Ist alles gut mit ADSM?

> -----Original Message-----
> From: Jennifer Davis [SMTP:jedavis AT DFW DOT NET]
> Sent: Friday, June 19, 1998 8:31 PM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      Re: Antwort: Re: Problem with DLT7000 Tape Library
> 
> Martin,
> 
> "No Drives Currently Available" has absolutely nothing to do with the
> hardware or device drivers. It means that the way the ADSM definitions
> are
> setup, that you have more physical hardware avail than you reallty do.
> 
> For example:
> 
> Do a Q DEVCLASS <tapeclassname> F=D
> --> Look at "Storage Pool Count" and note this number
> 
> Do a Q LIBRARY <libraryname> F=D
> --> Look at "Mount Limit" and note this number
> 
> Then:
> 
> "Storage Pool Count" * "Mount Limit" = # of physical drives that ADSM
> expects"
> 
> If this number is greate than the number of physical drives that you
> have,
> you will get "No Drives Available" anytime processes collide and need
> drives.
> 
> Like say you have 4 phsycial drives, the MOUNTLIMIT of the DEVCLASS =
> 4
> and 2 STGPOOLS use this same DEVCLASS.
> 
> 2 * 4 = 8 --> ADSM thinks it has 8 drives available
> 
> Then at the same time you are running:
> 
> BACKUP STGPOOL (of a tape pool) which needs an input drive and an
> output drive
> --> This takes 2.
> 
> BACKUP DB
> -->This takes 1
> 
> AUDIT VOLUME <volumename>
> --> This takes 1
> 
> Now your client backup comes along
> --> BANG! "No Drives Currently Available" is displayed becuase this
> would
> have been the 5th drive, (which ADSM thinks it can do) but you only
> have 4
> drives.
> 
> 
> Hope this helps
> 
> 
> 
> At 09:19 AM 6/19/98 +0100, you wrote:
> >Thanks Malkit,
> >
> >I had already defined the devclass with equal 4,
> >so that's exactly why I don't understand the
> >>No drive currently available< message.
> >
> >Perhaps I have a driver problem. But I don't which.
> >
> >How can I check it with the utilities lbtest / mttest.
> >I found the programs in /usr/lpp/adsmserv/bin
> >but the output is a little bit cryptic.
> >
> >Any help ?
> >
> >Martin
> >
> >--------------------------
> >Gesellschaft für Anlagen- und Reaktorsicherheit
> >(GRS mbH)
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> >
> >
> >
> >--------------------------------------------------------------
> >
> >