ADSM-L

[no subject]

1998-12-18 07:50:58
From: "Sanders, David" <DSanders AT INTERNAL.MASSMUTUAL DOT COM>
Date: Fri, 18 Dec 1998 07:50:58 -0500
I tried to set maxcapacity=0 and for some reason it gets set to 600M.
Anyone know what is overriding my change?

Dave Sanders
Sr. Technical Consultant
DSanders AT massmutual DOT com
MassMutual / The Blue Chip Company
1295 State St, E060, Springfield, MA 01111
413-744-5095




> -----Original Message-----
> From: Alfonso Pichini [SMTP:apichini AT MEMOREX DOT IT]
> Sent: Friday, December 18, 1998 5:36 AM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      R:
>
> Thanks for explaining on tape capacity.
> I tried to get maxcapacity=0 and it works fine.
> Best regards
> Alfonso Pichini
> -----Messaggio originale-----
> Da: Carol Trible <trible AT VNET.IBM DOT COM>
> A: ADSM-L AT VM.MARIST DOT EDU <ADSM-L AT VM.MARIST DOT EDU>
> Data: giovedl 17 dicembre 1998 19.24
>
>
> >Subject:ADSM TAPE CAPACITY
> >
> >>>I have a question for you. I am currently using  ADSM MVS-SERVER VER.
> >>>3.1.1.3 to backup on SILOS STK. I had define into device class
> device=3490
> >>>and maxcapacity=650Mb. In this situation the command Q VOLUME seem me
> >>>maxcapacity=500Mb full. I don t undusted why.
> >>>Can You help me?
> >
> >On VM and MVS servers MAXCAPACITY is the maximum amount of data that ADSM
> will
> >put on a tape, but if the tape becomes physically full, or has certain
> errors,
> >it will be marked full before it reaches that capacity.  The capacity
> reported
> >by ADSM does not consider compression.  If client compression is used, or
> if
> >the data is not very compressible (backups of zip files, for examples)
> >then ADSM will report a full tape will a smaller capacity.  Most tape
> >manufacturers give their tape capacity assuming compression (I think
> normally
> >around 3/1), so if you are sending already compressed data, you will not
> be
> >able to reach the stated capacities.
> >
> >MAXCAPACITY, if set to other than 0 determines the maximum amount of data
> >ADSM will put to a tape, ESTCAPACITY, if MAXCAPACITY is not set, is an
> estimate
> >used for some calculations for reclamation and display, but does not
> determine
> >when a tape is full. For further information on the MAXCAPACITY and
> ESTCAPACITY
> >parameters of the DEFINE and UPDATE DEVCLASS command, see the
> Administrator's
> >Reference, or use the online help.
> >
> >Carol Trible
> >ADSM Development
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