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One solution is to move up to v4.5. You could write your primary copy and
your duplicate copy at the same time.
To answer your post, though, I've found that read rates are usually less
than write rates. There will be other considerations as what the bus
positions of your write drives are compared to your read drives,
compressibility of data, etc.
Since you're licensed for vault, you might wish to investigate the upgrade
to 4.5.
-----Original Message-----
From: Karunanidhi Subramanian [mailto:karunanidhis AT hotmail DOT com]
Sent: Monday, June 17, 2002 11:20 AM
To: Veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Duplication time !
Hi Folks !
I am using bpvault extension (3.4)to setup an offsite media storage system.
While testing the duplication, I see the duplication speed being 30 GB/Hour
where as our backup speed is 35 GB/hour. We are using 2 LTO libraries (IBM
3584) with six drives each and we don't multiplex the backups and I am
utilizing all the drives for duplicating (3 drive pairs)
I need to know what is the duplication speed I can expect if my backups run
at 35GB/hour. If you share your experience with vault, that would be very
helpful to me.
Our weekend full backup is 2 TB and at this duplication speed it will be
impossible for us to duplicate in one day.
Thanks,
- Karun
_________________________________________________________________
Chat with friends online, try MSN Messenger: http://messenger.msn.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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5.5.2653.12">
<TITLE>RE: [Veritas-bu] Duplication time !</TITLE>
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<P><FONT SIZE=3D2>One solution is to move up to v4.5. You could =
write your primary copy and your duplicate copy at the same =
time.</FONT>
</P>
<P><FONT SIZE=3D2>To answer your post, though, I've found that read =
rates are usually less than write rates. There will be other =
considerations as what the bus positions of your write drives are =
compared to your read drives, compressibility of data, etc.</FONT></P>
<P><FONT SIZE=3D2>Since you're licensed for vault, you might wish to =
investigate the upgrade to 4.5.</FONT>
</P>
<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Karunanidhi Subramanian [<A =
HREF=3D"mailto:karunanidhis AT hotmail DOT com">mailto:karunanidhis AT hotmail
DOT com=
</A>]</FONT>
<BR><FONT SIZE=3D2>Sent: Monday, June 17, 2002 11:20 AM</FONT>
<BR><FONT SIZE=3D2>To: Veritas-bu AT mailman.eng.auburn DOT edu</FONT>
<BR><FONT SIZE=3D2>Subject: [Veritas-bu] Duplication time !</FONT>
</P>
<BR>
<P><FONT SIZE=3D2>Hi Folks !</FONT>
<BR><FONT SIZE=3D2>I am using bpvault extension (3.4)to setup an =
offsite media storage system. </FONT>
<BR><FONT SIZE=3D2>While testing the duplication, I see the duplication =
speed being 30 GB/Hour </FONT>
<BR><FONT SIZE=3D2>where as our backup speed is 35 GB/hour. We are =
using 2 LTO libraries (IBM </FONT>
<BR><FONT SIZE=3D2>3584) with six drives each and we don't multiplex =
the backups and I am </FONT>
<BR><FONT SIZE=3D2>utilizing all the drives for duplicating (3 drive =
pairs)</FONT>
</P>
<P><FONT SIZE=3D2>I need to know what is the duplication speed I can =
expect if my backups run </FONT>
<BR><FONT SIZE=3D2>at 35GB/hour. If you share your experience with =
vault, that would be very </FONT>
<BR><FONT SIZE=3D2>helpful to me.</FONT>
</P>
<P><FONT SIZE=3D2>Our weekend full backup is 2 TB and at this =
duplication speed it will be </FONT>
<BR><FONT SIZE=3D2>impossible for us to duplicate in one day.</FONT>
</P>
<P><FONT SIZE=3D2>Thanks,</FONT>
<BR><FONT SIZE=3D2>- Karun</FONT>
</P>
<BR>
<BR>
<P><FONT =
SIZE=3D2>_______________________________________________________________=
__</FONT>
<BR><FONT SIZE=3D2>Chat with friends online, try MSN Messenger: <A =
HREF=3D"http://messenger.msn.com"; =
TARGET=3D"_blank">http://messenger.msn.com</A></FONT>
</P>
<P><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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