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=20
One thing to consider when utilizing a disk storage unit in NetBackup (3.4.=
1) is that the images cannot be imported if the catalog is lost or corrupte=
d. Any backups since the last good db backup are irretrievable.
=20
=20
Melinda Orms
Evans & Sutherland
-----Original Message-----
From: Scott Jacobson [mailto:SJACOBSO AT novell DOT com]
Sent: Thursday, May 22, 2003 8:49 AM
To: Veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Looking to backup data to Disk vs. Tape(DX30)
Eliott,
=20
We are taking delivery on our first Quantum DX30 evaluation unit next week =
and will probably migrate all day-to-day backups operations to those system=
s using 6+ M2500's for archiving.
=20
What I like about the DX30 is that with NetBackup, it emulates a P1000 tape=
library.
=20
I'd be interested in hearing from anyone who has evaluated or implemented t=
he DX30 in their environment using NetBackup DataCenter.
=20
Thanks,
=20
Scott Jacobson
NetBackup Systems Administration
Data Retention and Storage Management
I. S. & T. Provo Operations
sjacobso AT novell DOT com
Desk Direct: 801-861-7668
Toll Free: 800-453-1267 Ext. 1-7668
Cell: 801-560-6891
Novell, Inc., the leading provider of Net business solutions
www.novell.com
>>> "Donaldson, Mark" <Mark.Donaldson AT experianems DOT com> 5/22/2003 6:49:40
>>> AM=
>>>
I've been backing up to disk for a while. The disk storage unit shares the
single master/media server that services my entire environment. You don't
need a special media server for this purpose but the media server has to
have access to the disk, DAS, SAN, NAS or similar.
I use to for the frequent small backups that I do for my Oracle archived
redo logs. I have a script that wakes every four hours to duplicate the
images from disk to tape, then expires the disk copy. This aggregates my
small backups & minimizes tape movement & delay.
The only problem I've had is that tape drives compress automatically while
disks do not. Client-side compression isn't that good & loads the CPU too
much to use. The images on disk, therefore, are full-sized.
HTH - M
We have been testing backup to disk, and we only have one master/media
server and it works fine. (also Win2K)
=20
The only reason we are looking into disk-backup is because we have some ver=
y
very slow backups and we want to keep them away from allocation tape drives
and holding on to them for hours.
=20
In general I think that backup to disk is too slow and unflexible (dependin=
g
on your tapedrives and library)
=20
Our media server is directly connected to the disk drives (via SAN). If it
will work over LAN I don't know.
=20
The only problem we have seen is that it can be a little difficult and
unflexible to manage the backups on disk.
=20
/johnny
-----Original Message-----
From: Barlow, Eliott [ mailto:ebarlow AT usatoday DOT com]
Sent: Wednesday, May 21, 2003 10:56 PM
To: Veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Looking to backup data to Disk vs. Tape
Environment-W2K Media/Master Server backing up about 500GB per night.
Does anyone have suggestions or comments about backing up data to disk?
Would I need a media server allocated just for disk backups?=20
Would this media server have to be directly attached to this disk device?
What are some problems users have experienced with disk backup?
Eliott Barlow
Operations Systems Analyst
USA Today
_______________________________________________
Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
_______________________________________________
Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
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<DIV><SPAN class=3D682041515-22052003></SPAN> </DIV>
<DIV><SPAN class=3D682041515-22052003>One thing to consider=20
when utilizing a disk storage unit in NetBackup (3.4.1) is t=
hat=20
the images cannot be imported if the catalog is lost or corrupted. An=
y=20
backups since the last good db backup are irretrievable.</SPAN></DIV>
<DIV><SPAN class=3D682041515-22052003></SPAN> </DIV>
<DIV><SPAN class=3D682041515-22052003></SPAN> </DIV>
<DIV><SPAN class=3D682041515-22052003>Melinda Orms</SPAN></DIV>
<DIV><SPAN class=3D682041515-22052003>Evans & Sutherland</SPAN></DIV>
<BLOCKQUOTE dir=3Dltr style=3D"MARGIN-RIGHT: 0px">
<DIV class=3DOutlookMessageHeader dir=3Dltr align=3Dleft>-----Original
Message-----<BR><B>From:</B> Scott Jacobson=20
