There is a simple solution that we have been using for many years.
On the CSL tape there is a utility called "ONLINE".  This will
return the tape to an on-line status.
 
Good luck.
 
James B. Byrne wrote:
>
> 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.  This is a
> lights-out operation and we use a little program called autorepl to set
> the tape drive to auto-answer all requests and then set it back to normal
> operation.
>
> 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?
>
> Does a program already exist which can do this?
>
> If it is possible, what are the implications of running such a program at
> the beginning of every backup job?
>
> Many thanks for your help,
> Jim