Networker

Re: [Networker] Recover/backup priority

2007-04-30 20:51:26
Subject: Re: [Networker] Recover/backup priority
From: "Werth, Dave" <dave.werth AT GARMIN DOT COM>
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Date: Mon, 30 Apr 2007 19:50:57 -0500
When I restoring with tapes that Networker could potentially think of as
candidates for writing I always flip the write lock out tab on the tape
so it is physically impossible to write to it (unless the mechanism in
the tape drive fails of course ;-)

Dave


David Werth
Garmin AT, Inc
Salem, Oregon
dave.werth<at>garmin.com

-----Original Message-----
From: EMC NetWorker discussion [mailto:NETWORKER AT LISTSERV.TEMPLE DOT EDU] 
Sent: Monday, April 30, 2007 5:35 PM
To: NETWORKER AT LISTSERV.TEMPLE DOT EDU
Subject: Re: [Networker] Recover/backup priority

On Apr 30, 2007, at 7:54 PM, Christine Cambrils wrote:

> If a NetWorker (module) recover is running and a backup (module or  
> non-module) begins, can the backup potentially write to the tapes  
> that the recover requires?  I realize that a recover has priority  
> and will run on its current device until it completes.  However,  
> what about the tapes?  Can a recover and a backup read and write to  
> the same tape? Which process gets priority, recover or backup?

Reading and writing to the same tape cannot be done simultaneously.  
The process (recover or backup) that gets the tape first will use it  
first and the other one will have to wait. In situation where you  
know a recover has to happen, its good to reserve a tape drive for  
read only if you have one to spare and mark the tapes that the  
recover needs as read only if they're not full.

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