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My intent is to backup to VTL at night, and duplicate to tape during the
day, every day.
we'll keep at least 2 weekly FULLs plus subsequent incrementals on disk
=20
we're using the disk primarily as a means of getting away from
multiplexing, as we have so many slow clients, that even with 8+
multiplexing, we can't stream our LTO3 drives....with VTL, we have don't
have to deal with the performance hit of shoeshining, and we will get
much better performance from SATA array to LTO3 during our duplication,
than from network clients direct to Tape.
=20
Also, because of pools and policies we're required to have, we can just
create more virtual drives than we have physical drives, and the virtual
drive doesn't care that there's only a single 10Mb/s client on the end
of an encrypted link, whereas with physical tape, you're shoeshining
from here to tomorrow, and tying up a $20,000 tape drive for 24 hours to
backup one machine.....later on, after that backup is done, it types up
a physical drive for 5 minutes to duplicate.
=20
that's my rational anyway.....
=20
Paul
=20
=20
-----Original Message-----
From: Hampus Lind [mailto:hampus.lind AT rps.police DOT se]=20
Sent: May 18, 2006 2:38 PM
To: Paul Keating; veritas-bu AT mailman.eng.auburn DOT edu
Subject: SV: [Veritas-bu] Netbackup PureDisk vs datadomain / Diligent..
:-)
=20
Do you have any thoughts on how you would use tapes in a
diligent or falconstor environment? Or are you looking at only use disk
as a backup media?
For safety reasons one could mirror the disk and replicate the
servers to different sites, but yet I don't know if its enough.
=20
Basically with these products you only have one generation of a
fullbackup (if you don't make some more of curse, but then you need more
disk capacity), which means if you lose that disk all backups are gone.
Do you see any risks with this? Of course if you mirror the disk to one
or more sites you are much safer.
=20
I think the tape vendors have brainwashed me!! :-)
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<DIV><SPAN class=3D324114818-18052006><FONT face=3DArial color=3D#800000 =
size=3D2>My=20
intent is to backup to VTL at night, and duplicate to tape during =
the day,=20
every day.</FONT></SPAN></DIV>
<DIV><SPAN class=3D324114818-18052006><FONT face=3DArial color=3D#800000 =
size=3D2>we'll=20
keep at least 2 weekly FULLs plus subsequent incrementals on=20
disk</FONT></SPAN></DIV>
<DIV><FONT face=3DArial color=3D#800000 size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#800000><SPAN=20
class=3D324114818-18052006>we're using the disk primarily as a means of =
getting=20
away from multiplexing, as we have so many slow clients, that even with =
8+=20
multiplexing, we can't stream our LTO3 drives....with VTL, we have don't =
have to=20
deal with the performance hit of shoeshining</SPAN><SPAN=20
class=3D324114818-18052006>, and we will get much better performance =
from SATA=20
array to LTO3 during our duplication, than from network clients direct =
to=20
Tape.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#800000><SPAN=20
class=3D324114818-18052006></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#800000><SPAN=20
class=3D324114818-18052006>Also, because of pools and policies we're =
required to=20
have, we can just create more virtual drives than we have physical =
drives, and=20
the virtual drive doesn't care that there's only a single 10Mb/s client =
on the=20
end of an encrypted link, whereas with physical tape, you're shoeshining =
from=20
here to tomorrow, and tying up a $20,000 tape drive for 24 hours to =
backup one=20
machine.....later on, after that backup is done, it types up a physical =
drive=20
for 5 minutes to duplicate.</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#800000><SPAN=20
class=3D324114818-18052006></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#800000><SPAN=20
class=3D324114818-18052006>that's my rational=20
anyway.....</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#800000><SPAN=20
class=3D324114818-18052006></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#800000><SPAN=20
class=3D324114818-18052006>Paul</SPAN></FONT></FONT></FONT></DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#800000><SPAN=20
class=3D324114818-18052006></SPAN></FONT></FONT></FONT> </DIV>
<DIV><FONT face=3DArial><FONT size=3D2><FONT color=3D#800000><SPAN=20
class=3D324114818-18052006></SPAN></FONT></FONT></FONT> </DIV>
<DIV></DIV>
<DIV><FONT face=3DTahoma size=3D2>-----Original =
Message-----<BR><B>From:</B> Hampus=20
Lind [mailto:hampus.lind AT rps.police DOT se] <BR><B>Sent:</B> May 18, 2006 =
2:38=20
PM<BR><B>To:</B> Paul Keating;=20
veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> SV: [Veritas-bu] =
Netbackup=20
PureDisk vs datadomain / Diligent..<BR><BR></DIV></FONT>
<BLOCKQUOTE dir=3Dltr=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #800000 2px =
solid; MARGIN-RIGHT: 0px">
<DIV class=3DSection1>
<P class=3DMsoNormal><FONT face=3DWingdings color=3Dnavy =
size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Wingdings">J</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN =
lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Do you have =
any=20
thoughts on how you would use tapes in a diligent or falconstor =
environment?=20
Or are you looking at only use disk as a backup =
media?</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN =
lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">For safety =
reasons=20
one could mirror the disk and replicate the servers to different =
sites, but=20
yet I don’t know if its enough.</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN =
lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN =
lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Basically =
with these=20
products you only have one generation of a fullbackup (if you =
don’t make some=20
more of curse, but then you need more disk capacity), which means if =
you lose=20
that disk all backups are gone. Do you see any risks with this? Of =
course if=20
you mirror the disk to one or more sites you are much =
safer.</SPAN></FONT></P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN =
lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Arial"></SPAN></FONT> </P>
<P class=3DMsoNormal><FONT face=3DArial color=3Dnavy size=3D2><SPAN =
lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">I think the =
tape=20
vendors have brainwashed me!! </SPAN></FONT><FONT face=3DWingdings =
color=3Dnavy=20
size=3D2><SPAN lang=3DEN-GB=20
style=3D"FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: =
Wingdings">J</SPAN></FONT></P></DIV></BLOCKQUOTE></BODY></HTML>
=00
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