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[Veritas-bu] Disk Based Backup
2004-06-14 15:03:37
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Disk staging is good for the right reasons and for the right backups,
but everything going to disk for backup is like paying one credit card
off with another credit card. At some point you need to get some or all
of that data on tape for portability. =20
=20
If what you are trying to do is address reliability, speed and
portability, then look at the purposed built backup devices such as
Virtual Tape Libraries that support an embedded path to tape. They will
provide the speed of disk, RAID reliability through the convenient
presentation of tape and tape libraries. There are quite a few on the
market now which is great for you because you have so many
choices...just make sure you are choosing for the right reasons.
=20
My suggestion when considering to use "disk" in your backup
infrastructure is to FIRST identify the top three to five reasons you
are looking to address your backup problems with "disk". =20
=20
Second ask yourself if tape is an important factor for your protection
strategy? If tape is not important to your particular strategy there
are many vendor solutions out there that imitate tape but end in disk.
Otherwise, the list narrows considerably as you find those solutions
that support an embedded path to tape.
=20
However, if tape is important then your paradigm for backup shifts a
little bit to the number of hours needed to create tapes during the
"export or eject" window with the VTL's (that is time to create physical
tapes via the embedded path to tape). So doing the math helps a ton
here.
=20
Thirdly and probably most importantly, does it appear on VERITAS'
Support matrix?
=20
Create a punch list and ask questions...hard questions of the
vendors...and get the right solution for the right reasons.
=20
David
=20
BTW: you can check ADIC's offering at http://www.adic.com/gopathlightvx
=20
David A. Chapa * Technical Advisor * ADIC * 720.249.5836 * 720.272.8452
cell * david.chapa AT adic DOT com <mailto:david.chapa AT adic DOT com>=20
HIGH PERFORMANCE, SCALABLE, RELIABLE - http://www.adic.com/gopathlightvx
<http://www.adic.com/gopathlightvx>=20
=20
The contents of this e-mail are intended for the named addressee only.
It contains information that may be confidential. Unless you are the
named addressee or an authorized designee, you may not copy or use it,
or disclose it to anyone else. If you received it in error please notify
us immediately and then destroy it.=20
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<div class=3DSection1>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Disk staging is good for the right =
reasons
and for the right backups, but everything going to disk for backup is =
like
paying one credit card off with another credit card.<span
style=3D'mso-spacerun:yes'> </span>At some point you need to get =
some or all
of that data on tape for portability.<span =
style=3D'mso-spacerun:yes'>
</span><o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>If what you are trying to do is =
address
reliability, speed and portability, then look at the purposed built =
backup
devices such as Virtual Tape Libraries that support an embedded path to
tape.<span style=3D'mso-spacerun:yes'> </span>They will provide =
the speed
of disk, RAID reliability through the convenient presentation of tape =
and tape
libraries.<span style=3D'mso-spacerun:yes'> </span>There are quite =
a few on
the market now which is great for you because you have so many
choices…just make sure you are choosing for the right =
reasons.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>My suggestion when considering to =
use
“disk” in your backup infrastructure is to FIRST identify =
the top
three to five reasons you are looking to address your backup problems =
with
“disk”.<span style=3D'mso-spacerun:yes'> =
</span><o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Second ask yourself if tape is an
important factor for your protection strategy?<span
style=3D'mso-spacerun:yes'> </span>If tape is not important to =
your
particular strategy there are many vendor solutions out there that =
imitate tape
but end in disk.<span style=3D'mso-spacerun:yes'> =
</span>Otherwise, the
