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Actually, I've already tried this in the 4.5 Veritas Ed lab. You can't =
do inline copy without the vault license. Nice eh? I figured why buy the =
vault option if you could just script the inline copy without vault and =
do the vaulting in your script with the inline copy feature and then =
just change the copy(s) to be part of an offsite pool. It would =
certainly save you some money, but Veritas already thought of that one =
;- )
=20
Craig
-----Original Message-----
From: White, Steve [mailto:Steve.White AT pacificorp DOT com]
Sent: Tuesday, July 09, 2002 8:49 AM
To: 'Donaldson, Mark'; 'Fabbro, Andrew P'; =
veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] NB 4.5 and Inline Copies?
Are you sure about that? I thought the base product could do a maximum =
of two inline copies, each restricted to the same retention whereas the =
Vault option provided the ability to do more than two copies, and each =
one to have a different retention.
=20
I may be recalling this incorrectly.
=20
Steve
-----Original Message-----
From: Donaldson, Mark [mailto:Mark.Donaldson AT experianems DOT com]
Sent: Tuesday, July 09, 2002 7:44 AM
To: 'Fabbro, Andrew P'; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] NB 4.5 and Inline Copies?
Just a quick note that a big disappointment to me is that in-line copy =
is part of the separately licensed Vault option. Unfortunately, my =
company is not willing to buy the whole product to get this one feature.
=20
-M
-----Original Message-----
From: Fabbro, Andrew P [mailto:Fabbro.Andrew AT cnf DOT com]
Sent: Monday, July 08, 2002 11:28 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] NB 4.5 and Inline Copies?
My understanding from NB notes I've read is that 4.5 supports in-line =
backup copies. e.g., you backup a client and write the backup to two =
tapes at the same time. The NB release notes say you can do up to 9 =
copies at the same time.
=20
Putting additional drives needed, etc. aside for a moment, it seems like =
it could be a good way to make offsite/disaster recovery backups without =
the hassle of either duplicating tapes (which doesn't scale well) or =
running another full backup
for offsite/DR purposes. I assume one could use Pool A for one copy and =
Pool B for another and send Pool B offsite.
=20
Some questions:
=20
- Has anyone used inline copying? How well does it work? =20
=20
- In NB 3.4.x, to use a duplicate of a tape, you need to flip it to the =
primary copy. It's easy enough to script - does NB 4.5 work the same =
way?
=20
- What about shared memory usage? The calculation for NB 3.4 is number =
of data buffers x size of data buffers x number of drives x MPX per =
drive. For a box driving DLT (64512 data buffer size recommended, maybe =
64 data buffers), it's not a major factor - usually not over 128Mb (say, =
8 drives at 4 MPX each). With more recent technologies, you want fatter =
buffers, more buffers, and more MPX - easily 512Mb of shared memory, =
maybe more. But I can't imagine all of that is just to drive the tape - =
some of it is network buffering, right? So if I need X kilobytes of =
shared memory for a tape drive, do I need X times 2 for two drives doing =
the same backup in an in-line backup? Or is it more like X times 1.5 =
(or whatever)?
=20
Thanks,
=20
=20
-drew
fabbro.andrew AT cnf DOT com
=20
=20
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<DIV><SPAN class=3D752213516-09072002><FONT face=3DArial color=3D#0000ff =
size=3D2>Actually, I've already tried this in the 4.5 Veritas Ed lab. =
You can't do=20
inline copy without the vault license. Nice eh? I figured why buy the =
vault=20
option if you could just script the inline copy without vault and =
do the=20
vaulting in your script with the inline copy feature and then just =
change=20
the copy(s) to be part of an offsite pool. It would certainly save you =
some=20
money, but Veritas already thought of that one ;- )</FONT></SPAN></DIV>
<DIV><SPAN class=3D752213516-09072002><FONT face=3DArial color=3D#0000ff =
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D752213516-09072002><FONT face=3DArial color=3D#0000ff =
size=3D2>Craig</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> White, Steve=20
[mailto:Steve.White AT pacificorp DOT com]<BR><B>Sent:</B> Tuesday, July 09, =
2002=20
8:49 AM<BR><B>To:</B> 'Donaldson, Mark'; 'Fabbro, Andrew P';=20
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> RE: [Veritas-bu] =
NB 4.5=20
and Inline Copies?<BR><BR></FONT></DIV>
<DIV><SPAN class=3D359154915-09072002><FONT face=3DArial =
color=3D#0000ff size=3D2>Are=20
you sure about that? I thought the base product could do a =
maximum of=20
two inline copies, each restricted to the same retention whereas the =
Vault=20
option provided the ability to do more than two copies, and each one =
to have a=20
different retention.</FONT></SPAN></DIV>
<DIV><SPAN class=3D359154915-09072002><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D359154915-09072002><FONT face=3DArial =
color=3D#0000ff size=3D2>I=20
may be recalling this incorrectly.</FONT></SPAN></DIV>
<DIV><SPAN class=3D359154915-09072002><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D359154915-09072002><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>Steve</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> Donaldson, Mark=20
[mailto:Mark.Donaldson AT experianems DOT com]<BR><B>Sent:</B> Tuesday, =
