Re: [Veritas-bu] Media Server offline for disk

The high watermark serves two purposes - (1) It prevents any new backup jobs 
from being sent to the STU, and (2) It triggers image expirations on the STU. 
The function #1 is not applicable to Disk Staging STU; however, the 
functionality #2 should work for it. So, if you lower HWM for the Disk Staging 
STU, it would trigger image expirations earlier so that when the backup jobs 
are sent to the STU, NetBackup does not have to expire images then (potentially 
saving time for the backup).

Hope this helps. I agree, the documentation is little unclear on this.

/Girish


----- Original Message ----
From: WALLEBROEK Bart <Bart.WALLEBROEK AT swift DOT com>
To: Girish Jorapurkar <girishsj AT yahoo DOT com>; "veritas-bu AT 
mailman.eng.auburn DOT edu" <veritas-bu AT mailman.eng.auburn DOT edu>
Sent: Thursday, July 16, 2009 8:16:44 AM
Subject: RE: [Veritas-bu] Media Server offline for disk

Extract from the NetBackup help file:

        The high water mark does not apply to storage units that are used for 
basic disk staging. For more information about this type of disk staging, see 
Basic disk staging limitations.

Best Regards,
Bart WALLEBROEK
Backup admin
Enterprise Applications Delivery - Infrastructure Management
S.W.I.F.T. SCRL

>-----Original Message-----
>From: Girish Jorapurkar [mailto:girishsj AT yahoo DOT com]
>Sent: Thursday, July 16, 2009 3:07 PM
>To: WALLEBROEK Bart; Martin, Jonathan; veritas-bu AT mailman.eng.auburn DOT edu
>Subject: Re: [Veritas-bu] Media Server offline for disk
>
>
>There you go - setting a lower value to RE_READ_INTERVAL, I belive, is the 
>problem. NetBackup will mark a media
>server "offline for disk" if does not receive heartbeat in 30 seconds, in your 
>case. And, that applies to all media
>servers - which can be hard to meet in a very busy system/time. So, I suggest 
>that you revert RE_READ_INTERVAL to
>default (5 mins = 300 seconds)
>
>To address your original concern, you should be able to change/configure 
>high-water mark (upper threshold) for a
>BasicDisk STU using GUI/CLI.
>
>/Girish
>
>



      
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