In <[log in to unmask]> "James B. Byrne"
<[log in to unmask]> writes:
>
>We have a 935 as our main production machine (HP-IB) and are using a
>DDS-1 (C1151a?) type tape unit to store our backups.
>Last night our site experienced a powerfail and recovery.  Everything
>came back up and ran fine, except the backups.  Apparently the
powerfail
>recovery resets the tape drive so that the presence of a cartridge is
no
>longer recognized. You must physically cycle the loader function on
the
>drive to cause the system to recognize that media is loaded.
>
>My question are:
>
>Is there a way to have this done in software?
 
Actually, yes, and it has been done in a few programs which answers
your next question:
 
>Does a program already exist which can do this?
 
As Stan mentioned, he has contributed a utility to do so, and Jeff
hinted at there being an HP supplied utility in the MPEXL.TELESUP
group.  Also, if you have MPEX from VESOFT, it has been implemented as
a command called %DEVCONTROL.  (version 2.5)
 
>If it is possible, what are the implications of running such a
>program at the beginning of every backup job?
 
Plus side: it would always work.
 
Minus side: it would always work, even when you "forget" and leave
last-nights backup in the tape drive...
 
 
--
Tom Emerson
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