughput limitation of
about 60 MB/sec regardless of the number of drives. Has anyone observed
similar problems? What kind of performance have other users seen in this
environment? We're using Veritas Netbackup, but the performance limitation
is the same with other software.
Regards,
Vijay
If you have received this e-mail in error or wish to read our e-mail disclaimer
statement and monitoring policy, please refer to
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<DIV><SPAN class=488404314-24042003><FONT face=Arial color=#0000ff size=2>If
the
card supports high speed PCI, then make sure it's in one of the high-speed PCI
slots on the 4800. If you're reading your data from some other source than the
HBA (local disks, another HBA) make sure it's in a slot that's on a different
PCI bus from that one. If you're reading it from the same HBA, then you're
really getting 120MBps, which is 960Mbps, or close to saturating the Gb
SAN.</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Vijay Korde
[mailto:vijay_korde AT hotmail DOT com]<BR><B>Sent:</B> Thursday, April 24,
2003
10:24 AM<BR><B>To:</B> veritas-bu AT mailman.eng.auburn DOT
edu<BR><B>Subject:</B>
[Veritas-bu] performance of the STK 9840B tape drive with the SunFire 4800
machine<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>Hi to all,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>I'm researching the performance of the STK 9840B
tape drive with the SunFire 4800 machine. We have a Qlogics 2200 HBA and find
a throughput limitation of about 60 MB/sec regardless of the number of
drives.
Has anyone observed similar problems? What kind of performance have other
users seen in this environment? We're using Veritas Netbackup, but the
performance limitation is the same with other software.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Regards,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>Vijay</FONT></DIV></BLOCKQUOTE><FONT SIZE=3><BR>
<BR>
If you have received this e-mail in error or wish to read our e-mail disclaimer
statement and monitoring policy, please refer to
http://www.drkw.com/disc/email/ or contact the sender.<BR>
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