July 09,=20
2002 7:44 AM<BR><B>To:</B> 'Fabbro, Andrew P';=20
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> RE: =
[Veritas-bu] NB 4.5=20
and Inline Copies?<BR><BR></FONT></DIV>
<DIV><SPAN class=3D381014314-09072002><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>Just a quick note that a big disappointment to me is that =
in-line=20
copy is part of the separately licensed Vault option. =
Unfortunately,=20
my company is not willing to buy the whole product to get this one=20
feature.</FONT></SPAN></DIV>
<DIV><SPAN class=3D381014314-09072002><FONT face=3DArial =
color=3D#0000ff=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D381014314-09072002><FONT face=3DArial =
color=3D#0000ff=20
size=3D2>-M</FONT></SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> Fabbro, Andrew =
P=20
[mailto:Fabbro.Andrew AT cnf DOT com]<BR><B>Sent:</B> Monday, July 08, =
2002 11:28=20
PM<BR><B>To:</B> =
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B>=20
[Veritas-bu] NB 4.5 and Inline Copies?<BR><BR></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D569531405-09072002>My=20
understanding from NB notes I've read is that 4.5 supports in-line =
backup=20
copies. e.g., you backup a client and write the backup to =
two tapes=20
at the same time. The NB release notes say you can do up to =
9 copies=20
at the same time.</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D569531405-09072002></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D569531405-09072002>Putting=20
additional drives needed, etc. aside for a moment, it seems like =
it could=20
be a good way to make offsite/disaster recovery backups without =
the hassle=20
of either duplicating tapes (which doesn't scale well) or running =
another=20
full backup</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D569531405-09072002>for offsite/DR=20
purposes. I assume one could use Pool A for one copy and =
Pool B for=20
another and send Pool B offsite.</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D569531405-09072002></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D569531405-09072002>Some=20
questions:</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D569531405-09072002></SPAN></FONT> </DIV><SPAN=20
class=3D569531405-09072002>
<DIV><FONT face=3DArial size=3D2><SPAN =
class=3D569531405-09072002>- Has anyone=20
used inline copying? How well does it work? =20
</SPAN></FONT></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D569531405-09072002></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial><FONT size=3D2><SPAN =
class=3D569531405-09072002>-=20
</SPAN>In NB 3.4.x, to use a duplicate of a tape, you need to flip =
it to=20
the primary copy. It's easy enough to script - does NB 4.5 =
work the=20
same way?</FONT></FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV></SPAN><SPAN class=3D569531405-09072002><FONT face=3DArial =
size=3D2>- What=20
about shared memory usage? The calculation for NB 3.4 is =
number of=20
data buffers x size of data buffers x number of drives x MPX per=20
drive. For a box driving DLT (64512 data buffer size =
recommended,=20
maybe 64 data buffers), it's not a major factor - usually not over =
128Mb=20
(say, 8 drives at 4 MPX each). With more recent =
technologies, you=20
want fatter buffers, more buffers, and more MPX - easily 512Mb of =
shared=20
memory, maybe more. But I can't imagine all of that is just =
to drive=20
the tape - some of it is network buffering, right? So if I =
need X=20
kilobytes of shared memory for a tape drive, do I need X times 2 =
for two=20
drives doing the same backup in an in-line backup? Or is it =
more=20
like X times 1.5 (or whatever)?</FONT></SPAN></DIV>
<DIV><SPAN class=3D569531405-09072002><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D569531405-09072002><FONT face=3DArial=20
size=3D2>Thanks,</FONT></SPAN></DIV>
<DIV><SPAN class=3D569531405-09072002><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D569531405-09072002><FONT face=3DArial=20
size=3D2></FONT></SPAN> </DIV>
<DIV><SPAN class=3D569531405-09072002><FONT face=3DArial=20
size=3D2>-drew</FONT></SPAN></DIV>
<DIV><SPAN class=3D569531405-09072002><FONT face=3DArial =
size=3D2><FONT=20
color=3D#0000ff> </FONT><A=20
=
href=3D"mailto:fabbro.andrew AT cnf DOT com">fabbro.andrew AT cnf DOT
com</A></FONT></S=
PAN></DIV>
<DIV><FONT face=3DArial size=3D2><SPAN=20
class=3D569531405-09072002></SPAN></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2><SPAN class=3D569531405-09072002>
<DIV><FONT face=3DArial color=3D#0000ff size=3D2><SPAN=20
=
class=3D569531405-09072002></SPAN></FONT> </DIV></SPAN></FONT></DIV>=
</BLOCKQUOTE></BLOCKQUOTE>
=
<P>----------------------------------------------------------------------=
--------<BR><BR><BR>This=20
email is confidential and may be legally privileged.<BR><BR>It is =
intended=20
solely for the addressee. Access to this email by anyone else, unless=20
expressly approved by the sender or an authorized addressee, is=20
unauthorized.<BR><BR>If you are not the intended recipient, any =
disclosure,=20
copying, distribution or any action omitted or taken in reliance on =
it, is=20
prohibited and may be unlawful. If you believe that you have received =
this=20
email in error, please contact the sender, delete this e-mail and =
destroy all=20
=
copies.<BR><BR><BR>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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