Networker

[Networker] 6.1.3 "service mode" for a tapedrive ?

2003-04-24 12:54:00
Subject: [Networker] 6.1.3 "service mode" for a tapedrive ?
From: "Ballinger, John M" <john.ballinger AT PNL DOT GOV>
To: NETWORKER AT LISTMAIL.TEMPLE DOT EDU
Date: Thu, 24 Apr 2003 09:54:00 -0700
> What causes NetWorker 6.1.3 to set a device "Enabled" config attribute to 
> "service mode".
> (It seems like every night it's setting a number of drives in our Scalar 1000 
> DLT8000 library to "service mode")
> In the past we'll occasionally see a drive automatically disabled but now 
> more drives are automatically going to "service mode".
> Will it always do this where it used to automatically set it to "disabled".
> Will it ever automatically set it to "Yes"  from service mode?
> 
> From the product announcement letter on version 6.1.3:
>       Q. Describe the new > "> service mode> ">  option for disabling a 
> device?
>       A. For NetWorker versions prior to 6.1.3, NetWorker takes immediate 
> action when you disable
>       a tape device. This can have negative results if the device is in 
> active use performing a backup
>       or recovery. To avoid this situation, users need to make their request 
> when the device is idle.
>       With version 6.1.3, NetWorker queues the > "> request to service> ">  
> the drive and automatically
>       disables the device the instant the drive becomes available. Thus if a 
> tape drive is actively
>       performing a backup or recovery, NetWorker will not disable it until 
> the save/recover operation
>       is complete. Very nice!
> 
> and from the Release Supplement for 6.1.3:
>       Service Mode Added to Enabled Device Resource (LGTpa48832)
>       The Enabled attribute in the Device Resource window has a new Service 
> mode. Prior
>       to release 6.1.3, the Enabled attribute had two modes: Yes and No.
>       Service mode is different than the Disabled attribute because the 
> nsrmmd process is
>       not stopped. No more sessions will be assigned to the device once it is 
> placed in Service
>       mode. If the device was active when switched into Service mode, the 
> current sessions
>       will complete and the volume (if in a jukebox) will be unloaded.
>       This mode takes the drive out of the pool for drives that the NetWorker 
> software is able
>       to automatically select. The drive is available for manual operations 
> specifically
>       selected using the -f option (the NetWorker Administrator program 
> already does this).
>       Note: Load/mount operations cannot be performed on devices in Service 
> mode.
> 
> thanks - John
> 
> Battelle - Pacific Northwest National Laboratory
> Richland, WA  99352
> 
> 509-430-9255  Cell
> 

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