[mailto:SJACOBSO AT novell DOT com]<BR><B>Sent:</B> Thursday, May 22, 2003
8:49
AM<BR><B>To:</B> Veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B>
RE:=
=20
[Veritas-bu] Looking to backup data to Disk vs. Tape(DX30)<BR><BR></DIV>
<DIV>Eliott,</DIV>
<DIV> </DIV>
<DIV>We are taking delivery on our first Quantum DX30 evaluation unit nex=
t=20
week and will probably migrate all day-to-day backups operations to those=
=20
systems using 6+ M2500's for archiving.</DIV>
<DIV> </DIV>
<DIV>What I like about the DX30 is that with NetBackup, it emulates a P10=
00=20
tape library.</DIV>
<DIV> </DIV>
<DIV>I'd be interested in hearing from anyone who has evaluated or implem=
ented=20
the DX30 in their environment using NetBackup DataCenter.</DIV>
<DIV> </DIV>
<DIV>Thanks,</DIV>
<DIV> </DIV>
<DIV>Scott Jacobson<BR>NetBackup Systems Administration<BR>Data Retention=
and=20
Storage Management<BR>I. S. & T. Provo Operations<BR><A=20
href=3D"mailto:sjacobso AT novell DOT com">sjacobso AT novell DOT
com</A><BR>Desk=20
Direct: 801-861-7668<BR>Toll=20
Free: 800-453-1267 Ext.=20
1-7668<BR>Cell: &nbs=
p; =20
801-560-6891<BR>Novell, Inc., the leading provider of Net business=20
solutions<BR><A=20
href=3D"http://www.novell.com";>www.novell.com</A><BR><BR>>>>=20
"Donaldson, Mark" <Mark.Donaldson AT experianems DOT com> 5/22/2003
6:49:4=
0 AM=20
>>><BR></DIV>
<DIV>I've been backing up to disk for a while. The disk storage uni=
t=20
shares the<BR>single master/media server that services my entire=20
environment. You don't<BR>need a special media server for this purp=
ose=20
but the media server has to<BR>have access to the disk, DAS, SAN, NAS or
similar.<BR><BR>I use to for the frequent small backups that I do for my
Oracle archived<BR>redo logs. I have a script that wakes every four=
=20
hours to duplicate the<BR>images from disk to tape, then expires the disk=
=20
copy. This aggregates my<BR>small backups & minimizes tape move=
ment=20
& delay.<BR><BR>The only problem I've had is that tape drives compres=
s=20
automatically while<BR>disks do not. Client-side compression isn't =
that=20
good & loads the CPU too<BR>much to use. The images on disk,
therefore, are full-sized.<BR><BR>HTH - M<BR></DIV>
<DIV>We have been testing backup to disk, and we only have one=20
master/media<BR>server and it works fine. (also Win2K)</DIV>
<DIV> </DIV>
<DIV>The only reason we are looking into disk-backup is because we have s=
ome=20
very<BR>very slow backups and we want to keep them away from allocation t=
ape=20
drives<BR>and holding on to them for hours.</DIV>
<DIV> </DIV>
<DIV>In general I think that backup to disk is too slow and unflexible
(depending<BR>on your tapedrives and library)</DIV>
<DIV> </DIV>
<DIV>Our media server is directly connected to the disk drives (via SAN).=
If=20
it<BR>will work over LAN I don't know.</DIV>
<DIV> </DIV>
<DIV>The only problem we have seen is that it can be a little difficult
and<BR>unflexible to manage the backups on disk.</DIV>
<DIV> </DIV>
<DIV>/johnny<BR><BR>-----Original Message-----<BR>From: Barlow, Eliott [<=
A=20
href=3D"mailto:ebarlow AT usatoday DOT com]">mailto:ebarlow AT usatoday DOT
com]</A><BR=
>Sent:=20
Wednesday, May 21, 2003 10:56 PM<BR>To:=20
Veritas-bu AT mailman.eng.auburn DOT edu<BR>Subject: [Veritas-bu] Looking to
bac=
kup=20
data to Disk vs. Tape<BR><BR><BR>Environment-W2K Media/Master Server back=
ing=20
up about 500GB per night.<BR><BR>Does anyone have suggestions or comments=
=20
about backing up data to disk? <BR><BR>Would I need a media server
allocated just for disk backups? <BR><BR>Would this media server have to =
be=20
directly attached to this disk device?<BR><BR>What are some problems user=
s=20
have experienced with disk backup?<BR><BR><BR>Eliott Barlow<BR>Operations=
=20
Systems Analyst<BR>USA=20
Today<BR><BR><BR><BR>_______________________________________________<BR>V=
eritas-bu=20
maillist - Veritas-bu AT mailman.eng.auburn DOT edu<BR><A=20
href=3D"http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu";>http:/=
/mailman.eng.auburn.edu/mailman/listinfo/veritas-bu</A><BR>________________=
_______________________________<BR>Veritas-bu=20
maillist - Veritas-bu AT mailman.eng.auburn DOT edu<BR><A=20
href=3D"http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu";>http:/=
/mailman.eng.auburn.edu/mailman/listinfo/veritas-bu</A><BR></DIV></BLOCKQUO=
TE></BODY></HTML>
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