list narrows considerably as you find those solutions that support an =
embedded
path to tape.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>However, if tape is important then =
your
paradigm for backup shifts a little bit to the number of hours needed to =
create
tapes during the “export or eject” window with the <span
class=3DSpellE>VTL’s</span> (that is time to create physical tapes =
via the
embedded path to tape).<span style=3D'mso-spacerun:yes'> </span>So =
doing
the math helps a ton here.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Thirdly and probably most =
importantly,
does it appear on VERITAS’ Support =
matrix?<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Create a punch list and ask
questions...hard questions of the vendors…and get the right =
solution for
the right reasons.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>David<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>BTW:<span =
style=3D'mso-spacerun:yes'>
</span>you can check <span class=3DSpellE>ADIC’s</span> offering =
at <a
href=3D"http://www.adic.com/gopathlightvx";>http://www.adic.com/gopathligh=
tvx</a><o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p><b><font size=3D1 color=3Dnavy face=3D"Times New Roman"><span =
style=3D'font-size:
7.5pt;color:navy;font-weight:bold;mso-no-proof:yes'>David A. Chapa =
</span></font></b><font
size=3D1 color=3Dnavy face=3DSymbol><span =
style=3D'font-size:7.5pt;font-family:Symbol;
color:navy;mso-no-proof:yes'>½</span></font><font size=3D1 =
color=3Dnavy><span
style=3D'font-size:7.5pt;color:navy;mso-no-proof:yes'> Technical Advisor =
</span></font><font
size=3D1 color=3Dnavy face=3DSymbol><span =
style=3D'font-size:7.5pt;font-family:Symbol;
color:navy;mso-no-proof:yes'>½</span></font><font size=3D1 =
color=3D"#999999"><span
style=3D'font-size:7.5pt;color:#999999;mso-no-proof:yes'> =
</span></font><b><font
size=3D1 color=3Dred><span =
style=3D'font-size:7.5pt;color:red;font-weight:bold;
mso-no-proof:yes'>ADIC</span></font></b><font size=3D1 =
color=3D"#999999"><span
style=3D'font-size:7.5pt;color:#999999;mso-no-proof:yes'> =
</span></font><font
size=3D1 color=3Dnavy face=3DSymbol><span =
style=3D'font-size:7.5pt;font-family:Symbol;
color:navy;mso-no-proof:yes'>½</span></font><font size=3D1 =
color=3Dnavy><span
style=3D'font-size:7.5pt;color:navy;mso-no-proof:yes'> 720.249.5836 =
</span></font><font
size=3D1 color=3Dnavy face=3DSymbol><span =
style=3D'font-size:7.5pt;font-family:Symbol;
color:navy;mso-no-proof:yes'>½ 720.272.8452 =
</span></font><em><i><font
size=3D1 color=3Dnavy face=3D"Times New Roman"><span =
style=3D'font-size:7.5pt;
color:navy;mso-no-proof:yes'>cell</span></font></i></em><font size=3D1
color=3Dnavy><span =
style=3D'font-size:7.5pt;color:navy;mso-no-proof:yes'> =
</span></font><font
size=3D1 color=3Dnavy face=3DSymbol><span =
style=3D'font-size:7.5pt;font-family:Symbol;
color:navy;mso-no-proof:yes'>½ </span></font><em><i><font =
size=3D1
color=3Dnavy face=3D"Times New Roman"><span =
style=3D'font-size:7.5pt;color:navy;
mso-no-proof:yes'> </span></font></i></em><font color=3Dnavy><span
style=3D'color:navy;mso-no-proof:yes'><a =
href=3D"mailto:david.chapa AT adic DOT com"><font
size=3D1><span =
style=3D'font-size:7.5pt'>david.chapa AT adic DOT
com</span></font></a><o:p></o:=
p></span></font></p>
<p><font size=3D1 color=3Dnavy face=3D"Times New Roman"><span =
style=3D'font-size:7.5pt;
color:navy;mso-no-proof:yes'>HIGH PERFORMANCE, SCALABLE, RELIABLE =
- </span></font><font
color=3Dnavy><span style=3D'color:navy;mso-no-proof:yes'><a
href=3D"http://www.adic.com/gopathlightvx";><font size=3D1><span =
style=3D'font-size:
7.5pt'>http://www.adic.com/gopathlightvx</span></font></a></span></font><=
o:p></o:p></p>
</div>
<blockquote =
style=3D'margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
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<P><B><FONT SIZE=3D2 FACE=3D"Arial">The contents of this e-mail are =
intended for the named addressee only. It contains information that may =
be confidential. Unless you are the named addressee or an authorized =
designee, you may not copy or use it, or disclose it to anyone else. If =
you received it in error please notify us immediately and then destroy =
it.</FONT></B> </P>
<BR>=00
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