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Ah - but remember the intangibles - no drive contention, no library errors,
no mount delays, increased availability. I just put a disk STU in and I
love it for just these reasons.
-M
-----Original Message-----
From: Jeff Kennedy [mailto:jlkennedy AT amcc DOT com]
Sent: Monday, May 13, 2002 2:53 PM
To: NBU List
Subject: Re: [Veritas-bu] disk storage unit
Forgot to add these are DLT7k drives.
~JK
Jeff Kennedy wrote:
>
> I created a disk storage unit on my backup server to test performance of
> disk vs. tape. I found that there isn't that much of an increase; 30%
> to 50%. It may look impressive at first but I was expecting at least
> 100%+ improvement. Here's my setup:
>
> Sun E250 - 2 X 400MHz, 2gb ram, gigabit network
> A5000 fiber array - 14 drives, Veritas VM striped-pro 7 and 7
>
> Most clients tested were gigabit as well, here's a sampling:
>
> Sun E280 - 2 X 750MHz, 8gb ram, gigabit
> Intel P3 (Novell) - 2 X 900MHz, 2gb ram, gigabit
>
> Is there something about setting up a disk stu that I missed? It looked
> simple enough.
>
> Thanks.
> --
> =====================
> Jeff Kennedy
> Unix Administrator
> AMCC
> jlkennedy AT amcc DOT com
> _______________________________________________
> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
--
=====================
Jeff Kennedy
Unix Administrator
AMCC
jlkennedy AT amcc DOT com
_______________________________________________
Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
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<TITLE>RE: [Veritas-bu] disk storage unit</TITLE>
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<P><FONT SIZE=3D2>Ah - but remember the intangibles - no drive =
contention, no library errors, no mount delays, increased =
availability. I just put a disk STU in and I love it for just =
these reasons.</FONT></P>
<P><FONT SIZE=3D2>-M</FONT>
</P>
<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Jeff Kennedy [<A =
HREF=3D"mailto:jlkennedy AT amcc DOT com">mailto:jlkennedy AT amcc DOT
com</A>]</FONT>=
<BR><FONT SIZE=3D2>Sent: Monday, May 13, 2002 2:53 PM</FONT>
<BR><FONT SIZE=3D2>To: NBU List</FONT>
<BR><FONT SIZE=3D2>Subject: Re: [Veritas-bu] disk storage unit</FONT>
</P>
<BR>
<P><FONT SIZE=3D2>Forgot to add these are DLT7k drives.</FONT>
</P>
<P><FONT SIZE=3D2>~JK</FONT>
</P>
<P><FONT SIZE=3D2>Jeff Kennedy wrote:</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> I created a disk storage unit on my backup =
server to test performance of</FONT>
<BR><FONT SIZE=3D2>> disk vs. tape. I found that there isn't =
that much of an increase; 30%</FONT>
<BR><FONT SIZE=3D2>> to 50%. It may look impressive at first =
but I was expecting at least</FONT>
<BR><FONT SIZE=3D2>> 100%+ improvement. Here's my =
setup:</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Sun E250 - 2 X 400MHz, 2gb ram, gigabit =
network</FONT>
<BR><FONT SIZE=3D2>> A5000 fiber array - 14 drives, Veritas VM =
striped-pro 7 and 7</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Most clients tested were gigabit as well, =
here's a sampling:</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Sun E280 - 2 X 750MHz, 8gb ram, gigabit</FONT>
<BR><FONT SIZE=3D2>> Intel P3 (Novell) - 2 X 900MHz, 2gb ram, =
gigabit</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Is there something about setting up a disk stu =
that I missed? It looked</FONT>
<BR><FONT SIZE=3D2>> simple enough.</FONT>
<BR><FONT SIZE=3D2>> </FONT>
<BR><FONT SIZE=3D2>> Thanks.</FONT>
<BR><FONT SIZE=3D2>> --</FONT>
<BR><FONT SIZE=3D2>> =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</FONT>
<BR><FONT SIZE=3D2>> Jeff Kennedy</FONT>
<BR><FONT SIZE=3D2>> Unix Administrator</FONT>
<BR><FONT SIZE=3D2>> AMCC</FONT>
<BR><FONT SIZE=3D2>> jlkennedy AT amcc DOT com</FONT>
<BR><FONT SIZE=3D2>> =
_______________________________________________</FONT>
<BR><FONT SIZE=3D2>> Veritas-bu maillist - =
Veritas-bu AT mailman.eng.auburn DOT edu</FONT>
<BR><FONT SIZE=3D2>> <A =
HREF=3D"http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu"; =
TARGET=3D"_blank">http://mailman.eng.auburn.edu/mailman/listinfo/veritas=
-bu</A></FONT>
</P>
<P><FONT SIZE=3D2>-- </FONT>
<BR><FONT =
SIZE=3D2>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
</FONT>
<BR><FONT SIZE=3D2>Jeff Kennedy</FONT>
<BR><FONT SIZE=3D2>Unix Administrator</FONT>
<BR><FONT SIZE=3D2>AMCC</FONT>
<BR><FONT SIZE=3D2>jlkennedy AT amcc DOT com</FONT>
<BR><FONT =
SIZE=3D2>_______________________________________________</FONT>
<BR><FONT SIZE=3D2>Veritas-bu maillist - =
Veritas-bu AT mailman.eng.auburn DOT edu</FONT>
<BR><FONT SIZE=3D2><A =
HREF=3D"http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu"; =
TARGET=3D"_blank">http://mailman.eng.auburn.edu/mailman/listinfo/veritas=
-bu</A></FONT>
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