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I'm not sure I agree about backup jobs extended. We run about 5,000 backups
a weekend, all in-line. So that's about 15,000 jobs (mother job + 2 copies
for each = 15,000 jobs). My experience has been that the jobs run about the
same length. However, we doubled our number of drives before implementing
in-line copies ;)
If you do the shared memory math correctly, you are supposed to have enough,
but my experience has been that you need more when doing in-line copies.
We do it for every job at this point - every backup, incremental, etc. Then
our vault sweeps up the off-site copies and sends them off-site. It all
depends on what your needs are in terms of DR, of course.
-----Original Message-----
From: David A. Chapa [mailto:david AT datastaff DOT com]
Sent: Friday, April 04, 2003 8:48 AM
To: Scott Jacobson; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] 4.5 Vaulting In-Line Tape Copy
You will definitely see a hit on your backup jobs extending. However, its
important to understand that inline tape copy isn't right for EVERY job.
this is for your VERY large jobs that take forever to backup first of all
and cause us grief during our duplication window. I have a client
evaluating the product now and they will be using it for the VERY large
server backups so they can effectively minimize their exposure for disaster.
Its hard to put a fixed number on how long it will take you because your
mileage may vary. I hope to have some of these "real" numbers when they are
done testing.
I wouldn't necessarily choose it for your primary DR procedure unless of
course all of the data you have has been ranked a 10 out of 10 for critical
importance to business viability.
This all of course is IMHO
David
<><><><><><><><><><><><><><><><><><><><>
David A. Chapa
DataStaff, Inc.
312-683-1144
http://www.BackupScripts.com <http://www.backupscripts.com/>
"where script happens"
Post your questions in our forums
Co-Author of
Implementing Backup and Recovery:
The Readiness Guide for the Enterprise
published by John Wiley and Sons
A Veritas Solution Series Publication
ISBN:0471227145
---------------------------------------
-----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 Scott
Jacobson
Sent: Friday, April 04, 2003 10:19 AM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] 4.5 Vaulting In-Line Tape Copy
We are looking into this as the primary off-site/DR procedure of choice.
Can anyone speak to the "real" world usage of this process and indicate the
performance hit of the copy (two streams) vs the single stream backup
throughput?
Thanks,
Scott Jacobson
NetBackup Systems Administration
Data Retention and Storage Management
I. S. & T. Provo Operations
sjacobso AT novell DOT com <mailto:sjacobso AT novell DOT com>
Desk Direct: 801-861-7668
Toll Free: 800-453-1267 Ext. 1-7668
Cell: 801-560-6891
Novell, Inc., the leading provider of Net business solutions
www.novell.com <http://www.novell.com>
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<DIV><SPAN class=167365416-04042003>I'm not sure I agree about backup jobs
extended. We run about 5,000 backups a weekend, all in-line. So
that's about 15,000 jobs (mother job + 2 copies for each = 15,000 jobs).
