Veritas-bu

Re: [Veritas-bu] Netbackup 6.5 - disk staging Units

2007-10-18 08:26:27
Subject: Re: [Veritas-bu] Netbackup 6.5 - disk staging Units
From: "rcarlisle" <rcarlisle AT serverwarecorp DOT com>
To: "'Mellor, Adam A.'" <Adam.Mellor AT woodside.com DOT au>, "'Curtis Preston'" <cpreston AT glasshouse DOT com>, "'Kevin Whittaker'" <Kevin.Whittaker AT syniverse DOT com>, <VERITAS-BU AT mailman.eng.auburn DOT edu>
Date: Thu, 18 Oct 2007 08:05:45 -0400
Adam,

Nope you're right which reminds why I don't usually respond to these things
when I have been up all night working support issues and haven't had my
first cup of coffee yet!  I was thinking too literal.  Yes, you could easily
do that. 


 
 
Reneé Carlisle 
ServerWare Corporation
-----Original Message-----
From: Mellor, Adam A. [mailto:Adam.Mellor AT woodside.com DOT au] 
Sent: Thursday, October 18, 2007 7:48 AM
To: rcarlisle; Curtis Preston; Kevin Whittaker;
VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Netbackup 6.5 - disk staging Units

I'm not yes seeing this as a problem,

Doesn't netbackup Storage units consider all available drives, of a
particular density eg HCART2, for the library eg ACS 0, that are configured
in netbackup say 10 of them, fair game for any storage unit.

if the storage unit "staging_A" is configured for a maximum of 4 drives then
that's all it can use,
If the storage unit "backups_C" is configured for a maximum of 10 drives,
then it will use all of the drives.

Should the priority configured for staging (99999 by default isnt it?) mean
that it gets it's 4 drives when needed and backups can use them when not ?

Adam.

-----Original Message-----
From: rcarlisle [mailto:rcarlisle AT serverwarecorp DOT com] 
Sent: Thursday, 18 October 2007 7:36 PM
To: 'Curtis Preston'; 'Kevin Whittaker'; Mellor, Adam A.;
VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Netbackup 6.5 - disk staging Units

 I can think of an issue.  When you create a storage unit, you need to
define what drives are in it.  Let's say I have a tape library with 10
drives, but I only want to use 4 of them for disk staging.  If I create a
storage unit, I am limited to those four physical drives.  If I want to
leave those drives also available for backups - storage unit with 10 drives
in it- A backup may pick on of my staging unit drives, and now I am limited
to three drives even though there may be available drives in the library,
just not defined in that particular storage unit.  The touch file allowed
for greater flexibility for staging to pick any four of the ten drives
available.


 
 
Reneé Carlisle
ServerWare Corporation






-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Curtis
Preston
Sent: Thursday, October 18, 2007 4:07 AM
To: Kevin Whittaker; Mellor, Adam A.; VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Netbackup 6.5 - disk staging Units

What's wrong with creating an additional storage unit?

---
W. Curtis Preston
Backup Blog @ www.backupcentral.com
VP Data Protection, GlassHouse Technologies 

-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Kevin
Whittaker
Sent: Wednesday, October 17, 2007 7:47 AM
To: Mellor, Adam A.; VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Netbackup 6.5 - disk staging Units

I am scheduled to upgrade from 5.1 to 6.5 and would be very interested
in the answer to this question.  I checked the documentation and in the
Veritas NetBackup 6.5 Admin Guide for UNIX and Linux Vol 1 had the
answer... I think

On page 250:  It says that the final destination storage unit will
control the "maximum concurrent write drives".  That explanation was on
page 231.

This is not good!  I do not want to have to create a new storage unit to
control the # of drives that the copy from disk to tape will use.

Has anybody found out anything more on this issue?

Kevin 

-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Mellor,
Adam A.
Sent: Wednesday, October 17, 2007 7:32 AM
To: VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Netbackup 6.5 - disk staging Units

Good evening,

I have another NBU 6.5 Question,

I have just completed my 5.1 to 6.5 upgrade, no real drama's with the
upgrade.

I am monitoring the progress of the scheduled backups to see how much
carnage there is.

My disk staging units are using all of the available tape drives,
previously in NBU 5.1 I was able to limit this using the
MAX_STAGING_JOBS touchfile.

Is there some way to limit the number of jobs for de-staging disk
backups in 6.5 ?

Thanks,

Back to monitoring logs...

Adam Mellor
Senior Unix Support Analyst
CF IT TECHNOLOGY SERVICES
Woodside Energy Ltd.

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