I'm not sure you can delete the device class if you still have tapes defined
to it.
But even if you can, I'm not sure it's a good idea.
If you have tapes written with the IBM drivers, and you change the drivers,
does SUN guarantee that you can still read the tapes? I don't think it will
necessarily work, even if they are both for DLT.

Now I don't know for a fact that you would have a problem, but it's
possible.

Another way to handle it is to split your tape drives into 2 groups, or 2
logical libraries.  Define a new device class with GENERICTAPE, and define
some of your tape drives to that devclass.  Then use your old
drivers/devclass for input, and your new drivers for output.

I would be interested in hearing the results when you try this!
************************************************************************
Wanda Prather
The Johns Hopkins Applied Physics Lab
443-778-8769
wanda_prather AT jhuapl DOT edu

"Intelligence has much less practical application than you'd think" -
Scott Adams/Dilbert
************************************************************************







> -----Original Message-----
> From: Christo Heuer [SMTP:christoh AT ABSA.CO DOT ZA]
> Sent: Wednesday, March 17, 1999 3:11 AM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      Re: Changing ADSM tape drivers...
>
> Hi Russell,
>
> I'm not running on Sun with a DLT ATL but one thing is for sure -
> you can not change that part of your device class parameters.
> It is not server platform specific - it works that way on all ADSM
> servers.
> What you can do, is delete the device class and re-define - just make
> sure you don't change the name - otherwise you'll have to update
> your backup copy groups and activate the policy sets that are
> linked to this device class.
>
> Regards
> Christo Heuer
> ABSA Bank
> Johannesburg
> South Africa
>
> >Hi... is there any easy way to change the drivers that ADSM uses to
> >handle tapes?
> >
> >We are having some awful problems with out DLT drives and Sun
> >Service/Support is demanding we get rid of the IBM tape drivers.
> >
> >
> >The parameter I need to change is the device *type* as in...
> >
> >    define devclass dltclass DEVTYPE=DLT format=drive ...
> >
> >to DEVTYPE=GENERICTAPE.
> >
> >Changing the device name is easy.
> >
> >
> >[If anyone else is running ADSM v3 on Sun hardware with an ALT
> >Products DLT Library, I would really like to know.]
> >
> >
> >Tx
> >Russell