</SPAN><SPAN class=167365416-04042003>My experience has been that the jobs run
about the same length. However, we doubled our number of drives before
implementing in-line copies ;)</SPAN></DIV>
<DIV><SPAN class=167365416-04042003></SPAN> </DIV>
<DIV><FONT face=Tahoma><SPAN class=167365416-04042003></SPAN></FONT><FONT
face=Tahoma><SPAN class=167365416-04042003></SPAN></FONT><FONT
face=Tahoma><SPAN
class=167365416-04042003>If you do the shared memory math correctly, you are
supposed to have enough, but my experience has been that you need more when
doing in-line copies.</SPAN></FONT></DIV>
<DIV><FONT face=Tahoma><SPAN class=167365416-04042003></SPAN></FONT> </DIV>
<DIV><FONT face=Tahoma><SPAN class=167365416-04042003>We do it for every job at
this point - every backup, incremental, etc. Then our vault sweeps up the
off-site copies and sends them off-site. It all depends on what your
needs
are in terms of DR, of course.</SPAN></FONT></DIV>
<DIV><FONT face=Tahoma><SPAN class=167365416-04042003></SPAN></FONT><FONT
face=Tahoma><SPAN class=167365416-04042003></SPAN></FONT><FONT
face=Tahoma><SPAN
class=167365416-04042003></SPAN></FONT> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma><SPAN class=167365416-04042003> </SPAN>-----Original
Message-----<BR><B>From:</B> David A. Chapa [mailto:david AT datastaff DOT
com]
<BR><B>Sent:</B> Friday, April 04, 2003 8:48 AM<BR><B>To:</B> Scott Jacobson;
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> RE: [Veritas-bu]
4.5
Vaulting In-Line Tape Copy<BR><BR></DIV></FONT>
<DIV><SPAN class=671524116-04042003>You will definitely see a hit on your
backup jobs extending. However, its important to understand that inline
tape copy isn't right for EVERY job.</SPAN></DIV>
<DIV><SPAN class=671524116-04042003></SPAN> </DIV>
<DIV><SPAN class=671524116-04042003>this is for your VERY large jobs that
take
forever to backup first of all and cause us grief during our duplication
window. I have a client evaluating the product now and they will be
using it for the VERY large server backups so they can effectively minimize
their exposure for disaster. </SPAN></DIV>
<DIV><SPAN class=671524116-04042003></SPAN> </DIV>
<DIV><SPAN class=671524116-04042003>Its hard to put a fixed number on how
long
it will take you because your mileage may vary. I hope to have some of
these "real" numbers when they are done testing.</SPAN></DIV>
<DIV><SPAN class=671524116-04042003></SPAN> </DIV>
<DIV><SPAN class=671524116-04042003>I wouldn't necessarily choose it for your
primary DR procedure unless of course all of the data you have has been
ranked
a 10 out of 10 for critical importance to business viability.</SPAN></DIV>
<DIV><SPAN class=671524116-04042003></SPAN> </DIV>
<DIV><SPAN class=671524116-04042003>This all of course is IMHO</SPAN></DIV>
<DIV><SPAN class=671524116-04042003></SPAN> </DIV>
<DIV><SPAN class=671524116-04042003>David</SPAN></DIV>
<DIV><SPAN class=671524116-04042003></SPAN> </DIV>
<P><><><><><><><><><><><><><><><><><><><><><BR>David
A. Chapa<BR>DataStaff, Inc.<BR>312-683-1144<BR><A
href="http://www.backupscripts.com/";
target=_blank>http://www.BackupScripts.com</A><BR>"where script
happens"<BR>Post your questions in our forums<BR><BR>Co-Author
of<BR>Implementing Backup and Recovery:<BR>The Readiness Guide for the
Enterprise<BR>published by John Wiley and Sons<BR>A Veritas Solution Series
Publication<BR>ISBN:0471227145<BR>--------------------------------------- </P>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT
face=Tahoma>-----Original Message-----<BR><B>From:</B>
veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]<B>On Behalf Of
</B>Scott
Jacobson<BR><B>Sent:</B> Friday, April 04, 2003 10:19 AM<BR><B>To:</B>
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> [Veritas-bu]
4.5
Vaulting In-Line Tape Copy<BR><BR></FONT></DIV>
<DIV>We are looking into this as the primary off-site/DR procedure of
choice.</DIV>
<DIV> </DIV>
<DIV>Can anyone speak to the "real" world usage of this process and
indicate
the performance hit of the copy (two streams) vs the single stream
backup throughput?</DIV>
<DIV> </DIV>
<DIV>Thanks,</DIV>
<DIV> </DIV>
<DIV>Scott Jacobson<BR>NetBackup Systems Administration<BR>Data Retention
and Storage Management<BR>I. S. & T. Provo Operations<BR><A
href="mailto:sjacobso AT novell DOT com">sjacobso AT novell DOT
com</A><BR>Desk
Direct: 801-861-7668<BR>Toll
Free: 800-453-1267 Ext.
1-7668<BR>Cell:
801-560-6891<BR>Novell, Inc., the leading provider of Net business
solutions<BR><A
href="http://www.novell.com";>www.novell.com</A></DIV></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>
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