Veritas-bu

[Veritas-bu] RE: ndmp/netapp, dedicated tape drive?

2004-01-28 17:06:46
Subject: [Veritas-bu] RE: ndmp/netapp, dedicated tape drive?
From: neil AT mbari DOT org (Conner, Neil)
Date: Wed, 28 Jan 2004 14:06:46 -0800
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A 3-way NDMP configuration allows multiple NDMP servers to share a single 
storage device that's physically connected to just one of them.  It's part of 
the NDMP protocol.  Since the process is driven from the Netbackup server, 
that's where they come up with the 3-way connotation.  Works great.
 
Neil

-----Original Message-----
From: Andrew Wilkin [mailto:Andrew.Wilkin AT lands.nsw.gov DOT au]
Sent: Wednesday, January 28, 2004 1:36 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] RE: ndmp/netapp, dedicated tape drive?


Hi Dave,
 
I currently use a StoraeTek 9714 to backup my NetApp system. Yes you will need 
to have a dedicated drive attached to the NetApp. If your library only has two 
drives, then effectively you now only have one drive for all your client 
systems and one for the NetApp system. Also to consider, the Nightly backup is 
still running and an urgent restore is required - you only have a single drive 
to do both! (see below for a possible work around for the restore).
 
Another method to backup the Filer, could be via NFS mounts and not using NDMP, 
 and therefore not 'losing' a drive to the Filer, BUT  considering the amount 
of data that the Filers store I wouldn't consider this option, draging many 
GBytes of data over the network !!!
 
I'm unsure what you mean by "3-way ndmp backups" ?
 
Also if you backup data via NDMP from the NetApp, you are will be restricted in 
it's recovery. It must be restored via NDMP, this can be a problem not being 
able to restore to another non-NDMP client machine!! (HOWEVER - it is possible 
to recover an NDMP backup via a SUN system, which you have). I have got some 
notes on how to restore NDMP backups via a SUN system.
 
I have a dedicated drive to my NetApp , but I also have 4 other drives I can 
use. I think that the NetApps are "the best thing since sliced bread", fast, 
reliable, easy to manage ......
 
Hope this helps. 

Regards 

Andrew Wilkin
Computer Systems Analyst 

Department of Lands
Panorama Ave
BATHURST, NSW, 2795, AUSTRALIA 

Ph: (02) 6332 8397
Fx: (02) 6332 8457
E-mail: Andrew.Wilkin AT lands.nsw.gov DOT au
WEB: www.lpi.nsw.gov.au < http://www.lpi.nsw.gov.au 
<http://www.lpi.nsw.gov.au/> > 

 





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<DIV><SPAN class=886545321-28012004><FONT size=2>A 3-way NDMP 
configuration&nbsp;allows multiple NDMP&nbsp;servers to&nbsp;share 
a&nbsp;single 
storage device&nbsp;that's physically connected&nbsp;to&nbsp;just one&nbsp;of 
them.&nbsp; It's part of the NDMP protocol.&nbsp; Since the&nbsp;process is 
driven from the&nbsp;Netbackup server, that's where they come up with 
the&nbsp;3-way connotation.&nbsp; Works great.</FONT></SPAN></DIV>
<DIV><SPAN class=886545321-28012004><FONT size=2></FONT></SPAN>&nbsp;</DIV>
<DIV><SPAN class=886545321-28012004><FONT size=2>Neil</FONT></SPAN></DIV>
<BLOCKQUOTE>
  <DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma 
  size=2>-----Original Message-----<BR><B>From:</B> Andrew Wilkin 
  [mailto:Andrew.Wilkin AT lands.nsw.gov DOT au]<BR><B>Sent:</B> Wednesday, 
January 28, 
  2004 1:36 PM<BR><B>To:</B> 
  veritas-bu AT mailman.eng.auburn DOT edu<BR><B>Subject:</B> [Veritas-bu] RE: 
  ndmp/netapp, dedicated tape drive?<BR><BR></FONT></DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004>Hi Dave,</SPAN></FONT></DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004></SPAN></FONT>&nbsp;</DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004>I currently use a StoraeTek 
  9714 to backup my NetApp system. Yes you will need to have a dedicated drive 
  attached to the NetApp. If your library only has two drives, then effectively 
  you now only have one drive for all your client systems and one for the 
NetApp 
  system. Also to consider, the Nightly backup is still running and an urgent 
  restore is required - you only have a single drive to do both! (see below for 
  a possible work around for the restore).</SPAN></FONT></DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004></SPAN></FONT>&nbsp;</DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004>Another method to backup the 
  Filer, could be via NFS mounts and not using NDMP,&nbsp; and therefore not 
  'losing' a drive to the Filer, BUT&nbsp; considering the amount of data that 
  the Filers store I wouldn't consider this option, draging many GBytes of data 
  over the network !!!</SPAN></FONT></DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004></SPAN></FONT>&nbsp;</DIV>
  <DIV><SPAN class=611101321-28012004><FONT size=2>I'm unsure what you mean by 
  "</FONT><FONT size=2>3-way<SPAN class=611101321-28012004> </SPAN>ndmp 
backups" 
  ?</FONT></SPAN></DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004></SPAN></FONT>&nbsp;</DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004>Also if you backup data via 
  NDMP from the NetApp, you are will be restricted in it's recovery. It must be 
  restored via NDMP, this can be a problem not being able to restore to another 
  non-NDMP client machine!! (HOWEVER - it is possible to recover an NDMP backup 
  via a SUN system, which you have). I have got some notes on how to restore 
  NDMP backups via a SUN system.</SPAN></FONT></DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004></SPAN></FONT>&nbsp;</DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004>I have a dedicated drive to 
  my NetApp , but I also have 4 other drives I can use. I think that the 
NetApps 
  are "the best thing since sliced bread", fast, reliable, easy to manage 
  ......</SPAN></FONT></DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004></SPAN></FONT>&nbsp;</DIV>
  <DIV><FONT size=2><SPAN class=611101321-28012004><FONT size=2><SPAN 
  class=611101321-28012004>Hope this helps. </SPAN></FONT></SPAN></FONT></DIV>
  <P><FONT size=2>Regards</FONT> </P>
  <P><FONT color=#000080 size=2>Andrew Wilkin</FONT><BR><FONT size=2>Computer 
  Systems Analyst</FONT> </P>
  <P><FONT size=2>Department</FONT> <FONT size=2>of Lands</FONT><BR><FONT 
  size=2>Panorama Ave</FONT><BR><FONT size=2>BATHURST, NSW, 2795, 
  AUSTRALIA</FONT> </P>
  <P><FONT size=2>Ph: (02) 6332 8397</FONT><BR><FONT size=2>Fx: (02) 6332 
  8457</FONT><BR><FONT size=2>E-mail: Andrew.Wilkin@</FONT><FONT 
  size=2>lands</FONT><FONT size=2>.nsw.gov.au</FONT><BR><FONT 
  size=2>WEB:<U></U></FONT><U> <FONT color=#0000ff size=2>www.lpi.nsw.gov.au 
  &lt;<A href="http://www.lpi.nsw.gov.au/"; 
  target=_blank>http://www.lpi.nsw.gov.au</A>&gt;</FONT></U> </P>
  <DIV>&nbsp;</DIV>
  <P></P><FONT 
  
size=3><BR><BR>***************************************************************<BR>This
 
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  information. If you are not the <BR>intended recipient, please delete it and 
  notify the sender. <BR>Views expressed in this message are those of the 
  <BR>individual sender, and are not necessarily the views of <BR>the 
Department 
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