Veritas-bu

[Veritas-bu] Datacenter versus TSM

2003-03-12 12:24:39
Subject: [Veritas-bu] Datacenter versus TSM
From: Mark.Donaldson AT experianems DOT com (Donaldson, Mark)
Date: Wed, 12 Mar 2003 10:24:39 -0700
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Backing-up to a disk storage unit then duplicating to tape is very possible
- it doesn't require the vault product, either.  I've scripted it for my
frequent, small backups of Oracle archived redo logs.

I wouldn't recommend the method for large bulky backups, though, unless you
have vast tracts of unused disks for buffering.

-M

-----Original Message-----
From: Pearson, Gregory M (Getronics) [mailto:Greg.Pearson AT bp DOT com]
Sent: Wednesday, March 12, 2003 10:09 AM
To: 'stafforj AT core.afcc DOT com'; David A. Chapa
Cc: veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Datacenter versus TSM


Yeah, I am curious too, as I talked over some options with a couple of
engineers from Veritas, and we tossed around a few ideas.  However, since we
are W2K, writing to a disk pool first is a challenge due to W2K desiring a
signature on the disk.  Therefore, using a rotating disk pool for a storage
device is pretty much out of the question in the M$ world.  however, I
believe with *NIX this is far more feasible.  Back up to disk storage device
first, then dupe to tape using vaulting...of course work out the semantics
for breaking the disk off of one media server and attaching it to another...
Is this similar to your idea? 

Just an FYI on the TSM also, I am pretty sure the database has been ported
to DB/2.  There are some things that you can do to ensure the integrity of
the database, but it requires some effort.  The concept of one full and
incrementals forever is still the recommended rotation that is used, just
keep in mind that a full system recovery may require a LOT of tapes...

Greg

-----Original Message-----
From: Johnie Stafford [mailto:stafforj AT core.afcc DOT com]
Sent: Wednesday, March 12, 2003 10:49 AM
To: David A. Chapa
Cc: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Datacenter versus TSM


>>> On Wed, 12 Mar 2003 10:19:28 -0600, "David A. Chapa"
<david AT datastaff DOT com> said:

 dc> Having said that...there are some very cool things about TSM.
 dc> The coolest thing is that is caches backup to disk before
 dc> streaming to tape...or should I say SCREAM to tape.  This is
 dc> something that I would love to see VERITAS do, but I think I have
 dc> an idea that will achieve the same thing without having VERITAS'
 dc> code being changed.

Aw come on David, you can't leave us hanging like that! What's your
idea?

Johnie

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<P><FONT SIZE=3D2>Backing-up to a disk storage unit then duplicating to =
tape is very possible - it doesn't require the vault product, =
either.&nbsp; I've scripted it for my frequent, small backups of Oracle =
archived redo logs.</FONT></P>

<P><FONT SIZE=3D2>I wouldn't recommend the method for large bulky =
backups, though, unless you have vast tracts of unused disks for =
buffering.</FONT></P>

<P><FONT SIZE=3D2>-M</FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Pearson, Gregory M (Getronics) [<A =
HREF=3D"mailto:Greg.Pearson AT bp DOT com">mailto:Greg.Pearson AT bp DOT 
com</A>]</FON=
T>
<BR><FONT SIZE=3D2>Sent: Wednesday, March 12, 2003 10:09 AM</FONT>
<BR><FONT SIZE=3D2>To: 'stafforj AT core.afcc DOT com'; David A. Chapa</FONT>
<BR><FONT SIZE=3D2>Cc: veritas-bu AT mailman.eng.auburn DOT edu</FONT>
<BR><FONT SIZE=3D2>Subject: RE: [Veritas-bu] Datacenter versus =
TSM</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>Yeah, I am curious too, as I talked over some options =
with a couple of</FONT>
<BR><FONT SIZE=3D2>engineers from Veritas, and we tossed around a few =
ideas.&nbsp; However, since we</FONT>
<BR><FONT SIZE=3D2>are W2K, writing to a disk pool first is a challenge =
due to W2K desiring a</FONT>
<BR><FONT SIZE=3D2>signature on the disk.&nbsp; Therefore, using a =
rotating disk pool for a storage</FONT>
<BR><FONT SIZE=3D2>device is pretty much out of the question in the M$ =
world.&nbsp; however, I</FONT>
<BR><FONT SIZE=3D2>believe with *NIX this is far more feasible.&nbsp; =
Back up to disk storage device</FONT>
<BR><FONT SIZE=3D2>first, then dupe to tape using vaulting...of course =
work out the semantics</FONT>
<BR><FONT SIZE=3D2>for breaking the disk off of one media server and =
attaching it to another...</FONT>
<BR><FONT SIZE=3D2>Is this similar to your idea? </FONT>
</P>

<P><FONT SIZE=3D2>Just an FYI on the TSM also, I am pretty sure the =
database has been ported</FONT>
<BR><FONT SIZE=3D2>to DB/2.&nbsp; There are some things that you can do =
to ensure the integrity of</FONT>
<BR><FONT SIZE=3D2>the database, but it requires some effort.&nbsp; The =
concept of one full and</FONT>
<BR><FONT SIZE=3D2>incrementals forever is still the recommended =
rotation that is used, just</FONT>
<BR><FONT SIZE=3D2>keep in mind that a full system recovery may require =
a LOT of tapes...</FONT>
</P>

<P><FONT SIZE=3D2>Greg</FONT>
</P>

<P><FONT SIZE=3D2>-----Original Message-----</FONT>
<BR><FONT SIZE=3D2>From: Johnie Stafford [<A =
HREF=3D"mailto:stafforj AT core.afcc DOT com">mailto:stafforj AT core.afcc DOT 
com</A>=
]</FONT>
<BR><FONT SIZE=3D2>Sent: Wednesday, March 12, 2003 10:49 AM</FONT>
<BR><FONT SIZE=3D2>To: David A. Chapa</FONT>
<BR><FONT SIZE=3D2>Cc: veritas-bu AT mailman.eng.auburn DOT edu</FONT>
<BR><FONT SIZE=3D2>Subject: Re: [Veritas-bu] Datacenter versus =
TSM</FONT>
</P>
<BR>

<P><FONT SIZE=3D2>&gt;&gt;&gt; On Wed, 12 Mar 2003 10:19:28 -0600, =
&quot;David A. Chapa&quot;</FONT>
<BR><FONT SIZE=3D2>&lt;david AT datastaff DOT com&gt; said:</FONT>
</P>

<P><FONT SIZE=3D2>&nbsp;dc&gt; Having said that...there are some very =
cool things about TSM.</FONT>
<BR><FONT SIZE=3D2>&nbsp;dc&gt; The coolest thing is that is caches =
backup to disk before</FONT>
<BR><FONT SIZE=3D2>&nbsp;dc&gt; streaming to tape...or should I say =
SCREAM to tape.&nbsp; This is</FONT>
<BR><FONT SIZE=3D2>&nbsp;dc&gt; something that I would love to see =
VERITAS do, but I think I have</FONT>
<BR><FONT SIZE=3D2>&nbsp;dc&gt; an idea that will achieve the same =
thing without having VERITAS'</FONT>
<BR><FONT SIZE=3D2>&nbsp;dc&gt; code being changed.</FONT>
</P>

<P><FONT SIZE=3D2>Aw come on David, you can't leave us hanging like =
that! What's your</FONT>
<BR><FONT SIZE=3D2>idea?</FONT>
</P>

<P><FONT SIZE=3D2>Johnie</FONT>
</P>

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