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Yeah, for me the biggest weakness of the NBU DSSUs.
"Paul Keating" <pkeating AT bank-banque-canada DOT ca>
23/03/2006 15:48
To: <andrew.x.smith AT jpmchase DOT com>
cc: <veritas-bu AT mailman.eng.auburn DOT edu>
Subject: RE: [Veritas-bu] on the subject of disk based
backups....
excellent info...Now that you mention it....my one small DSSU I have
configured to offload to a specific tape pool, so I should have known
that.
That definately sways me in the direction of VTL then.
-----Original Message-----
From: andrew.x.smith AT jpmchase DOT com [mailto:andrew.x.smith AT jpmchase DOT
com]
Sent: March 23, 2006 8:30 AM
To: Paul Keating
Cc: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] on the subject of disk based backups....
Hi Paul,
from my experience what you say about DSSU is incorrect, a single DSSU
cannot stage the data off to multiple tape tape pools - if you have a
requirement to stage to different tape pools you need to have a at least
one DSSU per tape pool,
cheers Andy.
"Paul Keating" <pkeating AT bank-banque-canada DOT ca>
Sent by: veritas-bu-admin AT mailman.eng.auburn DOT edu
23/03/2006 13:05
To: <veritas-bu AT mailman.eng.auburn DOT edu>
cc:
Subject: [Veritas-bu] on the subject of disk based
backups....
I'm also interested in thoughts regarding VTL vs DSSU.
DSSU interests me mostly because I can write multiple jobs at once without
any regard for tape pool, mpx or not, retention, etc.....
...then it all gets sorted out to appropriate tapes during the destaging
VTL still presents itself to NBU as a tape, so each virtual tape drive
must be licensed with Veritas, in additional to the physical tape drives
(unless the VTL is run inline, though there could be issues there
regarding estimated compression, etc.)
Just a couple things off the top of my head.
Just wondering who is using DSSU, adn who is using VTL, adn why you made
that choice....ie.what were the key requirements for your environment that
made one option better than the other.
Paul
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<br><font size=2 face="sans-serif">Yeah, for me the biggest weakness of the NBU
DSSUs.</font>
<br>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td>
<td><font size=1 face="sans-serif"><b>"Paul Keating" <pkeating AT
bank-banque-canada DOT ca></b></font>
<p><font size=1 face="sans-serif">23/03/2006 15:48</font>
<br>
<td><font size=1 face="Arial"> </font>
<br><font size=1 face="sans-serif"> To:
<andrew.x.smith AT jpmchase DOT com></font>
<br><font size=1 face="sans-serif"> cc:
<veritas-bu AT mailman.eng.auburn DOT edu></font>
<br><font size=1 face="sans-serif"> Subject:
RE: [Veritas-bu] on the subject of disk based
backups....</font></table>
<br>
<br>
<br><font size=2 color=#800000 face="Arial">excellent info...Now that you
mention it....my one small DSSU I have configured to offload to a specific tape
pool, so I should have known that.</font>
<br><font size=2 color=#800000 face="Arial">That definately sways me in the
direction of VTL then.</font>
<br><font size=2 face="Tahoma">-----Original Message-----<b><br>
From:</b> andrew.x.smith AT jpmchase DOT com [mailto:andrew.x.smith AT jpmchase
DOT com] <b><br>
Sent:</b> March 23, 2006 8:30 AM<b><br>
To:</b> Paul Keating<b><br>
Cc:</b> veritas-bu AT mailman.eng.auburn DOT edu<b><br>
Subject:</b> Re: [Veritas-bu] on the subject of disk based backups....<br>
</font>
<br><font size=2 face="sans-serif"><br>
Hi Paul,</font><font size=3 face="Times New Roman"> <br>
</font><font size=2 face="sans-serif"><br>
from my experience what you say about DSSU is incorrect, a single DSSU
cannot stage the data off to multiple tape tape pools - if you have a
requirement to stage to different tape pools you need to have a at least one
DSSU per tape pool,</font><font size=3 face="Times New Roman"> <br>
</font><font size=2 face="sans-serif"><br>
cheers
Andy.</font><font size=3 face="Times New Roman"> <br>
<br>
<br>
<br>
</font>
<table width=100%>
<tr valign=top>
<td width=2%>
<td width=46%><font size=1 face="sans-serif"><b>"Paul Keating"
<pkeating AT bank-banque-canada DOT ca></b></font><font size=3
face="Times New Roman"> </font><font size=1 face="sans-serif"><br>
Sent by: veritas-bu-admin AT mailman.eng.auburn DOT edu</font><font size=3
face="Times New Roman"> </font>
<p><font size=1 face="sans-serif">23/03/2006 13:05</font><font size=3
face="Times New Roman"> </font>
<td width=50%><font size=1 face="Arial">
</font><font size=1 face="sans-serif"><br>
To: <veritas-bu AT
mailman.eng.auburn DOT edu></font><font size=3 face="Times New Roman">
</font><font size=1 face="sans-serif"><br>
cc: </font><font size=3
face="Times New Roman"> </font><font size=1 face="sans-serif"><br>
Subject: [Veritas-bu] on
the subject of disk based backups....</font></table>
<br><font size=3 face="Times New Roman"><br>
<br>
</font><font size=2 face="Times New Roman"><br>
I'm also interested in thoughts regarding VTL vs DSSU.</font><font size=3
face="Times New Roman"> </font>
<p><font size=2 face="Arial">DSSU interests me mostly because I can write
multiple jobs at once without any regard for tape pool, mpx or not, retention,
etc.....</font><font size=3 face="Times New Roman"> </font>
<p><font size=2 face="Arial">...then it all gets sorted out to appropriate
tapes during the destaging</font><font size=3 face="Times New Roman"> </font>
<p><font size=2 face="Arial">VTL still presents itself to NBU as a tape, so
each virtual tape drive must be licensed with Veritas, in additional to the
physical tape drives (unless the VTL is run inline, though there could be
issues there regarding estimated compression, etc.) </font>
<p><font size=2 face="Arial">Just a couple things off the top of my
head.</font><font size=3 face="Times New Roman"> </font>
<p><font size=2 face="Arial">Just wondering who is using DSSU, adn who is using
VTL, adn why you made that choice....ie.what were the key requirements for your
environment that made one option better than the other.</font><font size=3
face="Times New Roman"> </font>
<p><font size=2 face="Arial">Paul</font><font size=3 face="Times New Roman">
</font>
<p>
<p>
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